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Thursday, December 17, 2015How to choose the power bank

How to choose the power bank
    Several factors are important when choosing a power bank.


    One is portability: some of the power banks we review are small and light enough to slip into a pocket; others you’ll notice their presence even when slung in a bag. Pay particular attention to their weight and avoid bulky designs if this is a device you'll carry every day, rather than in certain situations only.


    Another factor is capacity. 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 heat generated and voltage conversion. If a power bank manufacturer doesn’t expressly state otherwise, expect to achieve around 70 percent efficiency. A 10000mAh power bank might therefore deliver 7000mAh of power. Some of the best power banks offer around 90 percent efficiency.