Anker® 2600mAh Li-ion Battery for Samsung Galaxy S4 GT-9500, GT-I9505, with NFC function, Galaxy S4 Active incompatible with (Wireless Phone Accessory)
This battery worked normally for about three weeks. But it then deteriorated rapidly. A month after the purchase, it loses 80% of its charge during the day, even without using the phone. By using it, I have to recharge one or even two times during th