Wirelessly charging 18650 batteries!

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This battery issue has confused me more than helped me. Would have expected the cells that were only positive was connected to NOT be charged or have any power yet they did even tho I can't see anywhere that the negative was connected..
[ Part 1 ] You're here, and hopefully enjoyed it enough to continue down the list?
[ Part 2 ] Finding out the battery build isn't legal | • Pt.2 Finding out my ma...
[ Part 3 ] Addressing safety | • Pt.3 Making this MONST...
[ Part 4 ] If you're already watching this you won't need this!
[ Part 5 ] In this episode I finally get the battery completed and ready for service, also incorporated my 100,000th subscriber video! | • Monster DIY Offgrid Ba...
[ Part 6 ] Final capacity test and guess what PART ONE thumbnail was SPOT on! | • DIY Lithium-ion Batter...
[ Part 7 ] Its installed & working 100% off grid - check it out here - • Clean DIY Offgrid inst...
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Pete
#diypowerwalls #hbpowerwall #18650ed #diypowerwall

Опубликовано:

14 мар 2021

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Комментарии : 348

@rgreerjr 3 года назад

Rename the video to "Wirelessly charging 18650 batteries?" But in all seriousness, if you find out what was the cause of this I think it would be interesting to see.

@HBPowerwall 3 года назад

FIFTY likes on this comment and you got a deal lol

@DenfordBerriman 3 года назад

@@HBPowerwall surely it's inductive if they aren't physically connected? Maybe 3D print some blanks to fill the voids

@HBPowerwall 3 года назад

I think I need to build another battery and try to replicate it

@jimmyb1451 3 года назад

lol.... "Free energy" Then there'd just be a bunch of EVEN weirder people join the group! :)

@HBPowerwall 3 года назад

Just what we need a bunch of crazies ! 😬

@kirkoliver2878 3 года назад

I’d be suspicious that the leaker that rusted through has made a connection to the negative of the adjacent cell. Also, try using a lower input impedance meter or across a 10K ohm resistor, because the DMM you are using has 10Meg ohm input resistance and is high enough to give readings through the corrosion, as a path. Good luck Mate!

@clintoncoker6 3 года назад

Yup, easiest way to check if a cell is actually connected or not is to use the continuity checker on your DMM... That's specifically what it's for. I agree, I think the insulation has corrodes through and that zero volt cell has been shorting the pack.

@GarethJones-dk9yp 3 года назад

I agree with this comment. That electrolyte has leaked and made a connection to the Pack. I bet the IR is very high in that rusty cell that's why your not seeing any volts. You could prove this with a low ohm meter/impedance tester. Interesting one!

@sagegeas9205 3 года назад

I was just watching one of the prior videos about this cell he put together. During his whole sorting and placing and flipping and placing again, there was one cell that had rust on it. I wonder if it's the culprit.

@SirVivor1987 2 года назад

At the positive you conected it to the main lead and the leaking rust from the broken cell made the connection to the adjacent cell. That is under guarantee the issue. The really best way to find such an isolation issue is an isolation tester. testing with 200V from the rusty side of the blind cell to the negative zink plate for sure is very low impedance due to all the nasty liguids. Definately 3D printed blinds had been the better choice.

@Knight8365 3 года назад

Yeah like others have said; replace those 3 'unconnected' cells with non-conducting supports, such as PVC pipe.

@ryand3581 2 года назад

@HBPowerwall A couple of suggestions improve your battery layout/setup. #1 For "insulation cells" you should use non-conductive blanks, not dead batteries. #2 Remove fuses from both sides and just have the fuses on the negative side #3 Reorient your batteries so the negative sides of the batteries all face outwards because it allows you to do an extra check much faster, which would be to use your infrared camera to check all batteries at the same time. #4 Add an insulative on both the negative and positive side of the battery, even if it's a heat resistant plastic layer. (In reality every bank should be fully enclosed and already in it's open separate container.) #5 Insulate some metal "fins" (dividers) between each battery bank so if one bank was to set on fire the the bank next to it would be shielded from the majority of the heat/fire and makes the whole setup safer. #6 Get some insulation around each power line that joins each bank together.

