The Solpowben Solar Charger is now on sale at Walmart for just $17. You can save 66% on this portable battery charger that ...

You never know exactly when you'll run out of juice, so head your problem off at the pass with this charger.

A solar-powered portable charger can be a lifesaver in times of need, and right now, you can get the Solpowben 20,000mAh Solar Charger at Walmart for only $17!

Lifewire reviewed an X-Dragon 10,000mAh solar charger favorably, and if that model is sold out, there is a 24,000mAh charger with 4.2 stars on Amazon that is simply a higher-capacity alternative.

Best splurge: Anker SOLIX C1000 Best budget: Charmast Portable Charger with Built-in Cables How we chose the best solar power banks I’ve used solar power banks about as extensively as anyone.

We've tested and reviewed products since 1936. Read CR's review of the Goal Zero Nomad 20 Portable Solar Charger portable charger to find out if it's worth it.

Fortunately, with this Ring Battery Doorbell that comes with a solar charger, you can forget that forever—and right now you can get this combo for 47% off. Normally $150, it’s now $80!

Instead of keeping the cells on trickle-type devices to maintain their charge, KJ installed Cascadia 4x4’s solar battery charger, which is available from Summit Racing Equipment. Yes, sun energy.