One of the problems in this time of lockdowns and quarantines is that you don’t get to drive much and if you haven’t taken a drive for two weeks or so then you’ll probably find that your battery is dead. One thing that you can do is to jump start your car which should be fine especially in an emergency.
But the best thing to do is actually to charge your battery and this is where a car battery charger comes in. It plugs into your main outlet and then you have clamps that connect to the battery.
If your battery is badly deteriorated, you will need to repair. The deterioration is caused by the buildup of lead sulfate crystals in the battery cells and this is what prevents the battery from holding a charge. The lead sulfate crystals can be removed by charging with low voltage pulses. Once the crystals are removed the battery should be able to hold the charge again.
You just have to wait until the battery becomes full. This will take quite a while especially for repair.
A car battery charger this is definitely a good addition to your car toolkit. So aside from jump starting you now have the option of charging or repairing your battery as well.