@HBPowerwall 2 года назад

That info will be very helpful for other builders trying to learn - thank-you

@peterhancox5268 3 года назад

For the three cells that are part of your mounting system, replace with 18mm timber dowel from your favorite timber merchant, well that’s what I do anyway.

@HBPowerwall 3 года назад

Sounds like a good plan!

@kevinmills5293 3 года назад

And if those dowels charge up to 4.2v????lol

@BenMitro 3 года назад

What Ah capacity should the dowel be?

@kevinmills5293 3 года назад

@@BenMitro Well, the chemistry of the dowel limits the capacity to 0.2 of FA!

@BenMitro 3 года назад

@@kevinmills5293 If you impregnate with graphite?

@williambuehler2784 3 года назад

Is there any leaking electrolyte that could has dried and caused a bridge to form a connection?

@HBPowerwall 3 года назад

that would be top of my list!

@izemanevobike 3 года назад

@@HBPowerwall Only plausible explanation. Maybe better replace those dead cells by 3d printed inserts or such to be extra sure. But you've chosen LiFePo4 as your next gen chemistry (which I highly recommend as well), so there may not be any further development going into those 18650 packs anyhow?!

@smartazz 3 года назад

I thought the same

@edwardvanhazendonk 3 года назад

Great to see you back, I was a bit worried you weren't ok, glad you proofed wrong! I think there is some kind of cell damage or touching negatives. Good luck in finding this one, the rust is telling something here.

@fabianio26 3 года назад

You're back! Glad to see u again

@HBPowerwall 3 года назад

Hey, thanks!

@CollinBaillie 2 года назад

@@HBPowerwall Time for an update?

@HBPowerwall 2 года назад

Next video, have not done anything to it yet lol 😂

@Thouston 3 года назад

It actually is almost certainly charging wirelessly! The air between the battery and the bus is likely turning into the dielectric of a capacitor with the bus and the battery acting as the plates of a capacitor. The voltage isn't high enough to jump the gap and cause an arc, but there are a TON of amps available and the electrons are still attracted to the other side, even though there isn't a direct path there... And so since there isn't a high enough voltage for the electrons to arc through the air, instead the electrons all just cram together tightly in the plate trying to get as close as they can to the other plate, allowing more electrons to flow into/out of the disconnected batteries... So, this won't continuously charge the battery, as the air capacitor can only get so much charge until it becomes saturated until the polarity changes when it switches between charging and discharging. But it's enough to allow a decent enough flow into/out of the battery each charge/discharge cycle, but nowhere near enough to properly charge it, thus eventually causing the damage seen. I hope this helps!

@robertcarter8646 2 года назад

I agree with you on this I know I'm late to the game but this is what is happening to him. I thought the same when I seen the damage that was done to the housing of the batteries. Good joob

@AQUATICSLIVE 3 года назад

Interesting video as always. My guess is that the case is shorted out, but waiting to see what you find.

@eliasshedd 2 года назад

Love the humility. This stuff can sometimes be a real head scratcher.

@HBPowerwall 2 года назад

All hear to learn - well most of us

@tylerkern9685 3 года назад

Good to see you again

@cameraman2505 3 года назад

Electrolyte may drip and create shorts. Perhaps stacking 7 or 14p in server like closets is a safer way to go. Gravity has its pros and cons. Anyways, glad to see you back on YT. Thanks for the content. Hope your Mini has hit the road!

@chuxxsss 3 года назад

Peter check the resistance of wire near the died cell mate please. Had a problem with an antenna system in the military something like that was corrosion in the wire. Long shot. Need to talk to someone just offered 80p packs, but dead think been sitting at the guys house for some years? Is it worth taking?

@offgridmaryland 3 года назад

I have the same fan issue with my Icharger X8 , those fans do not last hardly at all .. and its my favorite charging device .. Good luck figuring out the issue ! id like to see how the pack reacts after you take out those bad cells .

@MrConspark 3 года назад

Welcome back! Good to see you. I see the problem, the faulty cells were from the dreaded vanon batteries 🥴🤣 But seriously dis-similar metals corrosion? Great video, cheers

@customraspi 3 года назад

the rusty cell just shorted and this explains the voltages you measured.

