What have we here you ask.....
I have been using what may be the best battery charger that I have owned and used to date, that being the Genius G3500 smart charger.
So far I have charged my ham shack backup multiple 38amp hr AGM batteries, small 5.0 amp hr Gel cells used to power smaller devices like my HT'S, and even the battery in my truck.
The Noco Genius G3500 is a smart, 8 Step, fully automatic switch-mode battery charger and maintainer. The G3500 restores batteries to their original capacity, recovers slightly sulfated batteries, charges batteries in cold climates, rescues drained batteries and provides maintenance charging to increase battery life. A versatile battery charger that provides charging modes for both large and small batteries from 1.2-120Ah.
BUILT-IN FUSE PROTECTION
Each battery connection accessory features an over-molded inline fuse to increase user safety by protecting the battery charger from potentially dangerous short circuits.
Connecting and disconnecting accessory leads has never been easier! A uniquely designed interchangeable connector allows accessories to be properly mated and fastened with a snap-lock latch.
COMFORT CABLE CLAMPS
Ergonomically designed to make battery connecting and disconnecting effortless. Features a fully insulated over-mold casing with strain relief ends to alleviate unwanted tension on cable leads.
Here is a link that shows the G7200 that I also own.....