![]() ![]() Now, this is also where the power manager may have a bug with its reset. As you can imagine, with 8 cells this can take a long time. ![]() Then the controller has to balance the cells by first discharging the 1 cell, or by passing the current from the 1 cell to the 2nd cell. The thing is that, cell balancing actually takes a very long time (sometimes up to days) because once 1 cell reaches the maximum voltage the controller will stop the charging process to avoid overcharge. The cells are connected in series, therefore the cells have to be balanced in order to avoid cell reversals during discharge. However, the resulting 36Wh tells me that the power manager has a bug. The pack was designed to hold 74Wh, but I've used it for about 11 months so 65Wh makes sense. And afterwards, the battery only held about 36Wh. I had roughly 65Wh before I ran the power manager reset. The reason I know that the pack is still good is because I monitor my battery's capacity on a weekly basis (hey that's what engineers do ok). I know for fact that the cells are still good, but power manager thinks there is something faulty, therefore has basically written a limit on the charge capacity to the controller in the battery pack. ![]()
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