[Digeeedad]

I'm about to order a FiiO A5. One concern that I have, given that the battery is not user replaceable, would be battery life span. I understand that many factors will influence this but given daily use, are there any estimates or experiences related to life span? I'm guessing or more accurately hoping, that life span would be long enough that a user would be ready for an upgrade/change in equipment before the A5 will no longer charge.

FiiO apparently only has a 6 month warranty on the battery but I’ve only read one user review complaining about early battery failure.