How far does a power bank go?
Capacity is shown in mAh. Some of that energy is lost when the power bank charges your phone, so expect roughly two-thirds of the number on the box to reach your phone. Most phone batteries are between about 3,000 and 5,000mAh, so a 10,000mAh power bank gives a typical phone around two full charges.
Flying? Power banks must go in your hand luggage, not the hold. Banks up to 100Wh are normally fine, and between 100Wh and 160Wh need your airline's approval. The Wh rating is printed on the power bank, and a 30,000mAh bank is usually just over 100Wh, so check with your airline first.
About buying this
20W 20000mAh Christmas Tech Gift Box Charging Adapter, 4-in-1 Lead and Power Bank is listed on Gadgets Galore by our friends at FoneFunShop, a Sheffield phone shop trading since 1994. When you check out you pay FoneFunShop directly, and they pack and post your order and look after any returns. Gadgets Galore earns a small referral commission, which costs you nothing extra.
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