D Batteries in Batteries

How long do D batteries last?

D batteries usually last about 36 hours if they're in constant use. In tools and toys that you use intermittently, batteries can last for several months. Once dead, you'll need to replace them. Rechargeable batteries can last two to three years before they stop holding a charge.

How long can I store D batteries?

Depending on the brand, D batteries can last in storage from five to 10 years. It's important to store them in a cool, dark, and dry place free from moisture. Once a battery is dead or expired, you'll need to follow the manufacturer's directions to dispose of them properly.

How can I tell if a D battery is good?

You can check to see if your D batteries are good for use with a simple test. Drop them with the flat, negative end down from a couple of inches to a table. If the battery stays standing or has a loud thud, it's good to go. If it falls and bounces, it's dead and needs to be replaced.