Key Things To Know When Buying A Power Bank

 

A lot of it depends on your personal requirements.  If you don’t carry too many devices when you travel, then you can buy a small and low capacity one just to charge your smart phone.  If you need to charge an iPad, tablet, etc., then you will need a one that has a higher capacity.

Capacity – Determine Your Usage:

 

The main attribute associated to a power bank is its capacity.  This capacity is measured in milli Ampere Hour i.e. mAH. You can’t exactly calculate how many times a specific power bank can charge your device, but the rule of thumb is more mAH rating mean more capacity.
So if you have a phone with a 1500mAH battery, ideally a capacity of 1500mAH can fully charge it once.  And when you buy a portable power bank, make sure that it can charge the battery of a specific device i.e. its output voltage matches with the device you own, because if the output voltage of the charger is less than the device being charged, it won’t work. Of course, the reverse is true, if you have a charge with a larger output voltage than your device, you may be able get several charges.
Should you decide on buying a portable charger, keep your own usage in mind.  To meet huge charging needs of consumers, 8400mAh and 11200mAh, (and higher mAh) units are also available.  There are chargers that can charge almost any type of device, from all types of companies. This includes laptops, ipad, ipod, tablets, and mobile phones from Apple, Samsung and HTC. Sample Usage Guide…

• 1500mAh battery : mobile phone – 1 full charge.
• 5200mAh battery : mobile phone – 2 full charges. Tablet – approximately 50%.
• 10000mAh battery : mobile phone – 4 full charges. Tablet – at least 100% full charge.

Power banks are available in almost all the countries at various prices and in varying sizes and specs.  Before purchasing you should make sure that they are not used.  Used cell phone battery chargers will be a waste of money as their life span is not much.
Life span can also be greatly reduced if it is kept in adverse environmental conditions for a long time. There are portable chargers whose lifetime is reduced at temperatures more than 45 Celsius. However, at extreme temperatures such as over 70 Celsius there is a good probability that the battery will be completely damaged.