9 volt rechargeable batteries in Rechargeable Batteries(46)

How should I store rechargeable batteries?

When you aren't using rechargeable batteries, they should be stored with a 40 percent charge or more. If they are fully charged and you won't be using them right away, they should be stored fully charged. They should be kept in a non-metal container in a cool, dry place.

How do I dispose of rechargeable batteries?

If rechargeable batteries are no longer holding a charge, to dispose of them, first place tape over the terminals and put each battery in a separate plastic bag. They should not be placed together as they could rub against each other and start a fire. Follow your local regulations for battery disposal.

How long can rechargeable batteries stay in a charger once they're charged?

Rechargeable batteries shouldn't be left in a charger longer than 24 hours once they reach a full charge. Some chargers have an automatic shut-off, but if it doesn't, leaving the batteries in an active charger for an extended time can ruin the batteries.