64ah headway bank balancer

[mikeysheff12]

So I built a headway bank, all of the polarities are correct. I went off of a YouTube video after doing a ton of research on lithium and headway cells specifically. But I’m trying to connect the balancer, connecting the negative first and then going through the bank, adding the positive on the same bank I already connected my negative onto and going in order. When I tried to connect my first balancer, it ended up frying the balancer when I tried to connect the second bank, now with this new balancer, it’s sparking and I’m afraid it’s going to fry the board like the last one did. I’m not sure what I’m doing wrong or what’s going on

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[Popwarhomie 5,000+ posts]

What balancer are you using?

 

[mikeysheff12]

What balancer are you using?

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[Popwarhomie 5,000+ posts]

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I have seen a few problems with those.

I would recommend a Heltec 4s or HA02.

 

[mikeysheff12]

I have seen a few problems with those.

I would recommend a Heltec 4s or HA02.

So something like this?

3S 4S 5A Active Balancer Capacitance with V1-8 copper nose Wire connector

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heltec-bms.com

also what if I have this problem with this next balancer, I figure it would be a problem with the lithium bank but I’ve measured all of the cells and they all range from 3 - 3.2v

 

[Popwarhomie 5,000+ posts]

So something like this?

3S 4S 5A Active Balancer Capacitance with V1-8 copper nose Wire connector

[vc_row][vc_column][/vc_column][/vc_row]

heltec-bms.com

also what if I have this problem with this next balancer, I figure it would be a problem with the lithium bank but I’ve measured all of the cells and they all range from 3 - 3.2v

Yes.

Did you passive balance your cells?

Wiring the balancer.

 

[mikeysheff12]

Yes.

Did you passive balance your cells?

Wiring the balancer.

How do you passive balance them?

 

[Popwarhomie 5,000+ posts]

How do you passive balance them?

All positives together and all negatives together. Parallel

 

[mikeysheff12]

All positives together and all negatives together. Parallel

View attachment 36921

Oh no I haven’t. I’ll do that when I can get my hands on two bars of metal. Right now I already have the bank built in series with the bus bars connected and everything

 

[Popwarhomie 5,000+ posts]

Oh no I haven’t. I’ll do that when I can get my hands on two bars of metal. Right now I already have the bank built in series with the bus bars connected and everything

Always a good idea to passive balance the cells IMO. Gets them all very close in voltage before hooking up the active balancer.

 

[mikeysheff12]

Always a good idea to passive balance the cells IMO. Gets them all very close in voltage before hooking up the active balancer.

How long would I have to do it for?

 

[Popwarhomie 5,000+ posts]

How long would I have to do it for?

I did mine for 24 hours.

 

[mikeysheff12]

I did mine for 24 hours.

Alright, good deal. I’ll find some metal tomorrow and do it