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Schumacher Solar Battery Charger and Maintainer- 4.8 W, 12V Schumacher Electric Corp.

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Schumacher SP-400 4.8W Solar Battery Maintainer – Water Resistant – Maintains Motorcycle, Power Sport, Car, Truck, Boat, and RV Batteries – Amorphous Solar Technology

Visit the Schumacher Electric Store

4.4 264 ratings

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$61.91 with 22 percent savings

List Price: $79.76

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Purchase options and add-ons

Brand	Schumacher Electric
Material	Amorphous
Item Weight	4 Pounds
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

About this item

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

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Schumacher SP-400 4.8W Solar Battery Maintainer – Water Resistant – Maintains Motorcycle, Power Sport, Car, Truck, Boat, and

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WARNING: California’s Proposition 65

From the brand

Lithium

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From the manufacturer

Schumacher SP-400 4.8W Solar Battery Maintainer

Harness Solar Power for Your Vehicle

Trickle Charge Your 12V Battery with the Schumacher SP-400

Use the power of the sun to generate enough power to trickle charge your 12V power sport, motorcycle, car, or boat batter. The Schumacher SP-400 4.8W Solar Battery Maintainer helps optimize the health of your battery, maintain a full charge, and extend your battery’s life.

Maintain the Health of Your 12V Batteries with the Power of the Sun

EASY TO USE

Simply connect the color coded clamps to the battery or plug the 12V DC adapter into the vehicle’s 12V DC accessory outlet and position the unit.

AMORPHOUS SOLAR TECHNOLOGY

Employing amorphous solar technology allows the SP-400 to absorb more light than other solar panels.

WATER RESISTANT

A bit of rain won’t harm the SP-400 thanks to water-resistant construction.

TAKE IT OFF GRID

A SP-400 solar maintainer is the ultimate off-grid accessory for anyone who needs to maintain a 12V battery without access to the electric grid.

YOU CAN RELY ON SCHUMACHER

KEEP IT ROLLING WITH SCHUMACHER’S LINE OF SOLAR PRODUCTS

Professional mechanics and automotive enthusiasts trust Schumacher Electric to provide high-quality and innovative products. Since 1947, Schumacher has been designing and producing industry-leading power conversion technology. Schumacher’s current range of solar products feature the latest technology and rugged construction for reliable power wherever you are.

POWER SPORTS RIDERS

A solar maintainer is an easy way to ensure your power sport batteries are ready when you are.
OUTDOOR ENTHUSIASTS

Bring the SP-400 along on your next hike or camping trip to ensure your car’s battery stays charged.
FARMERS AND RANCHERS

Power deer feeders and electric fences with a 12V battery maintained by the SP-400.

1 POWER SPORTS RIDERS 2 OUTDOOR ENTHUSIASTS 3 FARMERS AND RANCHERS

Quick-Start Instructions

Compare Schumacher Solar Power Maintainers

	Schumacher SP-400	Schumacher SP-200	Schumacher SP-1500	Schumacher SP-600 See Details
Customer Reviews	264	1,059	596	6
Price	$61.91	$25.85	$139.99	—
Watts	4.8W	2.4W	15 Watts	6 Watts
Voltage	12V	12V	12V	12V
Waterproofing	Water resistant	Water resistant	Water resistant	Water resistant
Charge Control Included	No	No	SPC-7A	No
Connector Types	12V DC and battery clamps	12V DC and battery clamps	12V DC and battery clamps	12V DC

Product 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).

Product information

Technical Details

Brand

‎Schumacher Electric

Material

‎Amorphous

Item Weight

‎4 Pounds

Connector Type

‎Clamp

Included Components

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

Maximum Voltage

‎12 Volts

Maximum Power

‎4.8 Watts

Manufacturer

‎Schumacher

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

Additional Information

ASIN

B005MVB524

Customer Reviews

4.4 264 ratings

4.4 out of 5 stars

Best Sellers Rank

#207,832 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
#787 in Solar Panels

Date First Available

September 13, 2011

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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What's in the box

