Model # 58012

Internet #203241468

Store SO SKU #397288

Coleman 2-Watt 12-Volt Solar Battery Maintainer


2-Watt 12-Volt Solar Battery Maintainer

$16.77 /each

Frequently Bought Together

Product Overview

The portable Coleman 2-Watt Solar Battery Maintainer offers an ideal way to maintain the batteries of cars, SUVs, boats, tractors and more. This unit is completely maintenance free and easy to install. Made with durable ABS plastic and amorphous solar cells, this solar panel charges in all daylight conditions, even on cloudy days. The panel plugs directly into your cigarette lighter and the suction cups allow for easy mounting of the panel to a window or a dashboard. The complete kit includes: 2-Watt solar battery maintainer, 7.5 ft. wire, 12-Volt DC plug, suction cups for easy mounting, and battery clamps. It has a temperature range of -40 to 176 Degree F.

  • Made of durable ABS plastic and amorphous solar cells
  • Excellent for maintaining the batteries of cars, boats, SUVs, tractors and more
  • Amorphous solar panel works in all daylight conditions, even on cloudy days
  • Maintenance free / easy installation
  • For indoor use: inside the dash of a vehicle or by a window indoors as it is not waterproof
  • Plugs into cigarette lighter with included battery clamps
  • Mounts on windshield with included suction cups
  • Temperature range: -40 Degree to 176 DegreeF
  • Includes: alligator battery clamps, 12-Volt DC plug, 7.5 ft. of wire, suction cups to mount panel onto windshield
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

Could I use this panel to operate a 12vdc fan that draws .6amps?

Would like to set up this little computer fan on my desk by the window.
Asked by: ComputerFan
Not likley since the package states "Up to" 133mAh so no where near that current
Answered by: mwk
Date published: 2017-02-24

Can this setup overcharge my 12v battery?

Asked by: Mac
No, it has a built in battery overcharge protector.
Answered by: Rich
Date published: 2016-11-19

Can you leave this charger on the battery all winter even if the battery is out of the car and in the basement or garage?

Asked by: stretch
Yes you can, but why would you. The solar powered maintainer is for situations where you don't have an electrical outlet nearby. So if you going to put it in a garage or basement, and there is an electrical outlet nearby, just purchase a regular trickle charge battery maintainer, which works better, there is no need for a solar model. Sears makes a great corded trickle charge 12 volt battery maintainer for about $15.00.
Answered by: Rich
Date published: 2016-11-19

Can I use this 2-Watt 12-Volt to maintain the battery in my car?

We owned a Toyota Prius that we park outside. This vehicle is sometime not used for three or four weeks at a time. Can this 2-Watt solar battery maintainer keep the car battery charged during these periods? What are the dimensions of this solar panel? Can the battery be damaged by over charging it with a 2-watt trickle solar charger device?
Asked by: Guido
Yes, that is what it is designed for. But remember, it will not recharge a low battery. It is designed to only maintain the current charge on a cart 12 volt battery.
Answered by: Rich
Date published: 2017-02-19
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Customer Reviews

