the Battery Tender Junior 800. As batteries sit, they’ll naturally discharge. That’s why you almost always need to jump-start a car that’s been sitting for a while. If they sit long enough ...

Your car battery is an essential part of your ... t start your engine or drive your alternator. I recommend using a battery tender/maintainer to get your battery to a healthy range and keep ...

For car batteries, disconnect the battery cables ... Use a "slow charger" like a battery tender to charge up the battery the next time you need to run the vehicle, rather than a harsh jump ...