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Ensuring Batteries Don’t Fail From Lack of Use

“Why did my battery fail? I never even used it?”

This is a common question from people who wonder why their batteries fail after being left on the shelf, or in a car that is not running, for an extended period of time. The problem is sulphation.

The chemistry in the battery requires reversible reactions that maintain a state of equilibrium as the current flows, meaning that the lead sulphate salts that form can be broken down and this state of equilibria maintains the life of the battery. However, if a battery stays on the shelf for a long time or stays in an unused car, lead sulphate forms without being broken down.