NEEY 15A Smart Active Balancer. Makes your balance cables warm♨️... and it is smart! 

Yes, the NEEEEEEEEYY is back!

It gets it done quickly.

Thanks, Franco! Hello to beautiful Sardinia 👋

Thanks for sharing, Mike. That sounds really interesting. Good luck with your project.

Yeah, they came a long way and have finally really great products which just work out of the box. High quality PCBs and design. I really like them.

watch out for heater 18650s! more cells more problems.

Thanks a lot for your feedback.

And I had it sitting here for a while, so I thought the Frankenstein battery is the best battery to test it on.

And so quick... When I watched the footage back, I realised that it took less than 20min to balance. The rest time was 'wasted' with setting up the camera.

Oh, wow, you didn't muck around...

How about this balancer but cannot find how to download the software to my Android phone if you or anyone else could tell me that would be greatly appreciated thank you

Thank you. Yeah, really great tech they now have at NEEY Technology. There is another very exciting product coming soon...

Yeah, it seems pretty well build and working out of the box. No complaints from my (apart from having the LEDs in the wrong order from right to left😂)

I'd say this is heavily influenced by manufacturers cultures who natively read right to left....

@@OffGridGarageAustralia if i knew 100% that it works as you claim in the video I'd order one. I don't need the bother to maybe have to send it back and then lose the shipping and border fees.

Thanks a lot for your ongoing support, Max!

I bought one and Cannot find software for my phone ,a google pixel, can you help me? Thanks!

Thanks for your feedback. There is another very exciting product coming soon...

Are they Phoenix Contacts? I knew they looked familiar...

For fixed installations, you can simply use different cables and connectors and keep the original cables and connectors for other batteries.

Nice. Do a few laps on the battery race track before you install it. It drives very smooth.

bought one of these 6 months ago and still cannot find how to get software onto my phone a Google pixel if you could help that would be greatly appreciated thank you

I’d get one in a heartbeat… but the price … 😢

Yeah, as I said at the end of the video...

@@OffGridGarageAustralia I'd pay the price if i knew for sure it would do what i need it to do.

Yea, they are building great products now.

Sunny and warm up here. Had 27 again over the WE.

Unfortunately priced to match 😢

Well, the balancer will turn off at 3.4V. If all cells are under that threshold, it is turned off.

I was thinking similar, with two black cables, one for power negative & one for battery cable 1 negative.

@@evil17 Even better!

I think it usually comes with a power supply as shown in the manual.

Mine came with a black this company is listening they also need to make the positive and negative power cables much longer

Yeah, definitely a niche device for shops, battery builders and large batteries.

Thanks or your feedback. That could be in deed something for Madi's boat. But she uses the JK BMS already so it will be OK, I assume.

It did a good job!

This was my first thought when I saw the size of the balance cables, I was wondering how warm they might get with such a current. On most batteries they would probly be fine as it balances so quick, but on a battery with a dud cell that just does not want to balance, I imagine it could become an issue if left unchecked.

Well, 1.5mm is still OK for 15A. The voltage drop does not matter in this case as it measures after balancing. The cable gets hand warm, not hot.

Really? For a single battery? Was the 2A not enough?

@@OffGridGarageAustralia 2a takes a while, but the main issue was that I couldn't set a voltage to stop balancing so, so once I charged it again it would take a day to balance. 560ah is a lot!

Yeah, that will be a very easy and efficient task with the croc clamps...

Thank you very much for your support!

This NEEY is probably not designed for a single 16s 280Ah battery. But I like you thinking about a switch to connect multiple banks and it cycles them though either automatically or with a manual switch. I'm sure they are reading here... It's really good what they are showing now and sets the bar really high. Like the JK-BMS and the NEEY 4A balancer before.

The question is if one really needs to topbalance every battery every time when irl most batteries may not get charged full most of the time. Cycling would be as “easy” as a series of small relays or with some logic triggered from a 100% soc status. Even manually with sets of extra cables would not be a real problem when one plans the top balancing of the packs. I am wondering if the balance leads are really fused.. a 15A or higher short can create a lot of damage within a day.. what happens when the software fails ? The battery is not protected by the BMS, since the balancer is connected directly to the battery. So to leave any high amp balancer permanently and virtually unprotected connected directly to the cells is placing a lot of faith in the balancer and its software. At least one should program a very loud low or even high cell voltage warning. Or initiate a balancer disconnect via a relay on the BMS triggered by a lower then 2,5 of higher then 3,65 cell voltage alarm. This prevents damage from incidental software bugs or freezes.. (cpu’s often freeze at certain high temperatures). This won’t protect against fysical hardware faults or shorts. Aka, the higher the balance currents the greater the damage in case of a failure. So.. periodically planned manual top balancing may just be the way to go.

