Will A Battery Charger Charge A Dead Battery. If you have a dead lead-acid battery that means it has a build-up of sulfates on both the positive and negative plates. I had a dead flat almost new battery from leaving the parking lights on for a week.
If a battery is completely dead but has been revived by a jump start there are ways to fully recharge your battery. Depending on how long it has been dead overall battery condition and age it may be beyond help. The charger immediately tries to bring the battery voltage up to about 145 volts.
It can take anywhere from 6 34 hours estimated to charge a dead car battery depending on.
Simply hook it up and charge up the battery then get back on the road. These charging devices are designed to feed electricity into a dead battery at the rate necessary to safely and deeply charge. If your battery is very dead you can still bring it back to life. After about 20-30 minutes there will probably be enough charge in the battery that the charger charge it.
