Can A Fully Discharged Car Battery Be Recharged. But it wont drain below the protection. Current was conducted to discharge the battery.
3Using jumper cables connect the positive terminal of a healthy battery to the positive terminal of the dead battery. Show activity on this post. Turn on the charger and continue until the AGM battery reaches a full charge.
If the car battery is left discharged for long periods of time hard sulfation occurs the formation of lead sulfate crystals.
With this method you dont need another car to help you with the recharging. So Yes they can be fully discharged. In most cases but not all this will charge a fully discharged AGM. If you charge it or jumpstart it before this point is reached eg.
