When putting in more than one battery in a device, why should they all be at the same charge?
In: Chemistry
Batteries of different charges will try to equalize. If they are all relatively the same charge they would equalize without much trouble no matter the battery type. However if there is a large difference then the fully charged battery or batteries will try to charge the used ones. Most non-rechargeables can handle a small amount of charging without issue but larger amounts can cause issues from the battery simply not working up to fires. Most of the time it will be safe but its not worth risking a fire or device damage to save a few bucks.
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