@clintoncoker6 3 года назад

You need to use the continuity checker (or resistance measurement) on your DMM to check for connection of the negative of those cells to the pack. After all, that's specifically the function of a continuity test...

@DenfordBerriman 3 года назад

Love the iso tip!

@AhmedAdly11 2 года назад

Brilliant! Lovely to see such a puzzle

@HBPowerwall 2 года назад

Thank you! Cheers!

@AhmedAdly11 2 года назад

@@HBPowerwall But more importantly; did you solve the mystery?

@ianmac5215 3 года назад

certainly a hair puller to which I do not have an answer. As to securing the bus bars, I drill out the holes in the cell holders and use 250mm x 2.5mm cable ties. Works really well and is pretty strong.

@GrossGeneralization 3 года назад

Agree with your conclusion that the negatives must be connected somehow. Possible ideas from watching video: 1) The charger negative sense lead was touching one of the "dodgy cells" (could only see that it was in the general area during video, not the exact connection point). 2) The wall mount is shorting the negative sides somehow (esp. relevant if sat in the mount off camera at some point.) 3) Cells were negative side down on a possibly conductive shelf during charging. I'd suggest continuity testing between pack and cell negatives with the pack in a few orientations to see if it changes anything, as well as while sitting in the wall mount, just to eliminate unexpected mechanical deformation as a possible cause.

@frankz1125 3 года назад

An idea for the cells that touch the mount is use a piece of round bar. AL or steel or even pvc . Something similar size.

@twcstransam 3 года назад

Interesting Pete, I had a single 18650 laying on its side on a wood table, it leaked out some nasty brown ooze similar to what you saw on those 0v cells, it was a 0v cell in my case too

@pulesjet 3 года назад

In the olden days we used Freeze Spray. Canned Air works fine if you hold the can upside down.

@HBPowerwall 3 года назад

I used that before the FLIR was affordable. But it was an ongoing expense.

@etv4075 3 года назад

Welcome back pete..

@HBPowerwall 3 года назад

Thanks bud

@ThePhoenixAscendant 3 года назад

Have you considered using dummy plugs are of Delran or another nonconductive material instead of the dead batteries?

@jimmyb1451 3 года назад

I would hazard a guess that the meter's input impedance is so high that you're getting false readings. Before you do anything, I would make a voltage measurement of each of the three cells, but with a 100 ohm resistor across them for a load. Then I would do a continuity test between the negative ends and the nickle strip. Might give you some answers?

@BrechtVanRoy 3 года назад

have you tried the continuity mode of your multimeter from e.g. negative busbar to the 'disconnected' side of the batteries? that should give a clear indication. If that beeps, it's for sure a connection, right?

@AlexandreLollini 3 года назад

It would be interesting to confirm faulty or heating cell by measuring its internal resistance IR. I reject cells that are above 80mΩ but for concistency I measure IR only between 4.0 and 4.10 V. Usually charged IR tend to increase with cycle life, but this is very variable from cell to cell and from brands to brands. I have a really good bunch of cells that are very old and very cycled but still show good characteristics. (if I accept the capacity loss as it is and use them knowingly)

@grantweldon3751 3 года назад

I'm thinking that a shard of dissimilar metal fell in behind the pack once it was installed to create a contact but it too has rusted an now is unable to be found. Could you have drilled a hole in the cabinet creating metal filings maybe? Love your honesty, cheers

@transmotion23 3 года назад

The only partial explanation is that (as a meter works) its measuring the difference between the two points, the weird part is how it got charged to begin with, which I would (maybe) attribute that to inductive behavior. I would add a insulation barrier between those battery leads, and your copper wire.

@dtec30 3 года назад

Would connecting up one of those clear shrink wrapped battery monitors have helped the ones that beep at you?

@offgridwithpojectham 3 года назад

Hey Pete, Have you thought about the possibility of when the soldering of the bus bars was done that some of the liquid solder ran through the battery shrink wrapped cell and one of the positives might be making contact with the negatively charged battery shaft? This might be how the voltage is being transferred and draining the cell but possibly not enough to spark and only showing up at low capacity?

@HBPowerwall 3 года назад

I don't think so but possible I guess.

