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It’s a generic pack in the model. It’s has the ability to fit the entire Alta battery pack within its volume plus room for a generic controller and active cooling system. The simple shape facilitates the incorporation of many different kinds of cells, capacities, voltages, etc. It’s designed...

My solution in work right now at MSC Engineering. Actually, this was my original design and the current linkage design has changed.

That looks much better . . . . . So, the other screen shot was at about 50%? That suggests the charging and balance system is working properly. However, if the reported cell voltages are real, it also suggests problems during discharge. Worse case is that, somehow, those cells got damaged...

That's a new one to me. If I had to guess, I'd say the DRB card is going bad/data corruption or the LTC chip is bad/data corrupted. Have you tried reloading the BRD and BCU firmware. I'd start there first.

I'd definitely need a screen print of the battery tab to determine worse case. That said, I can repair your pack if you can get it to me here in SoCal.

My business website isn't up right now if that's what you're referring to. It should have re-directed you to my Instagram page @maxvonauto.

Robinhood, are you in Lakewood Ca (by bellflower/long beach etc)? If so, I'm just down the road in Corona now (I've lived in Lakewood, Bellflower and Long Beach before I retired). There's so many challenges in what you and Chris are trying to do . . . some can be worked around but others...

good point.... I’ve been building conversions with battery packs/BMS systems for almost two years now and haven’t sold one conversion to date. Why?....,until I get several hundred SUPERVISED charge/discharge cycles and many physical inspections in the books without failure I just don’t trust my...

Yes, I believe it was.

Electric Motorcycle Builds : The end of the electric rmz Lucky nobody was hurt, but it shows just how vulnerable these Li-Ion based battery packs can be to getting damaged by an external failure or individual cell internal failure. There are so many failure modes which could have contributed to...

Soooooooo….. You have an Alta but it's not working? You're looking to buy an Alta, maybe a broken (cheaper) one? Or, you're just trying the understand the Alta engineering so you can build something similar?

What are you saying?

Seems like anyone with a cheap China spot welder is making their own battery packs these days. Although I applaud and respect anyone with the fortitude to DIY, I'm seeing some very unsafe designs. I'm talking 18650 style packs now, prismatic and pouches are another ballgame. Now I'll...

looks good.

Yea, I'd need to see the battery tab view to be sure. Exactly, the BMS on the Alta has a very weak balance current compared to most of the aftermarket BMS's I work with. Even the el-cheapo China units allow connectivity, manual balance and adjustable balance current.

85.61 vs 85.65. That's 0.04v delta. Doesn't sound like much at the module level but look at the max/min P group numbers, 4.07 and 4.08. That's 0.01v, I've seen code 36 with less than that. These BMS's will typically balance (if left to finish) to within .002v. 4.07/8 is almost full. I'd...

Not sure about the humidity problem but I'm surprised you're not getting a code for battery pack imbalance, module 1 is quite a bit lower than the others.

The warning in my original post speaks for itself. I appreciate the concern for my well being and I assure everyone that I'm very respectful of the awesome power and potential for damage that these (and any other) battery packs are capable of. Virtually a "controlled release" of energy...

Finally, I'm working on a bike that needs several P-groups totally replaced due to a failure with the balancing system. These groups discharged way below the low voltage cutoff, one totally dead! You just can't wake them up and expect safe, reliable and adequate performance after that...

He didn't seem to have an issue with the old rev, he preferred it. So . . . . . . .