Versatility is also worth considering – for example, can you use the charger for multiple devices? What devices is it compatible with? Does it offer pass-through charging (which means you can charge the bank itself, while using it to charge a connected device)? With 20,000mAh of juice in the bank, you can charge an iPhone 7 6.5 times over, an iPad Mini 4 2.5 times over, a Galaxy S8 4.3 times over, and an LG G6 3.9 times over. By my count, that's the whole family catered for with more to spare. Try to avoid letting the battery drop to 20 per cent. This is a bit of a Catch-22 situation, but it is far easier to charge up a phone when it has between 20 and 80 per cent battery. Precharged and ready to use straight away, this is a 10,000 mAh power bank offers around four full smartphone charges. It has two USB ports, so you can charge multiple devices (one 2.4A USB port and one 1A USB port) and is compatible with most devices.

power banks for charging on the go - The Telegraph The best power banks for charging on the go - The Telegraph

Power up on the go with our lightweight, compact Duracell Charge 10 power bank. With 10,000 mAh battery capacity, the Duracell Charge 10 can fully charge a phone up to 3 times*. Includes: Charging cable (USB-A to USB-C), 20cm 1 x USB-C - PD3.0 18W max input and output 1 x USB-A – 18W max output The best idea that Duracell have had with their power banks is their "pay for what you need strategy". They've released three power banks ranging in size from 3k to 10k. The former will give you one or two charges while the biggest will give you up to five. If, like me, you're constantly low on battery – and manically texting friends to let them know that you're about to completely run out of juice – then you may be in need of a power bank or portable charger to keep your smart phones, tablets, laptops and other devices up and running on the goSwitching off data usage for apps you don't need will save your battery as well as your data usage. Running out of juice, and therefore being unable to access Google Maps, is no longer a viable excuse for standing someone up or missing a conference call. The 4 LED display lets you know the level of energy the power bank has left, when it’s charging and when it’s fully charged. There is a button which actually works to turn the device Off. And a Fast charging indicator light. Considering that today's kids are probably more interested in an iPad than a remote control car, it seems an ideal way of Duracell bringing their brand a bit further into the future.

Power banks - Duracell Direct co uk Power banks - Duracell Direct co uk

Why we like it: The Daddy of the power banks we reviewed. Powerful, well designed, not too heavy, and brilliantly priced.Wise deployment of airplane mode – when you're watching a set, sleeping or charging – will go a long way. Why we like it: It's colourful, compact, powerful enough to fuel a long weekend away, and very reasonably priced. Good for teens and their parents. And that's basically what I did. The power bank came in handy when trying to locate a friend to meet for a swim on Hampstead Heath (my phone was on its last legs – isn't it always?), and during last ditch attempts to keep my nieces and nephews entertained with games on long journeys (there’s only so much I Spy any sane adult can handle). And that power can be impressive. Despite the petite dimensions (it sits in the palm of your hand), the imuto has a charging capacity of 20,000 mAh. That's at the higher end of the market: portable power banks range from capacities as low as 3,000mAh up to 20,000mAh – and they get bigger, and heavier, as they grow (at 458g, the imuto isn't too heavy – although you'll find far lighter in this list.)

Duracell 20,100 mAh Fast Charge Portable Power Bank Duracell 20,100 mAh Fast Charge Portable Power Bank

So I'm in search for a power bank of 20000mAh with fast phone charging. Lightest weight in it's 20000mAh category too. The Juice Power Station boasts a lithium battery with a charging capacity of 11,200mAh. For me, that's plenty: enough juice to provide more than six smartphone charges, or fully charge an iPad Air. If you need more power on your weekend away, you might need to do something about your screen usage...

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This year, a team at the University of Texas at Dallas published findings in the journal Nature Nanotechnology to show that they will soon be commercially viable, since molybdenum – a metallic element often used to strengthen and harden steel – can be combined with sulphur to improve stability and compensate for poor conductivity. The slim Belkin device has 5,000 mAh of power (a quarter of the imuto) and comes with a 6-inch micro-USB cable. It’s much slimmer and lighter than the imuto and Juice (it weighs just 131g), so it’s more of an everyday power bank.