@DIYwithBatteries 3 года назад

After a long..... Time Sir :D

@gordonbrown2204 3 года назад

Creepage Current would be my guess. Even though there is no direct connection current can still leak into (and out of) the cells. Because of how close they are to the bus.

@dianabringiton 2 года назад

I was watching a vid about how electricity flows and creates a magnetic field and how the batteries radiate electricity

@paulbarrette2557 3 года назад

Could the pressure of the weight exerted by the pack on those 0v cels be a cause (not the only but 1 of the causes) of the leakage?

@mikeadams4591 3 года назад

Nice LTT T-Shirt :)

@oldtimeengineer26 3 года назад

I wonder if the corrosion of the one cell has arced over to the inner cell connecting the grounds

@Island.dweller 3 года назад

First, I have no clue, but I'm curious if voltage creep (magnetic principle similar to wireless charging)???? Very interesting I'm just getting ready to assemble my first wall. Something new to think about. Great video

@Joseph-vv6nf 3 года назад

Why not replace those leaking cells with wooden dowels instead so that theres no chance of them ever shorting anything

@DaRockCRX 3 года назад

or 3D printed dummies

@Joseph-vv6nf 3 года назад

@@DaRockCRX or that

@joaoncr 3 года назад

Some notebook batteries come with a fake battery to fill up the gap. Those could be used.

@davidrknowles9792 3 года назад

I thought nylon rod might work well on mine, mine are in action 6 months and so far I don't see any of this

@swaleedkhalid 3 года назад

thats what i thought in previous video that he could add a dummy cell there instead of using actual cell. as the load of battery is nearly 10kgs and thats the cell which was at upper side so there's huge chance that liquid came out of battery and drip downwards and created path.

@MandrakeDCR 2 года назад

The rusted battery has a short and has enough corrosion to allow inductive current throughput. Before you took off the strips, it allowed all three to charge, and it could only hold a partial because of the damaged lower. You took off the strips, the rusted cell never held a charge in the lower, it simply allowed pass-through current. It's nothing more than a blank rod at the hole. Especially with the open end you punched through it, it is a wound coil of material inside of it that is an actually a pretty good inductor. So, all said and done, they are all inductors to a degree, you have a massive twisted copper loop on top of all of them as opposed to a typical flat stack. It is basic induction. All you need to do to test this, is line up 6 batteries separated by a battery width between them, and connect them accordingly. Then take that same twisted copper wire, run a normal loop of it over the top, but do not connect it to any but the last one to complete the circuit. Do a full charge and see what happens. *Make sure the wire is extremely close like it was to those three*. The induction should work without issue. That's why it worked. Just look at your camera's heat map. The wire is radiating heat. That's not all heat. There's a buttload of electrons flying off that thing :) Later!

@offtherockcycles 5 месяцев назад

So is it possible to measure the voltage of one cell even though they are all connected in parallel? I suppose an IR test is the best way and the infrared camera? is it possible for the cells to rust on the inside too? so basically if there is a bit of surface rust time to just decommission the cell?

@jeremy87turbo87 3 года назад

Serious question I am ready to buy the patriam I have the same type of set up as you do with the 18 6 50 100 P packs I am only doing 7S right now until I get more batteries and I also have the multiplus victron 3000/24 V and the 150 - 35 control charger... I just want to make sure I make the proper right purchase in the best pursuits the WM5 would be the one that I want correct with the long mobs???

@NorroTaku 3 года назад

nice LTT shirt ^^

@wloulittle 3 года назад

Hi. The mystery is how hot did your bus wire get when it was close to the 3rd cell in. The fact that you can measure your full battery voltage from the minus side of that battery to the plus buss lead says that that battery is connected to the can of the battery otherwise known as the outside of the battery. If you were to bend the bus wire towards the center of the body of the battery just enough to clear the possible contact point. It looks like you could put some barley paper underneath the areas of the blue batteries and you would not have any more problems with those three batteries. You can use some 5-minute epoxy where you did have the straps before to add a little bit of rigidity to the bus wire.

