|Item Weight||2.4 pounds|
|Product Dimensions||11 x 2 x 20 inches|
|California residents||Click here for Proposition 65 warning|
|Item model number||SP-200|
|Manufacturer Part Number||SP-200|
Schumacher SP-200 2.4W 12V Solar Battery Maintainer
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Harness the power of the sun with the Schumacher SP-200 2.4W 12V Solar Battery Maintainer. Trickle charge your 12V battery and extend battery life, no electricity needed. The water-resistant solar panel utilizes amorphous solar technology. It even works in cloudy conditions. This unit is environmentally safe and requires minimal maintenance. It is ideal for boats, cars, motorcycles, snowmobiles, trucks, RVs and more.
From the manufacturer
Schumacher SP-200 2.4W Solar Battery Maintainer
Harness the power of the sun with the Schumacher SP-200 Solar Battery Maintainer. Trickle-charge your 12V battery and extend battery life – no electricity needed. This water-resistant solar panel utilizes amorphous solar technology – it even works in cloudy conditions. It’s great for boats, cars, motorcycles, trucks, and more.
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2.4w / 12.5V = 19mA
Just enough to overcome the 14mA draw on the vehicle battery.
Installed in an old s-10 truck that does not get much use. I "RTV" glued it to the dash.
I have tested them with a multimeter and they do put out what they claim.
Unfortunately it is not enough to keep the battery charged due to the parasitic nature of components in each vehicle over time. Even directly clipped to the battery and not the lighter socket.
Example, Just finished one month stay at the beach, VW , panel on dashboard all the time clipped directly to battery FULL SUN. at the end of the month battery tested only 70%.
Chevy at home, same thing, solar panel on dash clipped directly to battery, 70% battery charge when we got back home. Each started out 100% charged with a computerized charger plugged into wall outlet.
Batteries are 1 yr old in both vehicles. And I keep them on a electric maintainer charger all the time.
The storage building is 50-75 feet from electricity. I did not want to string an extension cord across my yard all winter.
I have used this unit for a couple years and it does a fine job.
I am glad I purchased this charger.