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

Compare with similar items

	This Item Schumacher Electric Schumacher SP-400 4.8W Solar Battery Maintainer – Water Resistant – Maintains Motorcycle, Power Sport, Car, Truck, Boat, and RV Batteries – Amorphous Solar Technology	Recommendations Voltset VOLTSET 20W Solar Panel Battery Trickle Charger Maintainer + Upgrade 10A MPPT Charge Controller + Adjustable Mount Bracket, 12V Waterproof Solar Panel Trickle Charging Kit for Car RV Boat Motorcycle	dummy SUNAPEX 20W Solar Car Battery Trickle Charger & Maintainer, 12V Waterproof Solar Panel Trickle Charger, Portable Solar Panel Kit for Car, Boat, RV, Trailer, Motorcycle, Snowmobile, etc	dummy Schumacher Electric Schumacher SA1589 12V 5W Portable Solar Automotive Battery Trickle Charger – 1A USB port – For Maintaining Motorcycle, Power Sport, Car, Van, and Boat Batteries	dummy Voltset 30W Solar Panel Battery Trickle Charger Maintainer + Upgrade 10A MPPT Charge Controller + Adjustable Mount Bracket, 12V Waterproof Solar Panel Trickle Charging Kit for Car RV Boat Motorcycle	dummy Sunway Solar Car Battery Trickle Charger & Maintainer 12V Solar Panel Power Battery Charger With Cigarette Lighter Plug Battery Clamp For Car Automotive Motorcycle Boat Marine Snowmobile Watercraft RV
	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	-22% $61.91 List: $79.76	$49.99	$49.99	-9% $41.27 Typical: $45.47	$66.99	$22.99
Delivery	Get it as soon as Saturday, May 11	Get it as soon as Saturday, May 11	Get it as soon as Saturday, May 11	Get it as soon as Saturday, May 11	Get it as soon as Saturday, May 11	Get it as soon as Saturday, May 11
Customer Ratings	4.4264	4.5316	4.31,557	3.430	4.5316	4.26,199
Value for money	4.4	4.4	4.0	—	4.4	4.1
Easy to install	4.5	4.8	4.5	—	4.8	—
Weatherproof	—	5.0	—	—	5.0	3.9
Quality of material	—	4.4	—	—	4.4	4.1
Sold By	Amazon.com	Voltset	SUNAPEX	Amazon.com	Voltset	Eco Home
power source	—	Solar Powered	Solar Powered	Battery Powered,Corded Electric	Battery Powered	Solar-Powered
connector type	Clamp	SAE to SAE	SAE	USB	SAE	—
material	Amorphous	Monocrystalline Silicon, Aluminum, Tempered Glass	ETFE	Monocrystalline Silicon	Monocrystalline Silicon, Aluminum	Glass
wattage	—	20 watts	20 watts	—	—	1.5 watts
weight	3.96 pounds	4 pounds	—	0.01 ounces	—	—

Looking for specific info?

Customer reviews

4.4 out of 5

264 global ratings

How customer reviews and ratings work

Customers say

Customers like the quality, charging, and ease of use of the solar panel. For example, they mention it works well, charges quickly, and is worth the money spent. Some appreciate the simple installation and ease to use. That said, opinions are mixed on battery charging.

AI-generated from the text of customer reviews

35 customers mention31 positive4 negative

Customers like the quality of the solar panel. They mention that it works well, is well worth the effort, and provides enough of a boost to the battery everyday.

"Excellent ... Couldn't be easier to use and works as intended...." Read more

"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." Read more

"...Guess I should have read the description better.Good quality part, does what it is supposed to do...." Read more

"...This panel provides enough of a boost to the battery everyday that I feel like I can relax a little more rather than stress out about keeping my..." Read more

6 customers mention6 positive0 negative

Customers are satisfied with the charging of the solar panel. For example, they mention it charges just fine, has great output, and quickly gets a charge on it. Some say it's an excellent charger and charges the battery up so quick.

"...It charges just fine even though it is not in direct sunlight...." Read more

"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." Read more

"...was immediately testing it and said it had great output and quickly got a charge on it...." Read more

"...It charged the battery up so quick. He really was impressed with it." Read more

6 customers mention6 positive0 negative

Customers find the solar panel worth the money spent. They also say it's a good purchase for those just starting out.

"...Good purchase, I recommend it for those who are just starting out with using solar. I've charged batteries for my cars and my golf cart...." Read more

"...For the price, it's worth it...." Read more

"This was a great purchase and great price. The battery use to be dead after two days of not driving my truck during the winter...." Read more

"Worth the money spent" Read more

5 customers mention5 positive0 negative

Customers find the installation and use of the solar panel simple. They mention that it works great and provides a charge for their battery even on the cloudiest days.

"Excellent ... Couldn't be easier to use and works as intended...." Read more

"Simple installation, literally plug it in to the cigarette lighter (Is it even called that, anymore?) And set the charger on the dash...." Read more

"Leaving it installed has been no issue and with short distance urban driving the battery never has a problem." Read more

"easy to use, and pics up charge for our battery even on the cloudiest/rainiest days!" Read more

15 customers mention9 positive6 negative

Customers are mixed about the battery charging of the solar panel. Some mention it does a great job of keeping their truck battery charged, while others say it doesn't keep the battery charged at all.

"...And set the charger on the dash. Maintains the battery charger perfectly." Read more

"I doesn't keep the battery charged, at all. I live in the sunny southwest and have the charger facing south, with a clear view of the sun all day...." Read more

"...The two worked perfectly and kept the battery properly charged while I was away for several months...." Read more

"This unit works great during the day and even puts out a voltage at night...." Read more

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Top reviews from the United States

There was a problem filtering reviews right now. Please try again later.

