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*. 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.

DRPB3010A - PowerBank USB - Duracell Direct co uk

It looks metallic, but the case is actually made of plastic polycarbonate, which houses the lightweight lithium-ion polymer battery cells that power it. Again, it has two USB ports, one that has a 2.4A amperage, and one 2A, and four LED indicators that show the battery level.Another cool fact about Duracell's offering is that even the biggest is only 203g, considerably lighter than comparable products which is nice. The two USB ports mean that you can charge two devices at once. It offers pass-through charging and cleverly, the efficient circuitry prioritizes charging your connected device first and then funnels the extra energy to your IonBank itself at the same time, so you get the optimum run time out of the time you have spent plugged in.

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

It takes around three hours to charge from empty (considerably less time than the Juice Power Station), and once charged, Belkin says its tests show that charge will not diminish by more than 50pc even after a year’s time left dormant – all very impressive, and useful. 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. Why we like it: The Daddy of the power banks we reviewed. Powerful, well designed, not too heavy, and brilliantly priced. Similar to the Juice Power Station, it also has an LED charging gauge so you can easily judge how charged up it is. Why isn't in our top three? Well, it's an ugly, clunky thing, truth be told, and it feels a little heavy. That said, I’ve long been a fan of Griffin accessories due to their impressive durability (particularly their phone cases); in general, it's a company you can trust. Another point of difference which makes the Moshi IonSlim 10k stand out as are the battery's lithium-polymer cells, which have no ‘memory effect’ (an effect observed in some rechargeable batteries that causes them to hold less charge over time, because the battery appears to "remember" a smaller capacity). You can charge the IonSlim as frequently as you wish; it should stand the test of time.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)? There are two payoff to all this. The first is that the product is more complicated to use than the Power Station or Belkin – you need to take care to get the right cable in the right slot (an exhaustive instruction manual makes this easy, if somewhat time consuming, to learn). But which one is best? I tried a range of power banks at festivals, on camping trips and flights, as well as during the course of my everyday routine, and reviewed them with the size, weight, charging speed, ease of use and the warranty in mind. Meanwhile, lithium-sulphur batteries might be a more practical stepping stone: they’re less expensive to make, weigh less and store almost twice the energy of lithium-ion batteries, and are better for the environment. However, sulphur is a poor electrical conductor, so the technology still needs developing.