@BenMitro 3 года назад

Like smashed, subbed ages ago. That is effen weird behaviour of those cells. Maybe they have evolved to absorb energy from nearby cells, or perhaps they are collecting and storing zero point energy?

@SidneyCritic 3 года назад

Liquid spills can make invisible shorts. I had a PCB with a 30 ohm short to GND, and only after washing the PCB with soap did it clear. FeedbackLoop just put out a vid yesterday with the same thing. I would 3D print a dummy 18560 with a screw boss on the end to replace the others.

@SidneyCritic 3 года назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-385Vt0iOwXA.html

@milanmarkovic1500 3 года назад

What if they don't need to be connected to the negative in order to charge? In order to create voltage you just need a difference in electric potential which is maybe created when the outflow of electrons from the positive pole happens (when charging)

@DMPB-fi2ir 2 года назад

those tabs on the " zero cells " you had spot welded and you cut off , it sounds like they were allowing those batteries to ground to the frame and pulling down your charge. go back and check the powder coat area on the mount to see if a bad spot it sounds like the blistering in the shrink wrap you could see and the spot welded like you were pushing a surface charge through the material to earth via the mount system. i work for a company and we used exclusively powder coat on enclosure and had to be careful because not all powder coats are electrically neutral they will flow a surface charge of electrical current . also check the physical surface of the powder coat to see it it allows microamp reading some powder coast will allow emi/rfi conductive grounding

@FutureChaosTV 2 года назад

Isn't it recommended to store LI-ION batteries at some capacity because otherwise crystals form and damage the structural integrity of the battery? Also, might high humidity have led to the cells terminals to short to the copper wire/metal sheet or the copper has "bled" some copper filaments to thin to see?

@HBPowerwall 2 года назад

they are stored in a very hot workshop and most of the time they are charged to 3.7v infact i checked them last weekend and they are all between 3.6-.3.7v and I havn't touched them since this video..

@kentharris7427 3 года назад

I would add a data acquisition module to test the batteries, that way it is measuring the voltage in real time and if there is a problem it will notify you. Also a smart smoke detector as well. After all if you don't schedule the maintenance properly, the battery pack will schedule it for you.

@HBPowerwall 3 года назад

That has been sitting in a box for the past 12 months. Lost passion for the project once the laws changed.

@ThanosSustainable 3 года назад

When searching for heaters using an IR camera, we check on the NEGATIVE side of the cells. That’s where most of the heat will go.

@jimsvideos7201 Год назад

For your IR camera, putting vinyl tape or spray paint or candle soot on the nickel will give you an accurate reading.

@HBPowerwall Год назад

Yeh that really helps but madness to do to all of my batteries, I do it with electronic repairs

@jamess1787 3 года назад

An RF engineer once told me the acronym: pfm. Pure friggin' magic. Just use the appropriate F where applicable.

@HBPowerwall 3 года назад

F yeh!

@clobysavage2385 3 года назад

Wonder if the rust is causing electrolysis deeper in the cell, could then be passing voltage thru the plasma in the exposed cases

@HBPowerwall 3 года назад

I'll accept anything as subjections at this point

@niktak1114 3 года назад

How is this pack balanced? Even if all the cells are from the same batch, there will be slight differences in capacity. 6 months is easily enough time to lead to a significant imbalance between cell groups if the balance current is too low.

@HBPowerwall 3 года назад

The battery hasn't been commissioned - its been sitting idol

@kennethalmond8922 3 года назад

Excellent video - thank you! Yea, its the weird events that make life so interesting - you can pull you're hair out and then when you eventually figure it out you go - wow :)

@Willalvers 3 года назад

i would put some sort of padding between the bracket and batteries...should help

@Bludduck 3 года назад

I think you should just rebuild the whole battery pack that way you can test each cell separately and make sure it's fixed correctly. Please make more videos long time no see!

@tootalldan5702 3 года назад

All batteries have internal resistance which should be matched for parallel sets like yours. I suspect the brand has enough difference to case those batteries to form small current flows between the parallel circuits. I suspect the age degradation may also influence the problem over time. The only method i know is to measure on a single cell the current flow of a known resistor to calculate the internal resistance. We had meters to check cell resistance for srries battery as PM quarterly check.

