ØIt was the first commercially produced battery, and so it had a HUGE impact on society; it made portable devices such as torches, radios and clocks possible<?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o></o> ØIt is very widely used, as it is a cheap, portable source of steady electricity
they wouldn't ask anything huge on it, its more the comparison between batteries that there gona ask