Does your iPod run down quickly Then the internal battery is coming to the end of its life Li-ion battery with 21 higher capacity than the standard nano battery Designed for the iPod Nano First identify your iPod model & select the correct replacement battery. This battery is for the iPod Nano. This battery is supplied with fully illustrated instructions & two special plastic tools used to aid the removal of the iPod cover. Replacing the battery will invalidate any warranty & is quite tricky & Maplin Electronics cannot accept any liability for damage caused during this process. If you are in any doubt please use Apples Out of Warranty Battery Replacement service about 86 at time of going to press. This 400m Ah battery has 21 higher capacity than the original battery so will give you longer playing times between charges.