Wiring Tesla Battery modules Active Balancer 

Brother if you take a small flat head you can push and pull at the same time and tho's wires will come out. Then you do not need all them wires and no need to cut. If you need you can reuse them..

Just wondering: could you not have used one balancer per 2 Tesla modules (so 12s) instead of one balancer per module (6s). Means half as many balancers required? Or am I missing something (only at the design stage of my future large system so I could be wrong) Cheers :)

I was just poking around how to treat these batteries and learned that although you want to keep them in the mid-range state-of-charge especially staying away from the higher percentages for longevity it is still recommended to occasionally bring them to 100% or 0% so the BMS can more accurately balance the cells. The reason is stated as this: With LFP batteries it is only practicable to balance at an SOC close to 100% or close to 0% SOC because this is the only time the individual cell voltages are far enough apart from each other for a BMS to accurately measure the difference in SOC. Which would explain why bottom balancing is better than top. That way higher-capacity cells are kept at a lower state of charge. Otherwise they would needlessly be at a higher state of charge where they would degrade faster.

What a mess of wires... good info good video :)

Hi modern offgrid diy, nice video and a lot of kwh's. Tried to visit the site but after disabling all the cookies (ggrrrrrrr) i did end up at a use,ess site. Can you send me a link to this active balancing units? Active is the way to go but there are very little ones that do the job well and reliable is my feeling

Holy cramp this is awesome

Bro your video was the best I've seen very easy explanation 👌

It’s been a while, how’s the system running? If you had to do it over what would you do different? Also, can’t find those balancers, do you have an updated link please?

i went with Jack Rickard EVTV BMS controller, it works great and no modification. Plus you only need one BMS controller and you can go up to 65 Tesla Modules. Just get the Can wire harness they sell.

Aloha, bad link. Please update or tell us the model number of your BMS. MAHALO

Do you connect the battery temperature sensor to the active balancer? What’s the difference between balancer and BMS?

Hi, Im building a Tesla battery pack 18S. And Im using a DALY 20S BMS. 1st Question- the only Black Balance Lead goes connected to the negative terminal of the battery pack or to the (-) connection of the Tesla battery thru board installed in the battery with the farthest negative connector of the battery pack? 2nd Question is what shall I do with the last 2 leads from the BMS, cut them?

Hello, This is a great video. Please tell me the 2 main chips in the Testla board if possible. In addition, Can you talk about what plus point of your module balance than Testla board?

Hello. Great work. Can you please tell me the name of the connector pins that you used to connect the battery to the balancer? Thank you

Awesome

Hi there, great video. I also have a question on the number of balancers. You are using a 24s balancer which means that two is more than enough for the build. Is there any reason why you are using one balancer per battery?

Using that balancer do the cells have to connected in sequence cells 1,2,3,4 to the board or can it be connected in any order 1,3,2,4?

That was cool broooo🤓 and the batteries on the wall is perfect really great sir😊.

Hi Have got a few questions relating to the following ? What’s the best and safest charge rate ? What’s the safest configuration for your cut of charge ? What Volts should be the lowest possible on the modules at 48 volt ? And the highest charge ? Thank you so much for your time You are doing a great and wonderful thing here Thumbs up

Howdy! I love your work, videos, enthusiasm and insight! Keep up the good work! Question: I recently bought 4 tesla smart 57v batteries for off grid solar. Im using an outback flexmax 80 which has the thermal sensor and other safety settings(max charge etc) Im using an sma sunny island inverter which has a temp sensor as well as settings for low power shut off etc. i feel pretty safe, but want to add bms for extra protection. This looks like the one for me. I bought parallel boards to connect all 4 batteries together for balancing, but maybe instead i should get 4 separate balancers like you have here. Balancing all 4 big batteries with only one small balancer may be too slow/unsafe...? It sounds safest to have a bms that can interrupt the large power cables to/from inverter/charger, but that seems tough to find (some large relay controlled by the bms etc) i see this balancer can pull power to bring down overcharged cells. Will this, or another solution you know of, disconnect bad cells to help prevent fire? Up until now I’ve been using FLA with the most caveman rig possible and its been flawless, safe & cheap but not so efficient. And advice is greatly appreciated.

Good structure

Hello, can I just use one BMS that is capable of 24 cells for four battery modules in 48v, why you use one for each module?

Can you use the other open red wires on one active balancer for two battery modules? Meaning b1, b2, b3, b4, b5, b6, the b7 to 1, b8 to 2,... ?

Great work ❤️❤️👍

I am just curious. Why do you think the original Tesla BMS is inferior to an aftermarket BMS? Why not leave the Tesla BMS board in place and use a BMS controller like the SimpBMS to control them all?

Why not use Simp BMS? You can use original slave from Tesla

So... I went through all the comments, because the links are not functioning, and no clear mention of the BMS is mentioned. Can you provide information on them, please?

