This solar-powered battery is great for off-grid travel in the tropics
Easily the most outdoorsy of portable batteries, the 170x90x18, 242g Powermonkey Extreme houses a massive 9,000mAh Lithium Polymer battery, which is good for about three or four charges of an iPhone 5S and, in our test, 90% of an iPad Mini 2. A load of adapter connectors (including mini USB, micro USB, Nokia, Samsung, LG, Sony Ericsson and Sony PSP) in the box help with all of that.
However, it’s how it charges-up that’s surely the headline act; a separate solar panel uses new Maximum Power Point Tracker tech to make use of low light (great for the UK) to charge-up in about 14 hours. A long while, granted, but since it will keep your gadgets going for an entire day or more, this new version of the Powermonkey Extreme is – despite the high initial cost – a breakthrough product.
Though it’s also waterproof, the add-on IP65-rated Aquastrap (£20) ensures that gadgets can be charged on-the-go in wet conditions.