Anker Power Bank, PowerCore Slim 10000 Portable Charger
If you need a lot of power, than this Anker power bank should be on your list. Built for adventure with superior durability and scratch resistance, this bank is one of the slimmest and lightest 10,000mAh charges around.
£22.99 - Buy Now
Powermonkey Sport 25 power pack
How about a solar panel you can use either back at base or attached to your backpack whist walking?
Well, the BioLite SolarPanel is that unit. It has a 5 watts per hour output during peak sun, providing enough power to charge phones, tablets and wireless earbuds. Using the corner latches, you can attach the panel to your backpack and charge items while you are walking - or back at base, use the sun dial to perfectly align the panel using the sturdy 360 kickstand, to make sure you don't waste any of the sun's rays.
£68 - Buy Now
Once upon a time, solar charging was a bit of a joke... taking literally days to charge devices - especially here in Britain. But now solar technology is starting to be a serious option for charging walkers' devices. And leading the pack is the Freeloader iSIS.
Obviously, charging times depends on the sunlight available, but the solar cell on the iSIS is upto 50% more efficient than others, and can fully charge the average smart phone 3 times at full capacity. Thanks to its' built-in charging arms, it will happily charge either Lightning or Micro USB devices, and a built-in stand allows you to angle the iSIS at the sun at all times - or you can even attach it to your backpack.
And if you have no sunlight at all, the iSIS can be charged back at base in the usual fashion by plugging it into a Mains USB charger - and will still provide charging for devices whilst out on the hill.
£64.99 - Buy Now