In order to store your batteries correctly, you should keep them in their original packaging, or place them in a plastic container – NEVER store batteries inside equipment. If possible, use plastic caps to prevent corrosion. Lastly, be sure to separate old and new batteries from each other. Sure, as long as they're all the same type and age (new versus used). It's best to store them in the original packaging or to cover the terminals with plastic caps so the loose batteries don't contact each other and discharge. Things to Avoid Store in a Cool, Dry Area. Store used batteries in a cool and dry area. Use a Plastic or Cardboard Container. As an added safety precaution, use a non-conductive storage container such as a plastic pail or cardboard box rather than using a metal coffee can for storage. Secure Positive Terminals. DO practice proper battery storage by keeping batteries in a cool, dry place at normal room temperature. It's not necessary to store batteries in a refrigerator. Myth: Storing batteries in the refrigerator prolongs their life. Fact: It's partially true, but you're better off not doing it. But even when they're not plugged in, those electrons can sneak invisibly out of the battery, draining their capacity through a process called self-discharge.
Putting masking tape on batteries is one way to prevent them from touching. Ziplock bags are another way. "Putting them in plastic bags with all the negatives up, all the positives up, or however you want to do that, " Dill said. "Make sure they're tight, so they don't roll around in that. "
Do not store batteries with the opposing ends touching one another. Keep batteries of the same type and age stored together. Avoid mixing different types of batteries with varying levels of power. The older batteries can drain energy from the newer batteries.
When stored at room temperature (i. e. 70°F/ 21°C), cylindrical alkaline batteries have a shelf life of 5 to 10 years and cylindrical carbon zinc 3 to 5 years. Lithium Cylindrical types can be stored from 10 to 15 years. Prolonged storage at elevated temperatures will shorten storage life.
Separate old and new batteries Store your used and new batteries in separate containers or plastic bags and mention the date you bought them. Also, batteries of different types should be kept apart from one another. If they are stored together, they could react and cause short-circuit.
Even batteries with a small voltage like commonly used AA and AAA alkaline batteries can start a fire under the right conditions. This can happen easily if a penny touches the uncovered end of a 9V battery, or if a paper clip or other common metal object comes in contact with more than one AA battery.
Simply leaving BRAND NEW batteries inside the flashlight should not cause them to lose power faster then storing them otherwise. Heat is an enemy to batteries. There is also the risk of battery leakage causing damage to the light.
Batteries left too close to a heat source—or caught in a fire—have been known to explode. Other external factor can cause a lithium-ion battery to fail, too. If you drop your phone too hard (or too many times), there's a chance you'll damage the separator and cause the electrodes to touch.
It's advisable to protect the battery from moisture and humidity by packing it in a plastic bag before storing it in the refrigerator. Li-Ion and NiMH batteries are best stored in the refrigerator.
How to extend your Android's phone battery life Avoid full cycle (zero-100 percent) and overnight charging. Ending a charge at 80 percent is better for the battery than topping all the way up to 100 percent. Use fast charging technologies sparingly and never overnight. Heat is the battery killer.
Store batteries in a dry place at normal room temperature. Do not refrigerate Duracell batteries as this will not make them last longer, and avoid putting battery-powered devices in very warm places. Do not attempt to recharge a battery unless the battery specifically is marked “rechargeable. ”
Batteries should be stored in a well-ventilated, dry area kept between 40 and 80 degrees Fahrenheit. They should be stored away from direct sunlight, heat sources, and water. Batteries should be stacked so that they're stable and won't be bumped, knocked over or otherwise damaged.
Storing them at lower temperatures will slow their self discharge rate dramatically. NiMH batteries stored at freezing will retain over 90% of their charge for full month. So it might make sense to store them in a freezer. If you do, it's best to bring them back to room temperature before using them.
Use battery-saving modes Reduce screen brightness. The easiest way to conserve battery life while maintaining full function is to reduce the brightness of the screen. Turn off the cellular network or limit talk time. Use Wi-Fi, not 4G. Limit video content. Turn on smart battery modes. Use Airplane mode.