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I bought a Samsung Power Bank EB-PN910BBE 9500 mAh capacity. I emptied the Power Bank and charge it with USB Charger Doctor attached between the charger and the Power Bank. The USB Charger Doctor only shows 9040 mAh when the Power Bank is fully charged. Is this normal? Maybe the KEWEISI USB Doctor is not very accurate? I wonder where the 460 mAh went to?
Please help. I bought Samsung Power Bank EB-PN910BBE, 9500 mAh capacity. I used the KEWEISI usb charger doctor, and attached it to the power bank while charging all of my devices. After the Power Bank is completely empty (no more LED light is on), the KEWEISI USB Doctor only shows 5970 mAh in capacity. What the ??? Is this not a good sign? Is my Power Bank fake or too old or what? It is bought as new, box still sealed eventhough a bit dusty but I think it is an old stock.