Quote:
Originally Posted by redpoint5
... Assuming the seller has not tampered with the battery gauge, the charge indicator lights will show the relative health of the battery. When the car is new and has a very good battery, all charge lights illuminate when fully charged. As the battery degrades, fewer of the charge lights will illuminate even when fully charged. This gives a relative indication of battery health.
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Wondering what to do if the seller HAS tampered with the battery gauge, I went looking for alternate methods to check. It seems these apps allow you to look at the health of each battery on an android device. Doing that would allow you to see if a given battery in the pack has become especially weak or defective.