Plan on doing some camping this spring and summer? You’ll need one of these.

CR's experts pick the best portable solar panels and battery chargers to power devices like phones and laptops, plus back-up batteries and power stations.

The sun is finally making a comeback, which means festivals, garden parties and – most thrillingly of all – the prospect of harvesting free electricity from the sky using one of the best portable ...

A solar-powered battery charger features patent-pending technology that provides an energy system to distribute electrical impulses generated by a solar panel. It uses a microprocessor to implement ...

Solar charging of batteries has recently become very popular. A solar cell’s typical voltage is 0.7 V. Many panels have eight cells in series and are therefore capable of producing 5.6 V at most. This ...

Solar power technology is becoming more accessible thanks to developments like portable solar panels you can use to power your devices. That's why solar-powered phone cases sound compelling. Not only ...