2-Watt 12-Volt Solar Battery Maintainer is rated 3.9 out of 5 by 18.
Rated 5 out of 5 by from Seems to be built well, Works great for keeping a small 12 volt battery charge up, use for sever... Seems to be built well, Works great for keeping a small 12 volt battery charge up, use for several weeks now no problem
Date published: 2017-01-11
Rated 5 out of 5 by from Great as a car battery trickle charger I bought one of these for the one car that has a lighter socket that's alive when the engine is off & it has kept that battery alive & well. The other two vehicles without it I've had to replace both batteries. I'm buying two more of these & I'm rewiring the lighter/12vDC power sockets directly to the battery. This is worth the cost & works well. It comes with a long wire that plugs into either the 12vDC outlet plug or into two alligator clips. It's easy to plug in & place it up in my rear window while the car's not in use. If you leave your car/vehicle at a long term parking lot get one of these & plug it into your cigarette lighter socket. It will give you a nice live battery when you return in a month or many months. Free power from the sun!
Date published: 2013-05-25
Rated 5 out of 5 by from solar battery maintainers This product has preformed as advertised so far, haven't used it for a prolonged time yet, but have used them on three vehicles for as long as three weeks, with no problems. Only problem i had was that i had to order them on the internet, the store couldn't order them for me to be delivered to the store unless i used a credit card. I only use a pre paid credit card, so if i load the money on the card, i might as well order them from and have them delivered at home.
Date published: 2016-08-17
Rated 5 out of 5 by from Great inexpensive trickle charge for a spare riding mower battery I have a spare riding mower in a shed that doesn't have 110 volts so a regular battery trickle charger is out of the question. The mower gets used so little the battery usually discharges, then I have to remove it and bring it to the bench for charging. I picked up one of these solar battery maintainers and mounted it behind some plexiglass under the shed overhang in a way that rain, etc cannot get to it but it still collects ample sun light. Kind of like a vehicle windshield. The solar panel generates enough power, even if it isn't in direct sun light, to maintain a charge on the mower battery. So far I've gone as far as 3+ weeks without starting, then I disconnect the alligator clips from the battery posts and the mower starts right up. Time saved and aggravation eliminated. BTW: Home Depot had the best price for a solar charger like this and the only one I saw that produced a full 2 watts!
Date published: 2016-06-24
Rated 5 out of 5 by from Exactly what I wanted Bought this to keep my portable generator battery topped off to prolong battery life and always have it charged in an emergency. Mounted this inside my garage against a south facing window. Even on an overcast day, voltmeter showed over 20 volts produced at the alligator clips, and it's keeping my generator voltage up near 13 volts.
Date published: 2013-11-08
Rated 2 out of 5 by from Needs more output power It appears that the solar maintainer does not put out enough power to maintain a starter battery with a battery isolator and an auxiliary deep cycle battery connected to the engine's charging circuit. I have a battery isolator with an auxiliary deep cycle battery connected to my 1988 Ford F150 charging system. I have to disconnect the starter battery's negative cable and attach the solar maintainer to that battery in order to obtain voltage maintenance at around 12.76 volts. If I leave the (OEM) negative starter-battery cable connected to the starter battery and also connect the solar maintainer to that battery (and also leave the auxiliary battery connected to the battery isolator), the battery's voltage drops to 12.56 volts, and it seems it would likely continue to keep dropping. Evidently, it seems the truck's electrical system provides a steady, slow drain on the starter battery when connected like that, and the solar maintainer appears not to have enough power to overcome that slow drain. (I leave the solar panel mounted at the bottom of the passenger-side window to get maximum sunlight in the mornings with the truck (with cab-over camper) facing north. The panel's wire is threaded out the window and through a gap at the back of the hood and up to the starter battery. Leaving it like that seems to provide the least rigmarole for when I want to drive the truck; I only need to connect and disconnect cables and wires to drive the truck, and there is excellent visibility through the passenger-side window.) For diagnostic purposes I tried measuring the resistance in that battery-cable circuit with both the starter battery and the auxiliary battery disconnected. At first the digital multimeter shows infinite resistance. Then after several seconds, the meter displays readings that "flop" around in the vicinity of 3 mega-ohms. It also seems that that cable circuit acts as a large capacitor because it takes a while for the residual-voltage readings to drop down to the vicinity of 0.4 mili-volts and I have to short the battery cables together to get the voltage to drop that far. I also suspect that the auxiliary battery is not the major cause of the starter battery's slow discharge when all cables and the solar maintainer are connected because the auxiliary battery's rate of discharge is much slower than that of the starter battery. The starter battery is a brand new battery.
Date published: 2016-05-05
Rated 2 out of 5 by from Product is good but staff at Brenham Store need training on how to order products! Did not try item yet looks good. See store review.
Date published: 2016-08-16
Rated 4 out of 5 by from Solar trickle charge The Solar charger works as intended, and well at that. Results will vary from Location to Location, as well as Region to Region. The package states 2W output under "ideal" conditions, which roughly translates as in the middle of a field along the equator, but that is true for almost all solar panels. My area is hills and mountains, which block direct sun for several hours in the early part of the day and makes for an early sunset. 10 to 20 volt average sounds about right for this trickle charger panel under my common conditions.
Date published: 2015-02-18
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