been using a different charger; is my battery ok??

So before I misplaced my original s7 charger at a far away friend's house, my galaxy s7 has had pretty solid battery life on what I would consider relatively heavy use(turning the data on and off and sometimes using quickcharge) I'd be able to hit like 15 hours. Now since I don't have access to my charger for awhile I've been using my s4 charging block along with the chord that came with my verizon elipsis 8 tablet (the free tablet with the phone)

The chord fits ok and the charge time is...

been using a different charger; is my battery ok??

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