Lithium batteries introduced in 1970, since then a lot of changes, developments have been done to reduce the size and improve backup. Commercially it was launched in 1991.Normally Lithium batteries discharge @ 1.5 - 2 % per month even if not connected to any device.Mobile Batteries comes with a specific age (life cycles) and capacity. Dealers and traders face complaints as there is no information is provided by manufacturers regarding its life cycles or age.