If your battery is not currently harmed beyond repair (reading much less than 10 volts on the voltmeter), Epsom salt will revive it. However, it's necessary to take all the required safety measures to prevent accidents. Sodium bicarbonate will certainly reduce the effects of the battery acid in either situation, https://reconditioning-batterywee54072.isblog.net/the-war-against-lead-acid-battery-repair-epsom-salt-52175352