@angrybirds2472 Год назад

bulging cell tripped the safety on the cell but was causing negative connection to the next of the pack?

@kiwiscanwifi 3 года назад

Please run a contunity check. I would expect a connection to be found. May take some jigging to find it. The test position is different to mounted position.

@HBPowerwall 3 года назад

I'll do that for sure. I'll take all the feed back here & make it into the next video about it...

@typxxilps 3 года назад

Considering that this pack got the same power x current the Energy must have disappeared in chemical reactions or and heat. We also do not know what cells else could suffer from leakage cause the Kathode and Anode at covered. Mystery hunt is pretty demanding but I guess that replacing the 3 batteries with pieces of a broomstick of 18 mm Diameter cause those are strong and you can screw screw into those Sticks to fix the terminals even better.

@your_utube 2 года назад

Maybe the mystery cell's insulation is not good anymore and it is touching something somewhere so that measuring its one side against the busbar shows a voltage because the other side of the cell is actually touching the busbar on the opposite side somehow.

@korishan 3 года назад

Leaking Electrolyte can still conduct "voltage", just not much current. That rusted/corroded cell is a Self-discharger, bringing the whole pack down. Apparently it leaked electrolyte at some point making contact with the negative side of the pack. It would be like take a very small resistor and connecting it to the bus rails. Not enough to generate heat, but enough that given time will have detrimental effects. I had the same problem with some aviation lead acid cells where I was getting weird voltages. They had leaked electrolyte and was throwing off my readings. Cleaned up the cells and didn't have an issue

@korishan 3 года назад

What you could do Pete, is to douse that end of the pack in alcohol. Get as much of the electrolyte cleaned off as possible. This will at least test the theory of electrolyte leakage making conduction. Would hurt to take some baking powder and put on it too. Baking soda neutralizes the acid making it inert, no longer conducting.

@clint965 3 года назад

is the capacity of this pack the same as the others? if not maybe some CID s popped and some cells are cut off

@HBPowerwall 3 года назад

haven't tested capacity as have another epic video to do that dropped in my lap - defiantly will take comments and make video as much of the troubleshooting as I can

@zenzen9131 3 года назад

Perhaps when you pull the cells you will find a split in the plastic covering so that the negative body of the cell is shorting on something ?

@HBPowerwall 3 года назад

I'm hoping it is something as simple as that..

@yartst4695 3 года назад

Your construction has fuses, which help you to find out damaged cell. I think, you should measure the voltage drops on each fuses (without any external currents, charging or discharging). The cell with maximum voltage drop on fuse is a damaged cell.

@HBPowerwall 3 года назад

Need a very accurate multimeter and a jig to hold the electrodes to the battery consistently.

@seren8ty 3 года назад

Arcing, potentially. X6 should be off top of battery, may be a tad cooler.

@HBPowerwall 3 года назад

I'd expect to see little burn marks?

@blissbouwerij4033 2 года назад

How about dropping some 18mm x 65mm wooden/plastic dowels in those holes in future packs, just to avoid leaking

@HBPowerwall 2 года назад

future... there ain't no future lol, I don't have the desire to ever do this twice lol

@AllAroundTube50 2 года назад

Hi, Is there a way to add a schedule feature so that we can select when the batteries turn on, when they charge, etc.? I would like my 18650 setup to turn on between 4pm and 9pm (peak power usage) but then turn off and not charge until the sun is up and is able to charge the batteries from solar. My inverter does not have the ability to schedule. Is this function only available in certain inverters? Is there any other way around it? It makes no sense to allow the inverter to charge the batteries whenever the battery gets low because if the sun isn't up, I'm basically paying to charge the batteries (defeats the purpose of a powerwall).

@HBPowerwall 2 года назад

I think DIYTECH & Repairs has done something like this with a Pi & grafana - all above my head tho..

@raoulwoodruffbecker1518 2 года назад

Should have tested continuity and I bet that you find a connection (might have I high resistance) between the cell on the negative side and when you linked the the positive on the bus you now have a discharge circuit.

