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Amazon.com: Kaisiking Professional Battery Tester Battery Activation Charge Board, Phone Battery Repair Circuit Board with Power Current Cable Compatible for iPhone X 8 7 Plus 6 Plus 6S, iPad, Samsung, Oppo etc. :
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IPhone 6s, max capacity 81% and battery still dies in 1 hour, bad battery? Grandma owned phone since it was bought new. : r/mobilerepair
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