Baltimore City Council condemns Trump's rhetoric, days before his visit

Bob Weber

Overcharging car battery will kill it

Overcharging car battery will kill it

Q: We have a 2006 Toyota Sienna with 40,000 miles. The car sits in the garage most of the time waiting for us to remember it's there. Often when we do remember, the battery is already dead, and I have to charge it using a 30-year-old charger with 10-amp and 2-amp settings. If I leave the charger connected all the time at 2 amp setting, would it cause damage to the battery?

— E.L., Vernon Hills

A: If you leave the charger connected continuously, even at a mere 2 amps, the battery eventually will die. Overcharging a battery causes excessive gassing — the electrolyte gets hot and both hydrogen and oxygen gas are generated. On older vented...