I connected this inverter to 4 group 29 marine batteries in my trailer. I have 5000 and 13500 BTU AC units. It powered the 13500 BTU unit on a 100 degree day for 1.5 hours before the batteries got low. Started my generator which is only connected to a 100 amp battery charger. The AC unit then continued on the inverter just fine. It powered the 5000 BTU unit all night with no generator and I made coffee with my Keurig coffee pot in the morning. Still had 12 volts on my batteries. Worked great.

The product information says "comprises 24 sets, each set has 1 L shaped bracket and 4 screws". I thought the "L" shaped bracket was to mount on top with the large screw since one of their diagrams shows an "L" shaped bracket. The description should should say "each set has 1 U shaped bracket and 4 screws". Whoever wrote the description apparently missed that week in first grade when they explained what an "L" and a "U" looks like. Other than that, the clamp drops neatly over the standing seam of the roof and the screws on the side tighten using an allen wrench.

Good battery. Currently using it to provide backup power to my sump. It has a good run time, having covered power loss of several hours (off/on running) without any issue.
Re-charges without heating up.

I've been using this to charge a power station off of a 100 watt panel. The MC4 connectors snap together tight, the cable has a decent amount of flex to it. The XT60i connector has the proper polarity, sometimes XT60 polarity can be hit or miss on cables. The price is a little high but overall it is a good quality cable.

I purchased with the hope that this charger would keep my car battery charged over several months while I was away from home. I have now used it twice, both for two month periods where the car was parked under a carport. Even though the charger was not in full sun, it has worked and the battery has been fully charged each time on my return.