Average Reviews:
(More customer reviews)I purchased 6 of these for a backup system for my home. Two Northern units and 4 Sunforce units all 15 watt. ( these are the exact same units btw, northern's are cheaper). With two inverters, a 2500 watt, and a 300 watt pure sinewave for computers and such. Hooked through a 7 amp charge controller to a pair of 110 amp hour deep cells in parallel for a total of 220 amp hr's.
I first hooked two panels up to see how they did, they worked well in very low light but couldn't ever get the batteries to "full" on the controller. I then hooked up a third panel and that gave enough to bring the batteries to full after a full day. With six panels hooked up, it will bring the batteries to "full" in a very few hours from a 30% drained condition.
These units are less then optimally placed and rarely get full sun, but do very well even without that. Two panels in full sun may very well have been able to bring the batteries to "full" but location is a problem for me. One other product of note is the P3 international "Kill A Watt" electrical useage meter. Doing a survey of electrical useage in my house to get ready for this project was an eye opener to say the least.
Great panels, at a good price, that do what you pay for...all you can ask for.
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Product Description:
The Sunforce 50032 15 Watt Solar Battery Charger gives you another reason to love the sun--it'll help keep your vehicle's battery charged. Just plug the this helpful 15-watt battery charger into your vehicle's 12-volt lighter socket and position the panel to pick up the most daylight possible. And with the built-in blocking diode technology, this charger is designed to protect against battery discharge at night. You can also use this device to maintain the charge on any 12-volt battery for clean, silent operation of various electronics, such as deer feeders and landscaping pumps. The 50032 features a built-in ultra-bright blue LED charging indicator, and is a great choice for automobiles, recreational vehicles, tractors, all terrain vehicles, boats, electric fences, telemetry and more--and it is even effective on cloudy days. This battery charger is made of durable ABS plastic and amorphous solar cells, measures 15.5 x 2.5 x 41.5 inches (WxHxD), and has a maximum temperature range of -40 to 176-degrees Fahrenheit. The manufacturer recommends using the Sunforce 60012 7 Amp Charge Controller in tandem with this charger for optimal results.
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