Battery Tender 021-1164 10W Solar Charger

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Price: $80.84 $69.50   

Product Feature

• Built-in 3-step microcontroller for precise charging
• Waterproof and sparkproof for outdoor installations
• Easy, do-it-yourself installation
• Built-in temperature compensation sensor
• 12V nominal voltage 540 mAmps

Product Description

Harness the power of the sun with this Battery Tender 10-Watt Solar Panel with built-in Battery Tender 3-step automatic microprocessor controller. It's 100% portable and ideal for battery charging and maintenance, and for storage space without power access. Battery Tender solar panels are the only panels available with a built-in charge controller to prevent overcharging.

Battery Tender 021-1164 10W Solar Charger Review

The Battery Tender 10W solar panel worked well for 7 months. Now the control unit has apparently failed and the charging LED only flickers occasionally. I was propping the panel against the inside of the windshield of my parked car where it could receive direct sunlight in the afternoon, but even when the sunlight was indirect, the LED charging indicator on the Battery Tender would glow as soon as the sun was fully up in the morning. The car in question doesn't get driven enough to keep its battery from running down, and the solar panel was doing an excellent job of maintaining the battery. I had purchased an adapter cable that plugged into the car's cigarette lighter socket so it wasn't too inconvenient to set up and remove the panel. [Battery Tender Deltran Cigarette Lighter Adapter 081-0069-5]

Previously, I needed to use a battery charger every couple of weeks and now, unfortunately, that chore has returned.

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