are all double a batteries alkaline?
Long Story Short: AA batteries are very common household type of batteries, with the dimensions of 14.5 × 50.5 mm (0.57 × 1.99 inches). Their most important types are: - Alkaline: non-rechargeable, 1.5 V nominal voltage, ... - Li-ion (14500): rechargeable, 3.6 - 3.7 V nominal voltage.