How To Charge Completely Dead Car Battery. Continue doing so for a few minutes. Works with lead-acid batteries and great tool for off-the-grid home battery banks.

If you are lucky and there is enough juice left you can hook it up to a smart battery charger and get more life out of the battery while desulfating the lead plates and bringing it back around. If its completely dead its gone and you need to find a replacement. Ad Cheap 20 minute method reconditions dead car batteries back to life.
If your car battery is dead use a standard 4-8 amp charger to fully recharge it.
You can also jump-start your car. Add the mixture to each cell of the battery using a bulb-type filler or a dropper whatever is available. Updated 3 years ago Author has 423K answers and 869M answer views. If you are lucky and there is enough juice left you can hook it up to a smart battery charger and get more life out of the battery while desulfating the lead plates and bringing it back around.
