HQST Solar Panel 50 Watt 12 Volt Polycrystalline Portable, High Efficiency Module Off Grid PV Power for Battery Charging, Boat, Caravan, RV and Any Other Off Grid Applications

I am using this 10 watt solar panel in series with a DC voltage regulator to keep the battery in my rarely driven car charged up and so far it has been doing its job quite well. I’ve got the regulator set to ~14.2 VDC and it just works like a <1 ampere trickle charger without the need to plug it into a 120 VAC outlet. My car consumes approximately ~0.07 ampere of current when parked due to the radio, alarm, and other electronics on board and before I had this solar panel installed, I had to start the car once a week and drive it around for 10 minutes to keep the battery from dying. Initially, I parked my car on the street with this solar panel installed inside the cabin on top of my rear deck. It wasn’t positioned to harvest the most energy from the sun and I’m certain that the rear glass windshield filtered out a decent amount of usable sunlight, but it still managed to keep my car’s battery from draining to a point that I couldn’t start it up. This was the case for over a year, with the car parked in areas with varying amounts of sunlight exposure. Now, I park my car in my driveway and have this solar panel installed outside of my car (with fuses near the battery and near the solar panel for safety) on a small pitched roof that I can move around. You know what? I came back from a month long winter vacation my car started up like it had a fully charged battery! I’m glad I bought and installed this solar panel into my car because it has definitely saved me time and gas money while allowing me to keep my second car charged and ready to go if it want to drive it!

Right out of the box, I was impressed at the build quality. The output is actually a little bit better than the specifications. I'm using it with the Beaudens 166WH power station and its working great. Gets the pack charged in 4 to 5 hours or so. A real Cracker-Jack product. Love it! It has ample places to mount in any way you decide. Lots of aluminum to work with. Construction is robust and clean. Back in the day, I had a 50 Watt panel from Kyocera (I think that's how it's spelled) that was much larger. Of course back them, we didn't have the efficiencies we have to day. Now I am considering a top of pole mount to complete the setup.

I've ordered several HQST panels of different wattage and one charge controller. They all produce the amps they list and the controller has worked well with some nice features, like amps in. One panel is for our automatic gate, and the HQST was considerably less expensive than the Brand's panel. FYI, this panel DOES come with MC-4 connectors. I like these for simplicity and I have to somewhat often disconnect and reconnect the panel from the little battery bank I put together to run LED 12 V lights. Packaging is solid and no damage was observed when delivered. It took longer than expected but I suppose the supply chain issue affects just about everything.

I was looking for a "smaller" panel, I picked up the HQST 50 watt panel. I'm making a small portable kit to charge my camp trailer or be able to pull the battery and panel out of the trailer & take it car camping. this fit the bill, smaller than a 100-watt panel & well built. just over half the size of the 100-watt panel.

I purchased four 50 watt panels and the necessary connectors to build a solar charger for our golf cart. Everything arrived promptly and in excellent condition. The project went smoothly and now our golf cart stays fully charged, most of the time without ever having to plug it in. I expect we will see much better battery life now, since lead acid batteries really benefit from being kept in a fully charged state as much as possible. Even on cloudy days, these panels are providing way more than a trickle charge current ... usually at least 1-2 amps at 36 volts, which equates to almost a quarter of their 200 watt full sun capacity. I'm happy!