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Psion netBook Battery Service
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== The backup cell, and the trap == The '''CR2032''' backup cell holds the RAM disk while the main pack is changed. It is a standard part and still trivially available. '''But do not rely on it while removing the main pack.''' On some machines a microswitch in the battery catch turns the backlight on instead of shutting the machine down, and the resulting surge is more than the coin cell can carry โ the entire internal disk is lost. The procedure for avoiding this is in the [[Psion Series 7 Troubleshooting Guide#Step 3: removing the battery can wipe the machine|Series 7 troubleshooting guide]] and it is worth reading before you touch the catch.
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