The terms rechargeable, secondary, alkaline, single use are confusing. What is the difference between these terms?
Rechargeables (Also known as secondary batteries) can be charged (and re-used) multiple times. The chemical composition includes such chemicals as Nickel metal hydride and nickel cadmium. Single-use (also referred to as primary batteries) batteries can be used only once and are often composed of alkaline chemicals. See our Glossary for more details.
