Alkaline Batteries… Now Rechargeable

Various brands, and styles of AA (double-A) batteries including Panasonic, Kodak, Sony, Toshiba, Polaroid, Energizer, and Duracell. By Vireak sc (Own work) on Wikimedia Commons.

A, AA (double-A), AAA (triple-A), C (R14), and D (D-cell or R20) – all common types of alkaline batteries – batteries that commonly have a zinc electrode and potassium hydroxide (caustic base) electrolyte. The vast majority are not rechargeable. When you do see a rechargeable battery of the types listed they are not likely to be alkaline but instead are likely either the older nickel-metal hydride (NiMH) or the newer lithium-icon (Li-ion). Alkalines are typically not rechargeable… until now.
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