Nice trickle charge.  This is definitely a trickle charge.  takes a few days to bring battery back to fully charged. I use on Dump trailer where hydraulic motor lifts bed and lowers. If you use battery load daily you'll need a larger faster charger. If in frequent or couple times a week this works great. I added a marine 110v plug to side of tool/battery box and wired to charger inside. That way can plug in power cord externally and use in inclement weather. Glad I purchased, dead battery not so good with load of gravel in trailer.