Bests & Worsts Reviews from Amazon

I use a Genius battery tender so this was the brand I searched for. Rattling around in the trunk for a year, it got me started without breaking a sweat. The second time I had to use it, my battery was dead at 6 volts out of 12. The little charger couldn't start the truck and kept connecting and disconnecting with an overcurrent problem. I decided to let the device do its thing. I kept it on the dead battery for 15 minutes and it finally cranked over and started. Amazing. It took every drop of juice this little gizmo cold muster and it brought back a battery from the dead safely and automatically and got me unstuck. Best money spent. If it ever dies, I'll replace it with the same brand without hesitation.