Worth spending the extra for a quality solar battery maintainer with a proper voltage regulator built into it. It won’t charge up a flat battery, but easily maintains a charged battery. Works in cloudy and even misty conditions. it is installed behind a tinted front window in our caravan, and works extremely well. I’m now confident that my leisure battery will be kept charged and well maintained during the winter months when not in use.

I use these two 10W panels to maintain my vehicle and mower batteries. They don’t charge fast, but they do exactly what they’re meant to—keep batteries from dying when not in use.

I’ve been using these panels almost every day for a few weeks now. They’ve been reliable and consistent, keeping my battery system charged without any issues.

I was surprised by how light these panels are for the amount of power they produce. Together they provide plenty of energy to keep my battery bank charged while off-grid. Great option if you don’t want to add too much weight.

I use this with a small portable power station and the combination works well. It’s slow compared to larger panels, but that’s expected at 40W. For light use, it’s more than enough.

Despite being 400W, setup is straightforward and doesn’t take long.

I use this panel with my RV power station. Keeps my batteries charged during trips.

Being able to check battery status from my phone is more helpful than I expected.