[kaiteck]

This will decide whether should i get fiio e18 for android & pc or just olympus e10 for pc...

 

[ClieOS]

Assuming normal usage, any devices with Li-ion battery should last two years or more. After that the battery life will become significantly less with time. Of course there is still the possibility of replacing the battery if you can find one that fit and you are handy. It is far more likely you would have move on to something else by then.