Amazon offers the Sunforce 50022 5-Watt Solar Battery Trickle Charger for $29.32 shipped. Normally $50+, this is the lowest we’ve seen it go at Amazon. Great for keeping your car or boat battery topped off if you park them for a while, this charger uses the sun’s power instead of a wall outlet. Rated 3.7/5 stars.

Other notable green deals include:

Sunforce 5-Watt Solar Battery Trickle Charger features:

  • Features sturdy and durable aluminum frame with amorphous solar cells ; Includes 12V DC plug, battery clamps and mounting hardware for easy installation
  • Completely weatherproof for added durability
  • Amorphous solar panel works in all daylight conditions; even on cloudy days
  • Built-in overcharge/discharge protection
  • Maintains and trickle charges 12 Volt batteries for your car, boat, RV, electric fence, deer feeder and more


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