Solar-charged batteries aren’t exactly wow factors these days, unless they’re dirt cheap like this Scosche solBAT II. With 1,500mAh of juice, this dongle can carry slightly more power than your average smartphone, and can also take any device with a USB cable. However, before you fork out $29.99 to Scosche, you should know that the solBAT takes between four to five days (!) to charge up fully under sunlight — not ideal for most power-hungry smartphones nowadays. There’s always the $93.23 Energizer SP2000 (2,000mAh) for your consideration — it’s bulkier, but with three solar panels it only needs six hours of solar-charge time. Guess we’ll just take the faster one, thanks.
