Running out of power while on the road is something every gadget user has to deal with but a new portable solar charging system from Sanyo Electric could help in such situations.
The system, which is part of Sanyo's Eneloop line, combines a portable solar panel with a Lithium Ion battery pack and can be used to charge gadgets via USB. It should work with many portable products including mobile phones, music players and portable game devices, the company said at a Tokyo news conference today.
Two versions will be available, one with a single solar panel and one with two panels. The panels are built into a case that can be hung in a window or placed anywhere the sun is shining and are then connected to the smaller Lithium Ion battery-based "mobile booster", which acts as a reservoir and charges up from the panels.
The booster is needed because the solar panels don't provide enough power to directly run a gadget.
A full charge of the booster will take 3 days on the single panel and half that on the twin-panel model but after just an hour it will provide enough energy to power a mobile phone for 20 minutes of talk with the single panel model and double that with the twin model. It will charge faster on sunny days than overcast days.
When fully charged the booster can supply 5 volts at 500mA for 2 hours, said Sanyo.
They will both go on sale in Japan on August 10 and cost ¥9,000 (£55) for the single panel model and ¥14,000 for the twin-panel model. Overseas launch details were not announced.