POWOXI 3.3W-Solar-Battery-Trickle-Charger-Maintainer -12V Portable Waterproof Solar Panel Trickle Charging Kit for Car, Automotive, Motorcycle, Boat, Marine, RV, Trailer, Powersports, Snowmobile, etc.

A 12 volt battery can be kept in good condition with this item. During the time I have it in the storage lot, it is attached to my RV. I fixed my solar panel with screws on the wall of my RV, but you can also use suction cups if you want to attach it to the vertical surface of an RV. It can be removed for travel and keeps the battery fresh while waiting for our next camping excursion.

Eloise Moran

| Aug 11, 2020

The battery bank I bought will be used for my dual 12v camper batteries. It is hard to deal with hard winters and wet springs here in the Northeast (PA). As a 71-year-old woman who cannot easily carry her batteries inside during the winter, I installed the charger in February in hopes that it would preserve them through the cold months and into the I can't believe that both of my batteries are still functional. Although there has been heavy snow, ice, and rain for much of the winter, this solar charger has kept my batteries strong 24 hours a day. This is true even if direct sunlight is only present for 4 hours daily. I am so thankful to you for creating a wonderful product that has helped me so much.

Castiel Morton

| Jul 28, 2020

I thought this would be bigger and heavier than I had thought, but I had trouble with my side by side going out with all the lights I have for safety. So this is what I have on my roof now. In order to park in the sun, I try to position it so that it faces the It is probably just a new battery that I need, but I wanted it anyhow. No matter how cloudy the day is, it gives a good charge.

Alec Gonzalez

| Jul 08, 2020

Do not allow your polarity to sway. Initially, the solar panel I received was cracked (thus the 4 star In spite of this, my second panel arrived intact. I use the solar battery charger to charge my Harley Davidson's battery inside a My battery was connected to the charger by using a Schumacher EC-based battery charger The 25' cable connector extension cord (through a connector I mounted on the trailer housing) and WM-45 pump are supplied by Schumacher The 12" Cable Connector for Battery Chargers is used to attach the battery to the charger. In the case of using Schumacher battery connection harnesses and plugging everything in "as is", the polarity will be reversed at the battery, which will cause the battery charger circuitry to detect a short. The battery is electrically isolated (electrically isolated from the device). The blue LED on the charger will not light up when the charger is plugged into the battery (since the As soon as I used a multimeter to identify and correct the reversed polarity from the solar panel, the blue LED now illuminates on the panel and the battery charger charges the battery fully. In response to the reverse polarity issue, several people have commented. Adding my name to the list! I also connected a voltage regulator/charger controller between the solar panel and the battery since the solar charger output varies so greatly (15 volts at full sun to 8 volts at night). Even though I've read that a controller isn't necessary for a solar charging system of such low wattage (I opted for overkill for my own peace of mind), I wasn't comfortable with "double voltage" reaching my battery. As for attaching the solar panel to the side of my trailer using suction cups, I didn't trust them. In order to secure the top part of the panel, I installed bolts/wingnuts that are attached to the top of the panel (since they will simply hold the panel). Although it is still very easy to remove from the trailer, it can still be carried on a road trip.

Ensley Leon

| Jun 20, 2021

I purchased two of them. These units were placed in two of my vehicles that sit outside in the upper northern area of WI, where the weather takes a toll on cars that are left out in the elements. These units were able to withstand the weather and This temperature fits perfectly into the 30 deg F range. Before I used them I had to start the cars every two days and let them run for a couple of hours every night to charge the batteries as the trickle chargers were too spread out to be useful. A very good job was done by them. Even with the V8 sitting out in freezing cold weather for two weeks, I would have a hard time starting it with a regular battery, but with these units, there was plenty of starting power as if you'd just installed a new battery full charged. It also charges on cloudsy days, but not as well as when the sun is out. In the future, I will purchase a few more for my family. This product is quite well built and of good quality.

Salvatore Morton

| Apr 11, 2021

Keeping the battery charged in a car that I do not drive much keeps the vehicle running well during winter.

Oaklyn Boone

| May 01, 2021

I think I ruined my relatively new car battery with this charger. I have an old car that is rarely driven, and I liked the idea of using an AC battery maintainer so that I did not have to remove the battery to keep it charged. Solar chargers liked this one were the perfect solution in that they depended on the sun for power (no electricity needed) and mounted inside my vehicle During the installation, I used alligator clips to connect the charger directly to the battery, verified the charger was providing wattage using a voltmeter beforehand, and parked the car in the sun as much as possible. Each month, I even changed the oil in the car. In my car, I had a brand new (15 month old) Interstate battery, and I simply wanted to use this charger to ensure it was well maintained. Today (probably 3 months after installing the solar charger) I tried starting the car, no go. I tried jumping the battery, no go. I took the car to Valvoline to have it tested and they said it only had 87/500 CCA and that the battery was dead. Although the battery is still under warranty, it looks like I'll need an AC powered charger in order to make use of the battery.

Veronica Delgado

| Sep 14, 2020