Battery problem on iPod touch 5g?
hi everyone, i have an itouch5g and i think that it has a problem with the battery, it lasts like 5 hours at web browsing, with iOS 8 i think its normal, bit my problem is when the iPod reaches the 40% of battery, it starts to drain faster until it reaches 20% , then it starts a normal draining but here comes The other problem, i think that the ipod turns off before reaching 0% , this is beacause i never get the 10% battery notification and also I use an app to see how is the battery percentage (i know is useless but i use it like a reference) and the last percentage i see before the iPod turns off is 12% so with this i can say that it turns off before reaching 0%
i have had this problem since the first day i bought the iPod, i don't know if it is normal or i should take it to a genius bar.
thanks
iPod touch (5th generation), iOS 8.3