A CR-V3 battery
) is a type of disposable high-capacity 3-Volt battery
used in various electronic appliances, including some digital cameras
. It has the shape and size of two side-by-side AA batteries
. This allows CR-V3 batteries to function in many (though not all) devices originally designed only for AA batteries. An RCR-V3
battery is a rechargeable 3.7 V lithium-ion
Disposable CR-V3 batteries
Often, a CR-V3 battery is a single cell based on a non-rechargeable lithium battery
chemistry, with a nominal voltage of 3 V
(the same as 2 alkaline AA batteries). Because both lithium and lithium-ion chemistries offer higher energy density
than alkaline batteries
or even NiMH
rechargeable batteries, a CR-V3 battery is designed to last much longer than a pair of AA batteries.
Rechargeable RCR-V3 batteries
RCR-V3 batteries, with a nominal voltage of 3.7 V, are also available. A review by Andrzej Wrotniak concluded that "1700 mAh NiMH's easily outperformed " in tests using two digital cameras.