Don’t get caught out with the wrong power bank! There are a few things you need to consider, based on what you want to charge, how many times and how quickly you want it done!
Know the battery capacity of your device – see the table below as a guide. If your battery is 1500mAh and is 0% now, a power bank with 2200mAh can charge your phone 1 time. If your battery is 3000mAh and is 0%, a power bank with 2200mAh will not be able to re-charge to full because the phone battery capacity is higher than the power bank, so it may only charge 75%.
It’s important to note that a power bank will not deliver its full advertised capacity to your device – some of this energy is lost through the heat generated and voltage conversion.
If you require a power bank that is able to charge your phone several times, you need a power bank with higher capacity.
|iPhone 5S||1560 mAh||Samsun Galaxy S5||2800 mAh|
|iPhone 6||1810 mAh||Samsun Galaxy Tab S (10″)||7900 mAh|
|iPad Air 2||7340 mAh||HTC One (M8)||2600 mAh|
|iPad 4||11,560 mAh||Nokia Lumia 920||2000 mAh|
|Blackberry Z10||1800 mAh|
2. Output Specification
This refers to how quickly a power bank will charge your device. 1A – 1.5A output is generally for smartphones, 1.5A – 2.0A output is generally for tablets. You can use either output to charge any USB device – it will draw only the power it needs. However, you might find some tablets, usually iPads, will refuse to charge from lower specified outputs.
3. Number of Outputs
1 output to charge 1 device, 2 outputs to charge 2 devices simultaneously. Obviously this will draw more power!
4. Short Circuit & Overcharge
Choose a power that can automatically cut off the electricity when charging the battery full, because overcharge will certainly shorten the life of the bank. Look for one that features a power cut when a short circuit occurs.
Different sizes suit different needs. Some will fit in your pocket, others you need a bag for! If you’re going mobile pick one that suits lifestyle.
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