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I was thinking of state-of-charge (or discharge) meter. It might be possible to tell by voltage if pack is nearing end of charge. And of course it is good to know if some cells are weaker than others. But if battery size is pre-set to software and discharge being monitored constantly wouldn't it be possible to calculate batterys current state? Or at least give an estimate of whats left.
If yes, then it might also be possible to send this info as voltage to simple meter.
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