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The pH of car battery acid is normally around 1 (extremely acidic).
It depends upon the size of the battery. For example, 1 triple A battery (AAA) hardly reach 1/16th kg..:)
try many things, but the only thing that work for my car (03 tahoe) is disconnecting car battery for 5 min. you need to replace the rfa battery first.
In 24 hours it will be charged enough to start the car. You really need a much larger charger for a car battery.