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Question: Regarding Power Bank for iphone 5s55

I am from india I would like to buy a power bank which is afordable for me.



My charger gives a output of 5V/1A to my iPhone 5s.



But the power gives output of 5v/2A or 7v/2A or 12v/1.5A description in power bank says that it can detect phone voltage and current range of phone and can give output according to that.

So whether it is safe to use that or not.

This is link of power bankhttp://m.buy.mi.com/in/item/3174300006/?RNType=product&product_id=3174300006#pro duct

Please help me.

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Feb 26, 2018 3:42 AM in response to @uday In response to @uday

@uday wrote:


Thank u

But it gives 2A current but my iPhone requires only 1A there won’t be any problems ri


Your iPhone doesn't actually require any particular current input. It can handle anything that provides from a standard 500mA USB port up to 2100 mA. Any power adapter or power bank is ideally just a voltage regulated power supply. One may be current limited, like the 5W/1000mA adapter that comes with iPhones. In any case, your iPhone won't accept more than its regulated maximum current in, which should be 2100 mA. You could have a supply that could theoretically provide 10,000 mA, but that doesn't really matter.


If you use a more powerful supply (up to that maximum 2100mA) then the charging should be faster. The maximum charging rate (controlled by the phone) happens from 0% until maybe 80%, but then it will slow down to protect the battery from overheating above this. Some people prefer to use a 1000 mA power adapter whenever possible because it theoretically reduces heat generated while charging, and thus a theoretical improvement in longevity. However, it's safe to do so. I charge with a 12W iPad power supply or my Mac at home, and with a 2.1A adapter in my car. It theoretically is affecting the longevity of my battery, but I consider it a fair tradeoff for the convenience of faster charging.

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Feb 25, 2018 7:33 PM in response to @uday In response to @uday

Looks fine to me. It is a flexible power bank with two USB-A ports a micro-B input, and a bidirectional USB-C port.


If you use a USB-A port your phone will accept up to 2100 mA at 5V. Only the USB-C port can provide 12V, but it auto selects for the device. If you use that with a Lightning to USB-C cable or with a USB-/USB-A adapter, it will supply 5V to the phone.

Feb 25, 2018 7:33 PM

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Question marked as Helpful

Feb 26, 2018 3:42 AM in response to @uday In response to @uday

@uday wrote:


Thank u

But it gives 2A current but my iPhone requires only 1A there won’t be any problems ri


Your iPhone doesn't actually require any particular current input. It can handle anything that provides from a standard 500mA USB port up to 2100 mA. Any power adapter or power bank is ideally just a voltage regulated power supply. One may be current limited, like the 5W/1000mA adapter that comes with iPhones. In any case, your iPhone won't accept more than its regulated maximum current in, which should be 2100 mA. You could have a supply that could theoretically provide 10,000 mA, but that doesn't really matter.


If you use a more powerful supply (up to that maximum 2100mA) then the charging should be faster. The maximum charging rate (controlled by the phone) happens from 0% until maybe 80%, but then it will slow down to protect the battery from overheating above this. Some people prefer to use a 1000 mA power adapter whenever possible because it theoretically reduces heat generated while charging, and thus a theoretical improvement in longevity. However, it's safe to do so. I charge with a 12W iPad power supply or my Mac at home, and with a 2.1A adapter in my car. It theoretically is affecting the longevity of my battery, but I consider it a fair tradeoff for the convenience of faster charging.

Feb 26, 2018 3:42 AM

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Question: Regarding Power Bank for iphone 5s55