"It really depends on what the end user is looking for," said Buck Buchanan, marketing director with Geneverse, which makes portable and home battery systems. Can solar panels save you money?

[esotericsean] gets around that by modifying his Game Boys with a USB rechargeable ... a micro USB port. The original battery housing is similarly carved out to suit a 2000 mAh lithium-polymer ...

[Quint Builds] attempts something up that alley by using solar power to pump water up onto his roof and later releasing it for power generation. (Video, embedded below.) Earlier [Quint] had built ...

Best slimline power bank Anker PowerCore Slim 10K PD (~£23) Check price at Amazon Best iPhone power bank Anker 622 Magnetic Battery ... use of USB-C for the single input/output port is a ...