Review on LEICESTERCN Automatic Trickle Battery Charger Maintainer 12V 750mA [4-Pack] for Car Motorcycle Lawn Mower 🔋 Tractor Boat - Efficient Float Charger for SLA ATV Wet AGM Gel Cell Lead Acid Batteries by Paul Barnes

My elderly mother has a 2012 Ford Focus that kept draining the battery, sometimes overnight, when it was parked. It only runs occasionally and after many attempts we just couldn't find the source of the power leak. (This model is famous for it). I wish I had bought this sooner - cheap and relatively easy fix. Your car stays plugged in to charge in both summer and winter and always starts without a problem. A minor inconvenience: the quick release is a little tight for her loose grip, but she still manages to slip it in and out.