How much does a lead acid battery lose?
How much does a lead acid battery lose? Luckily, lead-acid batteries have a fairly slow self-discharge rate and you’ll lose about 4-5% of your overall charge on a monthly basis. Heat will increase the rate of self-discharge as it lowers the internal resistance within the battery, so if you store it in a 90 degree Fahrenheit garage your battery may lose more than the 4-5%. Why did my car battery Die 4 months ago? So, my car battery died 4 months ago while it was unused in my garage during the summer (interior dome light left on for months). I...