My e200’s battery met the destiny of those in Sansa’s current models. After about 3 years the original 15-20 hour life was down to an hour and a half, so it mostly got used on one or the other power supply. LUCKY, this model has a replaceable battery and for around $7 I got a new one with almost twice the MAH rating of the original (1350 vs 730).
That doesn’t meet the full benefits of swappable standard batteries, but at least it takes the player out of the “designed to die” category implied by sealed battery.