@@OffGridGarageAustralia with all the comments being filtered or blocked by youtube bots or moderators they will only see certain comments.

@@NaamNatuurlijkniet exactly. That's what he basically said. Only use it for a quick charge balance.

Not expecting they will sell many of them for this price. $300 would be more appropriate, I guess...

@@OffGridGarageAustralia the price started a over one grand and is down to five hundred already. I'd pay the five hundred if i knew it did what i need. I'm still a bit skeptic on having to lose duty and shipping if i have to send it back.

Yes, me too! Boxes are waiting in the garage for a while.

Ha, great!

I thought so. 35A it says on top...

A$ you're talking about. Yeah, demand is high for good products. I think you can still get away with a the normal 5A balancer and a voltage triggered relay to turn it on. That's well under $100 then.

Interesting that you use lead acid batteries for e-bikes over there. The balancer would be rather something for a e-bike store where they provide services for their customers and re-balance battery pack. For a single e-bike battery, it would be overkill for sure. The Daly will not balance well. They have very weak balancers of 50mA. There is nor real threshold on how much imbalance is too much. Usually, when you have a certain unbalance, the drift only gets worse over time.

The balancer would need more super caps if it balances more than one pair. Not sure if they are the expensive part of the balancer... This is what the normal capacitive balancers are doing, they balance all cells at the same time.

@@OffGridGarageAustralia the expensive part might just be the fact its not a high selling item. the price should keep going down to an affordable for all price after more sales. I hope so. Then a gamble purchase would be in favor.

It’s $331 shipped now to us.

Hahaha, good call. Still, Daly needs to do their homework first.

​​@@OffGridGarageAustraliahat about folk who aren't as lucky to have your knowledge and has 7 of the 250A Daly bms😂

@@OffGridGarageAustralia I bought a JK, because of your videos. But I could not find another reason than the balancing method not to take this bms. JK seems not to improve their bms, too. Isn't it?

@@erwa8729 Watch this space in regards to JK...

Wow what a beast Normal i put a 4a balancer on every battery Now i am thinking to put no active balancer on end if needed conect a 15a on it for 2 minutes

It could but not really necessary. Remember, the efficiency is still better than with any passive balancer.

Bottom balancing would only work if the balancer is kept working all the time. Even with 15A, it would be only working with small loads. Only one 304Ah cell at the time can be discharged into the caps and then transferred into the 280Ah cell. Because we have several 280A cells and they all need to be kept above the UVP threshold, it needs a quite long time to balance them all out. At the end, you would destroy your perfect top balancing again and have this same issue when fully charging the next time. Bottom balancing is really a bad idea, it is a bit a thing from the past when we didn't have good BMSes and balancers.

@@OffGridGarageAustralia I see what you mean… when using different capacity cells in one battery one has to balance them at every bottom and every top to keep it working. This indeed would only work on small loads.. and with multiple small and large cells this would take time. At least for the frankenstein, which is not a general setup. When using 4 batteries in series drawing 20a each one could still supply a 4kW load. General household use may not even surpass an average 1 kWh.. not talking about boilers, heatpumps, EV’s and cooking 🫣 For a small unbalance at the bottom this would be a waste.. for a huge unbalance a.k. one “bad” cell I could think of some use.. for multiple different capacity cells it would take too much time and a rebalancing at the top each time. Actually a bad idea 🫣 I have been wondering though.. What would happen when connecting a 17th virtual cell to the balancer, lets say a 15A 3,5xx Volt powersupply or a dc-dv converter effectively making a 17S battery with an always Full 17th cell. This would enable the balancer to topup any cell to the maximum selected voltage of cell #17 without the charger having to be active , so when the pack voltage has already been reached. When the source of #17 is the whole pack it would draw a little from all cells instead of one and dump it in the individual cells that need it. Some of the power (lets say 1/16th) is recycled then during each balance cycle. This would reduce the number of microcycles I guess.. since in most packs it are always the same cells that are too high (to soon) or to low. One could argue that the extra microcycles on the best and worst cells of the pack would degrade them faster… although calender aging comes first I guess. Just thinking out loud here.. I wonder if when using the whole array of batteries (lets say 4) as a source for 4x virtual battery #17 and 4 balancers would not also balance out not only the individual cells but also the individual batterypacks. The set source voltage of #17 would have to be taken into account then, just to prevent endless balance cycles creating more loss then gain by balancing. Again just analytical thinking out loud if this would be a way around balancing complete batteries without have to use 50v balancers. Thinking a bit more, this would also mean that eventually all cells in all packs will have around the same voltage, but cell #17 will still always be a bit higher. So how do we tell the balancer to stop. An other approach would be a cycling charger. So one draws from all packs at te same time, converts to a “float” charging voltage/current back to the same battery. Effectively creating conversion losses. Dc to dc would be best I guess. The balancers with just 16 cells attached would then effectively balance each cell to the virtual charger voltage drawing from the highest cells per battery but without discharging them too much since there is also a charger active… one could limit the charging current to lets say 15A or more by trial and error effectively only recyclecharging each of 4 packs with 3,x Ah.. when one balancer draws power the current to the batteries would be 0, when 2 or more would dwaw it would simply take longer to charge the balancers. When 0 balancers would draw power the 15A would simply be recycled evenly to all batteries. Doing all this… what would be the benefit of it all ? I guess the bottom (0%) soc of all the batteries may get closer together in time effectively preventing a potential high load being drawn from only one battery when the rest is turned of by the BMS, or when BMS protection is set lower it would keep the battery voltages closer together at the bottom. This makes me wonder if batteries don’t balance themselves during discharge in the lower voltage range. I would say when battery voltages are starting to differ at lower socs I guess more current will be drawn from the battery with the higher voltage. Nice story this… nice and short 😁 Have you ever tested the remaining capacity per battery after discharging the complete array to a daily safe voltage ? For people selling the whole contents of the array during peak feedin tarif time this could mean they are wearing one battery off much faster then the otherones in the array.. balancing packs may reduce wear. Wouldn’t a float charger with the whole array as a powersource not do exactly the same.. in other words, when floatcharging to lets say 3,4 Volts per cell until the current goes down to 0.. will there still be unbalance between cells after that and if not, will all cells hold approxx the same amount of power. Maybe a bit too much for the “forum” though 🫣

@@NaamNatuurlijkniet Thanks for you great comment and sharing your thoughts. The 17th cell as a power supply is a great idea at first. Once all batteries have caught up to this level, the problem begins and the balancer will pick other cells for balancing, may even over balance some slightly and will try at some stage to charge the 17th. Many of the systems and devices we're using are imperfect and if I could, I would make the 'perfect' BMS and balancer. Yes, we have done all the battery testing to determine what is the best cut-off voltage for charging and discharging. I ran the big battery tester for months to find all that out. All data has been published on my website and all videos are still here on my channel.

@@NaamNatuurlijkniet exactly. Mismatching cells never works and is not worth the effort. I bought used cells and had to group the cells accordingly. The first group i bought had a number of cells that either reached the ovp or uvp and then cut off the charge or load to protect the cells. Some reached 3.65 ovp while others were still at 2.99 or 3.30 or close. Some reached 2.50 uvp while others were still at or around 3.33v. It was like a side show bob lol. I'm still undecided about the bms in the video. If only i knew it worked as good as claimed. I have trust issues when it comes to online high priced items. Duty and return fees for an item that might not work for my needs seems like a gamble. If only a place in Canada saskathchewan would have these in stock. Or willing to order it for me payment in advance of course. The bms i have on it now works great for an overnight charge. I need a bms like in the video that claims to be able to do a quick charge.

What's the alternative though? The efficiency of the balancer is still better than any passive balancer.

@@OffGridGarageAustralia Yes this is much better then a passive balancer since they are all loss. Once the batteries are balanced losses are null. Discovered you channel a few weeks ago, helpful, interesting and love the hummer. Though in Canada, your winter cold is a nice day.

@@universeisundernoobligatio3283 Welcome to the channel and thanks for your feedback. Yeah, our winter seems like a walk in the park for many. Once you live here for 14 years, you are acclimatised and 22° feels chilly, 5° freezing 😃

Not losing valuable solar storage capacity due to imbalance should compensate for the loss causes by the balancer and it's cost in the long run if you can avoid replacing or adding expensive batteries for years to come. And it may save you a lot of time and headaches when one battery is reaching the end of it's life.

I don't think the Na+ batteries are ready yet. Lot's of issues or better disadvantages in comparison to LFP. No reason to buy sodium batteries atm.

