Battery Tender Junior 12V 800mA Battery Charger and Maintainer

Using this to keep my car that's parked under the car port battery charged on cold winter nights. So far it's doing a great job, even through it's only pushing out 800mA of power (brings new meaning to trickle charge). It kept the battery at a high enough floating voltage to prevent my car from automatically flipping out and activate its alarm when the voltage drops on very cold winter nights, like sub 10 degrees F.

Simple to use, just attach to battery terminals and plug into the outlet. During the winter I take the rider mower battery out from the shed and recharge it once a week in my basement ( or you can continuously trickle-charge it all winter long ). Color coded status lights, and the smart device prevents overcharging.