/diy/ - Do It Yourself

Anonymous Wed Apr 25 00:27:06 2018 No.1375014 [View]
File: 1.66 MB, 1536x2048, IMG_20180425_142029.jpg [View same] [iqdb] [saucenao] [google]

Ive got an ebike battery that wont work. Ive checked the individual banks, and most are good but one is 2.7v, but the battery as a whole will put out something like 48v.

The battery charger never indicates its putting out high current (charge light normally goes red when this happens). Ive left it on charge for days with no change in voltages, so I don't think it is doing any balancing.

Cant get anything more than 3.7v on the output side/external connector that goes to the bike.

I think the BMS is flakey, but I have no idea how to diagnose further.

Should I just ditch the BMS and wire it directly up?

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/diy/ - Do It Yourself

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