This is a 12 volt, 5 amp battery charger with clamps, one of the more common battery connections used. The charger can also be used to maintain batteries at a full charge, which will help prevent sulfation.
Note: Not for use on aviation batteries
I was looking for a low amp charger because the crappy Harbor Freight generator I have was overloaded. The unit is solid and seems well built. 5 amps is not much so it's a slow charge. I don't know if the desulphiser is working but it's appropriate for my situation of charging my 2 6v batteries(wired 12 v) in my motorhome.
Somewhat pricey but worth it - this is THE charger I've been looking for.
It's a bit tricky to tell if the led is yellow or orange from afar. You'll get used to it after a while.
This unit resurrected my 6-year old Varta battery that's been lying around unused for at least six months.
It's not a quick charger but that's a good thing since it really takes time to "heal" a battery back to a good