Product Review: Besiter Mercury Series Powerbank

The Mercury Series powerbank (comes in either 5,000mAh or 10,000mAh battery size) is a sleek and smart portable charger that every gadget fanatic should have in their inventory. The device comes in either black with a grey trim or white with a gold trim – so there is a colour combination to suit everyone’s phones and tablets. The Mercury is all about its smooth edges and expert designed exterior. The aluminium trim is made from the same 7000 Series metal that you can find on the iPhone 6S and iPhone 6S Plus.


The Mercury is the first MFI powerbank available on the market so far, meaning that powerbank charges with a lightening cable and can charge an Apple device at the same time as it’s being charged itself. For those who don’t have lightening charge capable devices, the Mercury has a micro-USB slot – so any portable electronics that need charging on the go can use this powerbank. There are 2 standard USB slots, so you can charge more than one device at the same time.

Inside there is a premium Li-Polymer battery which is smart enough to prevent itself from overcharging, overheating, short circuiting, or over currenting. Nothing can go wrong when you use the Besiter Mercury Series powerbank, nothing other than your device charging quicker than with any other charger on the market.

This slimline 5.5″ powerful portable charger is a worthy companion and a great friend for business travellers who are constantly on the move and always on the phone. The powerbank is just a touch larger than most modern smartphones, so fits into the pocket neatly. It’s always there when you need it, doesn’t interfere with aircraft machinery when flying, won’t add too much weight to cabin bags or briefcases, and doesn’t need charging constantly.


The Mercury can charge an iPhone four times, a Galaxy S6 two and a half times and a normal sized tablet or iPad once before it has to be charged again – but even then it has power pass through technology, so can charge phones and tablets at the same time with just one plug.

All views are my own, but I would like to thank Media PR UK and Besiter for sending me a black 10,000mAh powerbank to review. You can buy the charger on the Kavson website for £34.99 here: