The uniross games offer a much higher capacity for a slightly higher price. Introduced in 1907, the AA battery size was standardised by the American National Standards Institute (ANSI) in 1947, but had been used in torches and electrical novelties for some time before formal standardisation.

 The uniross games offer a much higher capacity for a slightly higher price. Introduced in 1907, the AA battery size was standardised by the American National Standards Institute (ANSI) in 1947, but had been used in torches and electrical novelties for some time before formal standardisation.