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Schumacher Electric

Schumacher Electric Solar Battery Maintainer, SP-400, Water Resistant, Amorphous Solar Technology, 4.8 Watts, 12 Volt, for Motorcycle, Power Sport, Car, Truck, RV, and Marine Batteries

  • Based on 279 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Sep 6
Order within 22 hours and 26 minutes
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Features

  • TRICKLE CHARGE: Delivers 4.8-watt trickle charge to boat, car, motorcycle, ATV, snowmobile, truck, RV, and other 12V batteries to maintain your 12V battery
  • EXTEND BATTERY LIFE: Maintaining your 12V batteries with the SP-400 optimizes the health of the battery and extends battery life
  • SOLAR-POWERED: Solar panel battery maintainer utilizes amorphous solar technology to convert sunlight into power
  • NO ELECTRICITY NEEDED: Charge the maintainer by placing it panel-side up in an area exposed to daylight such as a dashboard or the hood of a vehicle
  • THIN-FILM TECHNOLOGY: The panel absorbs a larger spectrum of light than other solar panels, allowing it to work under low-light and cloudy conditions
  • EASY TO USE: Simplified, environmentally safe design offers plug-and-play usability and requires minimal maintenance; 96-inch cable allows you to position the unit nearly anywhere on your vehicle
  • WATER-RESISTANT: The unit is water resistant to withstand light rain or water splashes
  • POWER FARM AND RANCH TECH: Use the SP-400 to power electric fences and deer feeders in remote locations on your property
  • IN THE BOX: SP-400 4.8 W Solar Battery Maintainer, 12V DC adapter, clamp adapter, (4) mounting screws, and user manual

Description

Capture the limitless power of the sun to trickle charge your vehicle’s 12V battery with Schumacher’s SP-400 4.8W Solar Battery Maintainer. A solar power battery maintainer ensures a healthy, fully charged battery wherever you are, without the need for an electrical outlet or battery pack. Ideal for extending the battery life of 12V lead-acid batteries, the SP-400 solar battery maintainer can be used to maintain the battery of your motorcycle, snowmobile, ATV, boat, car, truck, RV, or other vehicle. Employing amorphous solar technology, the SP-400 even works in cloudy conditions and built-in water resistance means a stray rain shower won’t damage the unit. There are two ways to hook-up the SP-400 to your vehicle battery. Use the battery clips to connect it directly to your battery or plug the 12V plug into your vehicle’s 12V DC accessory outlet. The Schumacher SPC-7A Charge Controller is recommended for extra overcharge protection (sold separately).

Brand: Schumacher Electric


Connectivity Technology: DC Barrel


Connector Type: Clamp


Included Components: SP-400 4.8 W Solar Battery Maintainer, 12V DC adapter, clamp adapter, (4) mounting screws, and user manual See more


Color: Black


Input Voltage: 120 Volts


Wattage: 4.8 watts


Number of Items: 1


Material: Amorphous


Output Voltage: 12 Volts


Manufacturer: ‎Schumacher Electric


Brand: ‎Schumacher Electric


Model: ‎SP-400


Item Weight: ‎3.96 pounds


Product Dimensions: ‎14.41 x 13.58 x 0.51 inches


Country of Origin: ‎China


Item model number: ‎SP-400


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎SP-400


Voltage: ‎12 Volts


Wattage: ‎4.8 watts


Date First Available: September 13, 2011


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Sep 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Solar panel intended for charging car batterys 12v
Schumacher is an old name in automotive gadgets and thus I would expect a nice product if their name is on it. They make two sizes of solar panel a smaller one that puts out less wattage and this one. For the price difference I'd get the larger panel since it should do better on less than full sun days, the larger panel should be able to make more juice on a cloudy day than the smaller one just because of the size. Be aware you should also invest in the controller SP7A if your solar charger will be running unattended for long periods. The controller prevents discharge and overcharge situations if you leave it unattended for long periods. You may also want their cable extender if you need to place the solar panel any distance from the vehicle to catch the sun or prevent theft. I'm lucky that my house faces the optimum compass direction for solar panels but the longer cables give you quite a lot of leeway in where to place the panel. I will probably eventually have the panel mounted on a pole or to the side of my roof to keep the local dirtbags that steal anything that isn't nailed down from taking it but for now I've got a camera aimed at it to keep everyone honest. I haven't had much need to use it yet but I'll be retiring my gas vehicle soon and it will get much more use at that point. If you don't have convenient electrical outlets outside a setup like this will keep your battery charged as long as you get enough sun during the daylight hours. ... show more
Reviewed in the United States on January 7, 2025 by S. McCartin
    • Sunshine Ready
Keeps the rarely used pick up ready to go anytime!
Reviewed in the United States on April 2, 2025 by maxicat
    • good.
works great and charges my car fine. a bit bulky and would be nice if it had some sort of suction cups and place in the windshield glass.
Reviewed in the United States on June 25, 2013 by Vova
    • Work Great
Yeap it charges my spare car battery w/extra charge controller.
Reviewed in the United States on November 13, 2024 by Vegas OBie
    • An exact replacement for a trailers winch battery battery charger
This was an exact replacement (by size, capabilities, and brand name) for a broken winch battery solar charger on one of our trailers. Works just fine👍.
Reviewed in the United States on July 24, 2024 by dan solt
    • Well worth the money
Excellent ... Couldn't be easier to use and works as intended. NOTE: ALWAYS "connect" your solar panel to controller LAST and "disconnect" the solar panel from controller FIRST.
Reviewed in the United States on April 30, 2024 by Ronald J.
    • Works Great - We Are Using It on the Dash Behind the Sun Shades
We drive a truck over the road and are required to have a personal vehicle parked at our company HQ. When we go home we drive our truck home and use our other vehicle to get around. This causes us to leave our '98 Dodge Durango (parked in Georgia) for 3 - 6 weeks at a time without starting it. When we do we use it to go get something to eat and back to work so it does not get driven enough to give the batteries a good charge. We purchased this, along with the Schumacher SPC-7A 12 Volt Solar Charge Controller, after having to jump start our vehicle after leaving it for 8 weeks. We use thin window shades (with Fairies on them) and put the Solar Charger on the dash. It charges just fine even though it is not in direct sunlight. After being parked for 4 weeks, we put a multi-meter on the battery and it read 12.3 volts..started right up. Now we are thinking about buying another one for our Car in Florida! Hope this helps. ... show more
Reviewed in the United States on July 27, 2014 by Mindi O.
    • Just what I Need
Hooked up to battery on trailer for about 4 hours on a dead battery, gave some juice to the battery. I just need to leave longer. Probably 3 days to fully charge. Other wise works Great
Reviewed in the United States on September 29, 2023 by ALEX STANLEY

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