Classified by Size and by Chemistry
Batteries are categorized both by physical size, like AA and AAA, and by their internal chemistry, like alkaline or lithium-ion. Using the correct type for your device matters for both safety and performance.
Rechargeable vs. Disposable
Alkaline and lithium coin cells are generally single-use, while lithium-ion and certain NiMH batteries can be recharged hundreds of times. Rechargeables cost more upfront but are cheaper and more sustainable over the long run for frequently used devices.
Frequently Asked Questions
How should I dispose of used batteries?
Batteries should not go in regular household trash β most areas have dedicated battery recycling bins at retailers, community centers, or municipal facilities, since batteries can leak harmful chemicals if landfilled.
Can I mix rechargeable and disposable batteries in the same device?
It is not recommended, since they have different discharge characteristics β mixing types can reduce performance or strain the device, so it is safer to use matching batteries together.