- It is environmentally safe
- No electricity needed for operation
- Amorphous technology allows charging on cloudy days
- Rated for indoor and outdoor use
- Complete with battery clamps and 12 Volt plug
UPDATE: In response to other comments; yes, if you're charging (maintaining) large capacity batteries such as automotive or marine, a controller may be unnecessary. Caution due however with smaller batteries.
Buy Schumacher SP-200 2.4W Solar Battery Maintainer Now
The charger works as advertised. The only thing I found lacking was a status light indicating that current was flowing to the battery when plugged into the cigarette lighter. I had to use a multimeter to check contacts at outputs for voltage 19.2 volts. It appears well made, price is reasonable, and shipping was speedy.Read Best Reviews of Schumacher SP-200 2.4W Solar Battery Maintainer Here
I use this one on the battery in my RV in the Mountains. I have used for two trip so far and the battery is alway fully charged when I get to the camper and open up slide out. Great product with no out of pocket expense once you have purchased.Want Schumacher SP-200 2.4W Solar Battery Maintainer Discount?
This does not work to charge my battery in my car because when the ignition is off there is no connection to the battery from the power port (cigarette lighter). Instead I have a spare car battery that I charge with the alligator clips and use with a power inverter to use as a power back up in case of a black out.Have a truck I don't drive every day but alarm drains steady power and after 4 days dead. Not only does that kill a standard car battery but makes it inconvenient to get the truck started. So after my research, went with this solar maintainer because its very simple and well made. No need to worry about overcharging a car battery since its so low of wattage. The one downside or warning is don't start the vehicle with this still plugged in because it suppossedly will backfeed from the alternator and fry the unit. I wish there was a way where I just hardwire this in and not worry about it truly, still researching if a controller will prevent that. By the way mounted on my dash with some doubleback tape.
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