Review on FOVAL 0.75Amp 12V Automatic Trickle Battery Charger - Smart Charger for Car, Motorcycle, Lawn Mower - SLA, AGM, Gel Cell, Wet Lead Acid Batteries by Nick Garrett

I bought a switch mounting plate for $1.95 at the hardware store and screwed the plate to my garage wall and then used 10 foot mounting tape to attach the charger to the plate. If I move, I can simply take the plate off the wall and take it with me. The charger itself works great. It will not charge a dead battery or operate from an external source. Everything, but it does what it's supposed to, which is to keep the battery fully charged. I plug it into my Harley when I'm not riding for a few days and when I come back the engine starts like I just put a new battery in. Reliability or durability will tell, but so far this little device does exactly what it says on the tin, and at a more than reasonable price.