@ayyadew 3 года назад

U can test it by using multimeter in continuity mode

@iamcinnaminroll 2 года назад

you need to use kapton tape once your battery is assembled. It provides electrical isolation and withstands high temperatures. You will have fans at the base so heat due to being enclosed in tape should not be an issue. your bms (having temperature sensors between each black block) should also ring an alarm if batteries become overheated.

@HBPowerwall 2 года назад

Kapton tape is a layer of safety as well as another layer to safety... i need easy access to cells to maintain and visually inspect. I believe my approach is the lesser of the two evils.

@barthanes1 3 года назад

I would replace the filler cells with anything insulative that's not a battery.

@jeremy87turbo87 3 года назад

Somehow when it leaked the battery that is magically connected but isn't maybe the electrolytes that have leaked out have made a trail of liquid to make a connection possibly because liquid can carry current

@ardenking3481 3 года назад

Best guess is that the fluid from the leaking cell has created a channel for electrons to flow through

@HBPowerwall 3 года назад

Yep, some how that has happened for sure..

@trevorpearce6902 3 года назад

you have the live attached giving one connection the casing of these cells is neg and you have the unit which is sitting in a metal bracket contacting the neg of the attached cells to the unattached cells, they are insulated but it is very thin insulation and the entire unit is extremely heavy.

@HBPowerwall 3 года назад

but it wasn't touching the metal housing at the time of testing? BUT i like your thinking, might do an earth test

@Dutch_off_grid_homesteading 2 года назад

heya well that does me believe in faritales it's not connected but still it's connected ????

@andrewmcallister4151 2 года назад

at 8:44 that is a XT60 plug, not Anderson. I use them DAILY on my RC car batteries. they are good to 60 amps current.

@HBPowerwall 2 года назад

Thanks for the info

@spokehedz 3 года назад

I'm going to say that there is some electrolyte making a teeny tiny little short somewhere... Pull the cells either way, but man that is a headscratcher. You could 3D print some blank cells if you don't want to use real batteries. Faster than finding a wooden stick that fits. XD

@korishan 3 года назад

Agreed. Leaking electrolyte can still conduct voltage and extremely low current. Cumulative over time can be detrimental.

@doubledeckerbus-foundation 3 года назад

@16:15 Try the 'MUTE BUTTON' ;-) or replace the 3 dummy batteries with wooden or plastic ones. That must rule out the leaking

@westking7746 2 года назад

On the reflection off of shiny things changing the image of your thermal camera, why not rig up a switch to shut off one light left on, and then stand front of the battery pack that you want to observe, switch off the light, and observe the battery pack in the dark?

@grossadam 2 года назад

Maybe the problem is from when you soldered… maybe solder got down in between the dummy cells and the live cells and fixed them. Just a thought.

@HBPowerwall 2 года назад

it's possible, it hasn't happened again so for that I'm grateful

@aldomansueto2739 3 года назад

Hi, just watching your video and it's not odd. Here in Canada when we winterizie our cars for the cold winters, one important item we do is clean the top of the battery so as to not have a battery drain across the connections due to the plastic of the battery absorbing humidty and dirt and slowly draining the battery. By connecting your tabs to hold your cable you actually started the procces of charging your inactive cells, reverse process for us drainning the battery in winter. Also can you test the voltage from the cell to the plastic case holding the cells, I would not be supprised that they conduct voltage now. Seen issues with plastic conducting low voltages found with a DMM causing weird car issues in automoble computers. This could be the odd issue you are having.

@HBPowerwall 3 года назад

Never considered the plastic might be at fault. Will defiantly include that in the follow up video

@aldomansueto2739 3 года назад

@@HBPowerwall Yes looking forward to it.

@freibuis 2 года назад

I know this is a little late.. I put the part 1 into slow mo and noticed the blue battery is contacting the bus bar when weight is applied... bsically it pushing hte battery to contact. I personally wouldnt use a battery there if it is for support.I would make a rail to slide the battery pack onto to evenly distrobute the weight accross the bottom of the vertical pack considering this was 10 months ago.. probally to late and I am stil late to the pary ;)

@imprezaaudi 3 года назад

battery leakage has created a link to the other terminals. I bet if you removed the cells you might see more leakage. Cant you put blank plastic rods in place where the holders touch?

