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.

We may receive a commission on purchases made from links. If you're off-roading, it's a neat idea to use your engine to top up your battery, which prompted Bluetti to launch the Charger. You could ...

A solar charger with a controller is recommended to maintain the battery of a little-used car. Honda's maintenance minder indicates when service is needed, but brake fluid is generally replaced every ...

The Bluetti Charger 2 is the company's latest charger for van life, RVs and digital nomads. I took a look at CES 2026. Ajay has worked in tech journalism for over a decade as a reporter, analyst, ...

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 ...