Let the sun power your calls
CNET reviews the Scosche SolChat solar-powered Bluetooth speakerphone.
A Bluetooth speakerphone with no juice won't let you make hands-free calls, so Scosche equipped its SolChat device with a solar panel. When your car is parked in the sun, the SolChat keeps itself charged and ready. For winter months and enclosed garages, the SolChat also has a 12-volt charging cord.