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SanDisk Senior User
Posts: 115
Registered: ‎05-26-2012

sansa e250

Why is there a coin cell battery if it has a Li-ion battery in the mp3 player

SanDisk Guru
Posts: 16,235
Registered: ‎04-17-2008

Re: sansa e250

To save settings/firmware, etc. in the event of total battery discharge.