The Besiter Mercury is the first portable charger I have come across that I actually use and like. It is roughly the same size as an iPhone 6, with similar smooth, curved edges. It weighs about 200g.
It is available in two colour combinations – black/grey or white/gold. They intentionally look as if they could have been designed by Apple as both are made from the same 7000 Series aluminium as used in the iPhone 6/6Plus. (A plus point in my books.)
Besiter also says that it is the “world’s first and only MFi-certified power bank which means that you only need a single lighting cable to charge up your device and the power bank”.
There are two charging cable options – MFi for Apple users and Micro USB for Android. With two simple ports (lightning and USB), you can charge the Besiter Mercury from the mains, or power two devices simultaneously with the dual output slots.
You can also charge both the Mercury and your smartphone or tablet (when plugged into it) at the same time. (Useful when you are in a rush – or are in a hotel room with only one travel adapter.)
It takes a couple of hours to fully charge the Mercury but is really handy to power up your phone when you’re out and about. There is an on/off switch on the side to save power, and small lights to indicate how much power is left in the pack.
Inside it features a lithium ion polymer (LiPo) battery that has a charging capacity of 10,000 mAh – enough for two or three full smartphone charges from flat. The company also says it’s “slimmer, smaller and safer” than lithium ion batteries. I didn’t have a problem taking it through airport security.
PROS Well designed, effective charging, portable, good value for money.