@@OffGridGarageAustralia Hi Andy that's a shame I am looking forward to them hitting mass market and no doubt you are high on retailers lists for product reviews. Li is far from perfect as well and was a problem child, Dendrites and thermal run away for example. The energy density and cell shape limitations of Na sucks and will be no use for EVs but perfect for us. Yeah sure the cycle life is not as quite as high as LiFePO4 but so are other chemistries. There were serious Cathode failures but this seems to be engineered out. There are pro's and cons to everything, just sodium is levels of magnitude more abundant and so much easier to extract and process. You can suck it out of Sea water so less heavy dirty mining of raw materials controlled by dodgy Countries can only be a good thing. I for one am very optimistic and excited for this, LOVE SCIENCE!!! IN OTHER NEWS: Yesterday morning I had a very, very light frost on the grass! Not bad for the middle of summer in Scotland, SO MAN UP ANDY 😂😂😂. As always, love ya Gary 🏴󠁧󠁢󠁳󠁣󠁴󠁿

I’d have thought a PAIR of 2.7v@600F would give 5.4v@600F?? Have I got that wrong? (It’s a very looong time since I studied this stuff.)

You're right, Dave. Two 2.7V/600F in series will give you 5.4V/600F. It's like series connecting batteries. I thought they are all on parallel to enable charging from single cells directly.

@@OffGridGarageAustralia 👍 Thanks Andy, I was worried that I was going senile LOL :-)

@@OffGridGarageAustralia Unfortunately they don't add up like batteries. @universe is right. Two 600F capacitors in series will give you only 300F but double the voltage (5.4V).

@@danielardelian2 yes, my apologies. Series connecting capacitors do NOT double the capacity. Caps behave the opposite to resistors when in series and parallel. They are probably all in parallel then, to increase capacity.

Really? I downloaded and installed it. Pretty straight forward, I thought...

Having trouble as well. How did you get it done?

@@roostaman3046 You download the apk file and install it on your mobile. What trouble do you have?

Near the bottom of the page I found a link that actually worked@@roostaman3046

@@OffGridGarageAustralia It turns out that my phone was rejecting the app for security reasons. Got it now. The 15a balancer is making top balancing the 16s banks a dream.

Certainly overkill for most installation and it's more for maintenance or if you build a lot of batteries.

@@OffGridGarageAustralia Thanks Andy 👍

What would that do?

i have a 24 volt battery ,16 cells 280 a/h , 2 x 8 cells in parallel 560 a/h , do i need 2x neeeeeeys?

@@rmichaellinden6789 do you have 8 cells in series and another 8 cells in series? (a BMS and NEEY is needed for each battery bank) Or 2 cells in parallel and then 8 of these duos in series? (only one BMS and one NEEY is necessary)

i have 8 cells in series and eight cells in series , one batrium bms , it has a setting for two x eight in series on one bms regards michael

The efficiency is better than with any passive balancer which would be the alternative to an active balancer. Yeah, I measured as well around 60-70% with the smaller NEEY.

Thank you. The app can be downloaded from my website in the 4A NEEY section: off-grid-garage.com/battery-management-systems-bms/

Thanks a lot Peter. I thought the same, this would make a great BMS if added with the right features. So, watch this space...

Said it at the end of the video 😉

That totally depends on your battery and system design. What's the best car, the best computer, the best shoe? What fits me, may not fit others...

You haven't got any PC connection or BT connection to the BMS? It's fixed set up?

@@OffGridGarageAustralia PC connection has not worked until now. The next attempt will be at the weekend (No. 1232, it seems to me...). I have been using the LifePo battery as a lead-acid battery for over a year. My inverter is from Solax and it can do that quite well. But without BMS communication it's not that easy. It's a 384VDC and 105Ah battery. Originally the battery was supposed to work with the inverter, but Solax changed the CAN protocol (without me and the battery manufacturer knowing). Now the hybrid high voltage Solax only work with the original Solax battery. I will report back when I find a solution.

You can buy the cables separately from the Hankzor store on AliExpress. If you cannot find them, contact them so they can send you the link. Have a look under the NEEY balancer, there is the link to their store. off-grid-garage.com/battery-management-systems-bms/

I'll confirm that again.

You can cascade the inductive active balancers as well as the NEEY balancers. You basically buy two and overlap them. There is info and diagrams on the Hankzor website. The link is on my website: off-grid-garage.com/battery-management-systems-bms/