|Item Weight||2.5 pounds|
|Product Dimensions||12.4 x 0.8 x 12.4 inches|
|Item model number||50022|
|Manufacturer Part Number||50022|
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Sunforce 50022 5-Watt Solar Battery Trickle Charger
|Price:||$34.92 & FREE Shipping on orders over $49. Details|
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- Features sturdy and durable aluminum frame with amorphous solar cells ; Includes 12V DC plug, battery clamps and mounting hardware for easy installation
- Completely weatherproof for added durability
- Amorphous solar panel works in all daylight conditions; even on cloudy days
- Built-in overcharge/discharge protection
- Maintains and trickle charges 12 Volt batteries for your car, boat, RV, electric fence, deer feeder and more
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From the Manufacturer
Convenient Power That Helps Keep Your Batteries Charged
Sunforce 5 watt 12 volt Solar Battery Trickle Charger
The Sunforce 5-watt Solar Battery Trickle Charger gives you another reason to love the sun - it will help keep your vehicle's battery charged anywhere, anytime.
The ideal choice for cars, trucks, recreational vehicles (RV), tractors, boats, electric fences, and more!
Easy DIY Installation
Just plug this helpful charger into your vehicle's 12-volt lighter socket and position the panel to pick up the most daylight possible. Or, if you prefer, use the included battery clamps to connect the panel directly to the battery. Regardless of how you hook up the battery charger, you'll never get caught off guard without the juice you need to start your vehicle. Mounting hardware also included.
- Completely weatherproof
- Features sturdy and durable aluminum frame for extended outdoor use
- Lightweight, portable & compact
-Includes integrated blocking diode that protects the battery discharge at night
- Amorphous solar technology; charges in all lighting conditions
About Amorphous Solar Power
Solar panels convert sunlight into an electric current, they do not store power. Amorphous solar panels are created by spraying silicon onto glass in very thin layers, and are commonly known as thin film solar panels. This process allows them to be better at generating electricity in all lighting conditions, including cloudy or shady environments. Amorphous solar panels have a maximum operating temperature of -40 to 176 degrees Fahrenheit, requiring virtually no maintenance.
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Top Customer Reviews
Of course, I'm not there 95% of the time so 5 watts is probably adequate. And I don't have to worry about overcharging. I screwed it to a big log in pretty open sun. So far, it has survived, even some small hail.
BTW, I use the power cord from an old vacuum cleaner and a 4-way 12v splitter to distribute power from the battery.
This year, after returning from another 3 week trip (and using the solar charger), my battery started better than it did before my trip to the airport!
I tested the electrical output in full sunlight and got 20V out into a 100 ohm load -> 4 watts which is pretty good.
One thing to consider though is that this product is not very rugged. The solar panel has a plastic frame but the middle is unprotected on the back (and front). So unless you handle it very carefully it is likely to break.
Someone using this on a car dashboard would need some sort of protective carrier (like those insulated pizza boxes) to protect the unit when it was not being used.
------------ Update Dec 2007 ----------------
Panel stopped producing electricity in November. Had to send it in to Sunforce at my expense for warrantee replacement. They promptly tested it and sent me a replacement. One thing I did notice is that the plastic housing on the unit that I returned had developed some small cracks. I am using the unit on my car dashboard to keep my battery charged.
------------ Update Jan 2013 ----------------
The frame around the panel has warped and cracked. As a result the panel no longer reliably charges my battery. This product isn't really engineered for reliable operation on car dashboards - the plastic / frame cannot deal with the extreme temperature changes over time.
leave my boat after sailing for 2-3 hours my 12V LED volmeter reads system
at 11.85 volts and the next day it is charged to 12.80 after receiving sun
for 10hrs. Tops it off - trickle charge as stated.
So, just for kicks, I decided to see just what it could do, even though the FAQ on the manufacturer's site says
"A35: This solar panel is ideal for trickle charging all types of vehicle batteries and power packs. If the battery or power pack is completely drained, use a larger Solar Power Panel (11-1881-0 or 11-1882-8). "
I plugged it into one of the 12v outlets and placed it on the dashboard facing south (I live in the mostly overcast Pacific Northwest). A couple of weeks later when I checked, there was enough juice in the battery to turn on the lights, but not start the engine. Today (end of May), I went to get the RV, assuming I'd have to jump start it from my car. I was pretty amazed when I turned the key and the engine started right up.
Needless to say, I am 100% thrilled with this item.
(And, of course, not everyone may have the same experience as me.)
Most Recent Customer Reviews
Use on boat and have found to be a very good,well constructed productPublished 5 days ago by John McD
It works great.
I use this on my boat when it is in the lake on the lift. I use to have a problem that my boat battery would run down if I did not use it for 3 weeks. Read more
Seems to work fine and puts out about 0.35 amps indirect sun as advertised.Published 18 days ago by LG
A little cheaply made. I especially worry about the plasic mounting tabs deteriorating in the sun and letting this thing fly away when it's windy. Read morePublished 22 days ago by Ladybird
Extremely poor product.. hooked it up to my RV for two solid, I could not get reading in direct sunlight, the unit would not produce any current at all..Published 23 days ago by Carl Guy
these things keep my battery good and charged in the winter. use them on my 4wheeler during hunting season.Published 25 days ago by jamie
I attached it to my boat battery a month ago and it's kept the battery fully charged since then. I only use the boat once a week or two so it's critical that the battery stay... Read morePublished 1 month ago by Amazon Customer