Active Cell Balancer (Will)

[grizzzman]

I thought you would like to read this (Will) it is a 3S version but its clear that its the same manufacturer. Active Balancer

 

[b.james]

Brilliant work . Thought they worked . Saved me a heap of looking.

 

[norbert66]

What does the red light indicate?
Is the cell charged or discharged?

 

[grizzzman]

The light shows its active. Looks like it does transfer power from one to another.

 

[ScoTTyBEEE]

It says at the end of that video max balance charge is 1.44ma, it's only for 18650 sized batteries, not prismatics.

 

[chrisblessing]

I may have had one of these fail. Over the past several days I was having a terrible time keeping 4 cells balanced, with one cell dropping to 1.91v and another rising to 4.2v. I thought I had an errant charge controller and I was moving resisters around like a madman but to no avail. I disabled charging for a day and let everything settle overnight and the battery voltage dropped so low the Venom wouldn't light up. Battery pack voltage was around 2v. I disconnected the active BMS and connected another non-active BMS I had on hand and within a couple of hours everything was balanced. I'm charging in full sun now and they're all staying very close to one another.

 

[grizzzman]

I'm starting to see "active balancers" with the capability of turning off.

 

[Will Prowse]

Yeah they usually work nicely. The first one I received and tested was not working, and it later burned out (one in my video). I tested 3 others and they worked well

 

[grizzzman]

Yeah they usually work nicely. The first one I received and tested was not working, and it later burned out (one in my video). I tested 3 others and they worked well

Have you tested the capacitor type active balancer? I have ordered cheapo multi meters from China (had a free one from harbor freight) so I can set up an 4S tester (I also have a potted active balancer on the way. What I liked about it is the on - off switch