How long do lithium mp3 nonreplaceable last?

[ensabah6]

Hi,
I have a sansa Clip that is 2 years old. Still works well. I know that one day the non-replaceable battery will die. If I use it 2-3 hours a day everyday during "dead" times like travel, how many years on average can I expect out of it? In terms of money, Should I sell it and buy a new one? Or wait for it to die and buy a new one?

 

[mgb_phys]

It depends on a lot of factors, the quality of the original cell,s the quality of the charger, temperature etc. But it's generally >1000 charge cycles, so a couple of years.
The idea is that by the time the battery is dead the device is obsolete.
As the unit ages it will gradually hold less charge and so run for less time between charges.

 

[ensabah6]

Sansa Clip mp3 players use Lithium Polymer cells does this help?

How long do apple ipods last in terms of years?

I find 4Gb to be quite usable. And small.

I got it as a gift around Dec 2007. Still works fine. I know lithium batteries don't last forever.