POWOXI 7.5W-Solar-Battery-Trickle-Charger-Maintainer -12V Portable Waterproof Solar Panel Trickle Charging Kit for Car, Automotive, Motorcycle, Boat, Marine, RV, Trailer, Powersports, Snowmobile, etc.

Works for my boat battery

This solar trickle charger works perfect!! I bought it for my motorcycle that I keep in a storage unit during the winter months. The panel is light weight, the power cord is a good length (didn't need to buy the optional extended cord), and it was ready to use right put the box. The only negative thing I would say is that it should have a stand of some sort attached or attachment. That way you have the option to prop it up if you don't use the supplied mini suction cups or mount it on to the wall. I used a piece of pressure treated wood cut in the shape of a triangle (see pics). Screwed the panel to it so it would be at the perfect angle to catch the sun rays. I have it propped up against my storage unit door out the way.

Bought to maintain trickle charge on motorhome battery, simple enough to use, works straight out of the box. Time will tell how well it maintains charge.

I did install it on a dinghy to sustain the battery, So far so good... only comment could be that the cable need to be protected from the sun as it fades with the radiation...

Didn’t work for me easy return