Nice setup, how did you mount these batteries to the wall?? thanks

Hi any help I bought Tesla model 3 24v. 5.2 kWh how to wire 6s active bms 1.2 balancer

Where did you buy the male connectors for the active balancer?

Looking for balancers capable of this. I noticed your link is down. Any recommendations for Battery Balancers?

Where did you get the battery modules and how much did you pay for them?

I think it is totally not necessary to install those Active Balancers at all on your Tesla battery module of 5.3kwh block!!! What you need is BMS only? You know why? You did not couple each block of 5.3kw by yourself by getting different tesla cells to build the block by your self. If you had done the pack by using different cells then you need active balancer. Active balancer is not BMS so you still need BMS there. If not you will damage the battery. What you have there now is only an Active balancer with no BMS. If i am wrong correct me.

How much input will you need to heep the battery pack charged?

My battery pack Is unbalanced and now the car wont give me more than 35% of its capacity, thats the dealers diagnostic, i have a jac esei1 2020 and i live in México, the dealer wont give me supoort and right now i dont know what to do to fix this issue, maybe you could help me? Maybe u know someone of your partners that live in México and could help me? Please.

sorry for my question, but how do you control the on and off of the battery with this balancer. the BMS normally turn of the battery when it get the to the numbers. do i have to set it in the inverter? i have a different type of battery, like the nissan leaf installed already. does are 48v but it set it to go to 54v top and 46v down. i dont think that the tesla can handle the same setting. i think in that case i need a BMS to handle the charging situation on the tesla.

Hi. The batteries are in 48v. How much voltage can you charge them. Because I want to star my tesla bank. Thanks.

I just got my first Tesla pack. It didn't have BMS.. so what color wires are what? As far as number one so one so forth

What bms is that why did you did not list it who on watt is useless booking information

Why not use the stock built in active balances ?

Where did buy the battery? Let me know thanks. Aloha from Oahu.

Hi, I am a newbie and would love to build a system similar to yours. I have never done it before. Do you offer your expertise to help or do you have a complete list of items required to build a system like yours. Thanks. I love using Tesla battery for my house.

Greetings, why did you swap out the other Tesla batteries? Did you have trouble with them. I opted for the 7s config because I have a 24 volt system. The 6s just seems a little low for a 24 volt system. If I had a 48 volt system the 6s is a much better deal. Just asking. Thanks

Howzit bruh? where did you get the tesla batteries? You stay on BI? Thanks!

I have a 3840 ah battery im looking for a bms my batterys ar lifepo4 wat do you recommend 🤔

I have one of those balancers for 48v system, and they work great...but they are quite expensive if you buy that many..did you get some kind of a deal?

Can you send me a diagram on how to hook them up I bought me a ranch and i want the same system you have

How to mount to the wall? Can you show me how you mount the battery to the wall?

Hi all, the Active Battery Balancer seems to be no longer available :( Does anywon know where I can get a Balancer/BMS for the larger Model 3 batteries. I have a full pack (4 batteries) and am wanting to replicate just as the video. I'm in the UK but I'm sure I could find a way to ship from anywhere :) My problem is I'm unfamiliar with this part of the equipment so am not sure what to look for on the Internet and when I do find something I don't know if it will do the job nor how well. Balancers/BMS's for S and X batteries are common but Model 3's seem rare so any help gratefully received. Thanks all

Good morning. I have a question for you. What's the voltage on your system? And what are you charging them to? Because I'm thinking about getting some.

What's the difference / pros and cons of the first set of Tesla batteries versus the set you have now?

If there are 440 cells per module how does 16 modules comes up to be 85Kwh,400V max and 350V Nominal and how to determine the Range per kWh? Also how are the cells arranged and what are those things that you called Bust Bars?

Can I use a single 24v pack without installing BMS?

What is net weigh Tesla pack

Top 👍🤗

Gut 🤗👍 Super

Wonderful video as usual. Are these just balancers or they perform the function of BMSs as well?

I think I am more confused after watching this. LOL What do all those red wires attach to???

None of the above links seem to work...

Can't i leave and use the custom bms that came with the pack?

I ordered a 2s to 8s unit for $14 now they are $28

nice, wish the price cheaper

👌

How much price of each pack

Hello. Please can you renew link to balancer? Thanks

It looks like your bms can support up to 24s configuration and you're running a 12s setup(50.4 volts)... you could run that entire wall on 1 BMS, instead of 1 bms for each pack. please message me and I'll help you clean that install up! look at it this way, each module is 6s74p pack.(25.2 volts full charge.) 2(packs) in seris is 12s74p. and 3 of those in parallel is 12s222p. That is your entire wall, 12s222p. so you only need 1 BMS that can do 12s. Also, If you have the money to build that system, why dont you spend the time and on the tools to pin, depin, and crimp new connecters. You can make new ethernet plugs, balance plugs, and so on. then you don't have unsightly wire joiners. All the connecters have a name and you can purchase the tiny metal pins inside them and crimp them onto the wires.