Mindi O.

Works Great - We Are Using It on the Dash Behind the Sun Shades

Reviewed in the United States on July 27, 2014

Verified Purchase

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.

27 people found this helpful

Helpful

Ronald Joy

Well worth the money

Reviewed in the United States on April 30, 2024

Verified Purchase

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.

Helpful

Vova

good.

Reviewed in the United States on June 25, 2013

Verified Purchase

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.

7 people found this helpful

Helpful

Kindle Customer

Great product, great value.

Reviewed in the United States on July 5, 2021

Verified Purchase

Simple installation, literally plug it in to the cigarette lighter (Is it even called that, anymore?) And set the charger on the dash. Maintains the battery charger perfectly.

2 people found this helpful

Helpful

ALEX STANLEY

Just what I Need

Reviewed in the United States on September 29, 2023

Verified Purchase

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

Helpful

Jeep Crud

Good Quality, OEM Part.

Reviewed in the United States on December 28, 2018

Verified Purchase

It was bigger than I expected. Guess I should have read the description better.
Good quality part, does what it is supposed to do. Be sure you buy the part that regulates the charge so the battery doesn't over charge.
Recommend I'm using it to keep a vehicle battery charged that sits for weeks on end. And I have used it camping to charge my cell phone with a lighter adapter.

2 people found this helpful

Helpful

ladycrete

Doesn't work.

Reviewed in the United States on September 24, 2016

Verified Purchase

I doesn't keep the battery charged, at all. I live in the sunny southwest and have the charger facing south, with a clear view of the sun all day. Total waste of money.

5 people found this helpful

Helpful

Ken

Product works well

Reviewed in the United States on February 24, 2019

Verified Purchase

The car sits in a parking lot at college for long periods of time without being driven so I would have battery problems frequently. I have had no problems since the installation of this battery charger 6 months ago. Plugging in into the power outlet in the car didn't work though. I had to wire it directly to the battery then unplug it before I start the car.

Helpful

Top reviews from other countries

Translate all reviews to English

Alvaro Cerecedo

Tardo en llegar

Reviewed in Mexico on March 18, 2024

Verified Purchase

Es muy grande se necesita espacio y no es para batería de gel

Translate review to English

Works well. Keep my car from dying due to low battery.

Reviewed in Singapore on November 4, 2020

Verified Purchase

Works well, keeps my car from dying from the drain in current due to my video camera. Could have come with a small flip out stand to prevent it from having water pooling on it during rain. Comes with super long wires. Good quality but seems a bit expensive. Wattage also seems to be low but this is meant to maintain, not charge. Could have come with rubber feets too to prevent scratching my car. Solved this problem by buying rubber feets and sticking it myself. Recommended to use with charge controller to avoid frying your battery.

Edwin Gutierrez

2 PACK es mentira

Reviewed in Mexico on September 7, 2018

Verified Purchase

El producto llego solo el panel solar mas no el control cuando intente hacer la reclamacion por ser un producto de AMAZON EEUU no me pueden ayudar con el envio del producto faltante y me sugieren que lo regrese y que lo vuelva a comprar
Decepcionado tuve que comprar el controlador aparte
Muy Mal de verdad

One person found this helpful

Translate review to English

King Quan

Great Product, No charge controller!

Reviewed in Canada on June 12, 2018

Verified Purchase

Doesn’t come with charge controller! Just the panel and some wires. Reccomend longer wires as well.

One person found this helpful

Frank

Blown fuse

Reviewed in Canada on June 21, 2022

Verified Purchase

Do not use cigarette socket it will blow your fuse.

See more reviews

Amazon Prime includes:

Schumacher SP-400 4.8W Solar Battery Maintainer – Water Resistant – Maintains Motorcycle, Power Sport, Car, Truck, Boat, and RV Batteries – Amorphous Solar Technology

Purchase options and add-ons

About this item

Frequently bought together

Similar items that may deliver to you quickly

From the brand

Lithium

Jump Starters

Portable Power

Battery Chargers

Wheel Chargers

Ride on Toys

From the manufacturer

Harness Solar Power for Your Vehicle

Trickle Charge Your 12V Battery with the Schumacher SP-400

Maintain the Health of Your 12V Batteries with the Power of the Sun

EASY TO USE

AMORPHOUS SOLAR TECHNOLOGY

WATER RESISTANT

TAKE IT OFF GRID

YOU CAN RELY ON SCHUMACHER

KEEP IT ROLLING WITH SCHUMACHER’S LINE OF SOLAR PRODUCTS

POWER SPORTS RIDERS

OUTDOOR ENTHUSIASTS

FARMERS AND RANCHERS

Quick-Start Instructions

Compare Schumacher Solar Power Maintainers

Product Description

Product information

Technical Details

Additional Information

Warranty & Support

Feedback

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What's in the box

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Looking for specific info?

Customer reviews

Customers say

Top reviews from the United States

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