@JJ21lives4ever 3 года назад

The leaking and conductive electrolyte is your bridge. All neighboring cells for two or three rows need to be cleaned, and recased

@smitcher 2 года назад

If it's not some weird inductive or capacitive coupling between the cells then its entirely possible that during your grinding a tiny flake of iron got between the non connected cell and the fully connected cell. You had the +ve spot welded to the battery positive and the whole barrel of the non-connected cell is at -ve potential so any flake of iron between those cells and the connected cells would have forced a dud cell in parallel. Also, the one that rusted could have swelled ever so slightly pushing a flake of iron through the plastic into the adjacent cell... You'd probably be better off having some dummy batteries made with same diameter as the 18650 and use them as the support 'cells' and then you dont have any possibiility of a dud cell ending up in circuit...

@HBPowerwall 2 года назад

didn't even consider it might have been a stray bit of solder/iron/nickel.. that's a great line of thought..

@brycejeannotte7699 3 года назад

Try using an analog meter...if you have one.

@RollingThunder85 3 года назад

Your support bar was barely touching the positive and ground or the fluid that leaked fro the battery is causing a short or maybe the ink on the heat shrinks causing it similar to if you draw a line on a car battery it will short it out

@HBPowerwall 3 года назад

that is the most likely cause I'm thinking..

@maartenvanachte2512 3 года назад

I would guess they behave like a capacitor. The outside of the batteries is big conducting plate and it is close to the other negative plates of the surrounding batteries. By connecting the positive of the battery I could be possible that it starts behaving like a capacitor. Try to make the setup smaller. One empty battery with only the positive post connected surrounded by 3 batteries that are fully connected. Let it run trough a couple of cycles and check the voltage on the 'empty' battery.

@chuxxsss 3 года назад

I just did Peter, knocking the cells out will confuse you more honestly.

@HBPowerwall 3 года назад

Must be done!

@johannesdesloper8434 2 года назад

3rd purple cell from above has a connection to negative on the casing. That one is eating the power.

@HBPowerwall 2 года назад

would seem so

@johannesdesloper8434 2 года назад

@@HBPowerwall I seen a couple of your videos on your big batteries, I wouldn't agree with all your practices but really like your project in itself especially recycling the cells. More in the spirit of free energy. I studied the recycling part of this technology also a bit and estimate it's worse than using lead acid batteries. I think placing this instalation in a "special building" on your property is an excelent choice in my opinion. And bees ..yes they are great. Sowed in rubber bands in the bottom of your beesuit can help a lot to keep em out. Rearing queens from pedigree queens can also help a lot to keep the hobby fun especially with buckfast bees. My expierience is you should not go further than F2's. Grafting larvae and feeding them in queenless hives is a great skill to have.

@CossieCan1 3 года назад

I'm with the crowd. Case to case of cells somewhere somehow. Watch your swarfs 13:43 fingernail size and shaped swarf on your snippers then jumps in to positive of cell at about 13:49....

@davestech6357 3 года назад

Clean shave and all, wow. You need to get a Keithley meter or a HP meter that has 6 digits past the decimal. You would be able to spot a drainer easily. You could even use a VU meter with a voltage divider too.

@HBPowerwall 3 года назад

Didn't even know that was a thing!

@johnolsen7073 2 года назад

Too bad you can't channel Mr. Tesla! Hope you find it!

@HBPowerwall 2 года назад

issue has been sorted

@RaithUK 3 года назад

Hmm mystery time.. so you connect one side and then have high amp running through the bus-bar on the other side within mm's of the bats.. inductive charging would be the first thought.. the rusted cell seems to have a popped CID so i would guess that the cell's were being inductively charged and a drop of water (probably condensation from the cabinet) dripped on it while inducting, forming accelerated oxidisation and sent that cell into thermal runaway but only just.. so it melted the sleeve to a neighbouring cell reconnecting the inductive loop on that cell once more.. hence slow discharge over 6 months while in storage lol I love mystery's.. can't wait to see how much of my waffle was wrong. lol

@davidrknowles9792 3 года назад

I put plastic caps on my zero volt support cells but now I'm thinking about using nylon rod in replacement

@HBPowerwall 3 года назад

I think that is a good idea