Solar Batteries
Inventor Knut Karlsen has designed batteries that recharge themselves when they are exposed to sunlight; no electric power source is required!
Karlsen’s SunCat batteries circumvent chargers completely by integrating solar cells within the batteries themselves. To make these prototypes he attached 1.8V flexible photovoltaic cells onto 1.5V NiMH rechargeable batteries and connected them with a conductive silver pen and a few flat wires. The effect is similar to a trickle charger, which slowly charges a battery and can be left attached indefinitely without overcharging.
From the Upcoming
ueue, submitted by Minnesotastan.














