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Can somebody explain this to me? I'm kinda confused about what power bank should I buy. One says the output is 5.3V 2,000mAh(Charger A) the other one is 5.0V 2,100mAh(Charger B). I will use it on my Samsung Galaxy S4 which has a charger that outputs 5.0V 2,000mAh.
So which one will i buy, i'm confused because samsung charger is 5.0V charger A is 5.3V so that's exceeding. However, charger B is 2,100mAh when the samsung charger is only 2,000mAh which is also exceeding. So will both this powerbank do some damage to my phone because it does not output the same as the charger of my Galaxy S4?