Renogy 10W 12V Portable Solar Panel Battery Maintainer Trickle Charger with Lighter Plug, Alligator Clips, and Battery Cables
$25.17
- Easy to use DC adaptors for direct battery connection (cig lighter, alligator clips, ring terminal, SAE connection).
- Charges 12 Volt batteries with the power of the sun.
- Works with boats, SUVs, RVs, electric fences, accessory batteries, and more!
- High-efficiency solar panel to charge in all daylight conditions.
- Built-in safety protection, plug-in 24/7 to battery.
- Maintenance free and easy to install.
Specification: Renogy 10W 12V Portable Solar Panel Battery Maintainer Trickle Charger with Lighter Plug, Alligator Clips, and Battery Cables
| Product Dimensions | 13.19 x 9.29 x 0.2 inches |
|---|---|
| Item Weight | 14.2 ounces |
| Manufacturer | Renogy |
| Item model number | Solar Panel Battery Maintainer Trickle C |
6 reviews for Renogy 10W 12V Portable Solar Panel Battery Maintainer Trickle Charger with Lighter Plug, Alligator Clips, and Battery Cables
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JR –
I only have one complaint about this panel, the 12v accessory plug was too long to fit in my ’92 Chevy C2500’s ashtray outlet. Because of how excellent the panel works I still think it deserves a 5 star score. I’ll just order a shallower replacement plug from Amazon and wire it to the extension. I’ll post a link after I get one.
The cold nights were draining my 12v truck battery so I needed something to keep it charged till I can afford to replace it. I leave this on the winshield connected directly to the battery when she’s parked. I haven’t had a weak start since I started using the panel. We had a hard frost on a night that I forgot to plug it in and the battery died trying to start in the morning. It takes a big battery with good juice to turn that 454 over cold. 10 minutes connected, in partial shade, the battery cranked her over, no problem. I’ve left this panel on the outside of the winshield through rain storms, snow storms, and freezes and they don’t seem to hurt it. It will get a little damp in the back but that hasn’t effected it’s performance. The 10 watt is a solid panel that does it’s job well, even on an old battery.
face but! k –
My 4runner battery drains down a little from lack of use so I got this to keep it topped up. I have it on the dash so maybe there are some losses from the glass, plus it only gets sun a few hours a day and right now it is winter sun coming in at a low angle. Knowing that is how I wanted to use it, I got a 10 watt panel thinking that would be plenty considering a lot of maintainers are only a couple watts. But it doesn’t seem to be doing much. I fully charged my battery a couple days ago on my 110 charger and after two days my battery read 12.43 volts. I don’t know if it will keep it there, or if it will keep dropping. I put my multimeter on the panel itself and see 21 volts (optimal volts according to specs is 18V and .56 Amps and short circuit is 23.5V so maybe that is within spec although 21 Volts seems higher than ideal). But for current I am only seeing .12 Amps on a nice sunny Colorado winter day. That is only 2.5 watts total. I moved the panel outside the window to see if that would make a difference and the amps stayed the same so it isn’t window tinting which I don’t think my front winshield has anyway. I am surprised that people with even smaller panels say they keep their batteries topped up but I may have to upgrade this 10 watt panel to something bigger. It wasn’t too expensive so no big deal but still kind of disappointing. If anyone has different feedback on how theirs works, I’d be interested to hear it.
The quality looks and feels fine except the suction cups don’t stay put. I tried mounting on the window and both times it fell down. I wouldn’t trust them but you could use wire to secure it or something. This isn’t something you would want to leave outside over the winter so it really isn’t weather proof but I never intended to do that. I trust the Renogy name and figure this had to be as good as the other brands and cheap chinese ones, but still I’m not sure it will work to keep my battery topped up. I have no intention of moving the panel around to get max sun or anything like that. Renogy does say there is backward flow blockage so it should not run down the battery when not in direct sun or at night, but 2.5 watts for a few hours a day may not been enough to help me.
Robby –
The description says this item is “weatherproof for outdoor durability,” and the images even show the unit with water on it. However, the warning in the instructions says “keep the solar charger away from water.” The unit is clearly designed to be adhered to the inside of a windshield. The housing is made of canvas which is hard to makeout in the images. It does not appear to be made for outdoor use at all. If you are looking for something which can be mounted outside, this is not the product. It does come in nice packaging and is an attractive looking unit. It also has a good selection of wiring options, and it would probably work well if stuck to the inside of a window. It simply should not be marketed for outdoor use.
Rod Ahlskog –
I bought this to maintain the battery on my truck which is often parked for several months between uses. DOES NOT WORK! It actually seems to drain the battery as it discharged faster with the solar charger plugged in.
MrWhite –
I’ve been using the Renogy 5W Solar Battery Maintainer for the past two weeks while on vacation. There are a few things that I’ve come to appreciate about the charger. I like the quality of the product, the panel itself seems much more rugged than I anticipated and the gauge of the wires seems adequate. The suction cups are VERY strong and come with an extra pair. I like the choices of three different contacts for the charger as well. While I’ve only used the loop connection so far, I like the versatility the clamps and 12V connections imply. My only negative critique of the product that I have is the cables being some 4 to 5 feet long, are shorter than I’d like to take advantage of the moving Earth. Perhaps an extension to better reach the sun, although at a wattage loss I’m sure. At any rate, top notch product, and no regrets in my purchase.
GATO –
Update Jan 2021, purchased ~ 6 months ago, the “frame” that houses the solar panel is disintegrating. For something whose job is to be exposed to the sun it’s not holding up at all. Cheap material, don’t buy.
As I posted earlier with a 5 watt version, my 2006 Chevy Silverado truck windshield reduces the current from about 460 mA (in the open) to about 187 mA (behind front windshield). I knew about this before I bought the unit and that’s why I purchased this 10 watt to replace my 5 watt panel. I may add in the 5 watt panel depending what the battery looks like 4 weeks from now. The truck has about 25 mA parasitic draw (about 0.6 amp/day). I figure the 10 watt panel will give me about 1.1 amps/day. My 2004 Prowler Trailer doesn’t have this sunlight filter issue, not sure about other vehicles. Something to keep in mind when buying panels for your application. Also, the 10 watt panel plug that goes in the cigarette lighter port only fits my AUX port (similar shapes but the AUX is deeper) as the panel’s plug is longer than normal. No problem on my truck since the cigarette port and AUX port are located near each other but not all vehicles have a AUX port.