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Old 04-13-2019, 07:34 PM   #3419 (permalink)
thingstodo
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Quote:
Originally Posted by freebeard View Post
I know EVTV are opinionated about BMS. ...since 2009.

GET RID OF THOSE SHUNT BALANCING CIRCUITS - EVTV Motor Verks

And they've had fires in their shop since during testing. Apparently bottom balancing > top balancing?
Yup. But what I read .. and listened to in the videos .. is that Jack and EVTV are still against BMS for LiFePO4 - they appear to take care of themselves for the most part.

I'd have to go back and look. I thought the fire was on a pack that was suspect ... a Better Place pack that had low capacity or something like that. I'm too lazy to go look

The Lithium polymer cells - Leaf Cells - EVTV don't deal with much. They still have a couple of the Better place packs around the shop. You see them in the background (or parts of them, I guess) in some of the shop videos.

The Tesla cells EVTV actually USE the BMS that came with the packs, just replace the master that gets the data. I think their master even activates the top-balance circuitry if you charge up the batteries past a certain voltage.

So things do evolve
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