Difference between revisions of "Coin cell"

Latest revision as of 12:49, 4 June 2014

A rechargeable 6.8mm lithium coin cell battery, part #ML-621S/ZTN, is available from Digikey via this link.

A coin cell battery allows the clock to keep the correct time when the system is powered off.

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 A rechargeable 6.8mm lithium coin cell battery, part #ML-621S/ZTN, is available from Digikey via [http://parts.digikey.com/1/parts/1406-battery-lithium-3v-recharge-ml-621s-ztn.html this link].
-What is the purpose of the backup battery? Is it only for keeping the clock in correct time, or are there other purposes? Does the Gumstix lose the clock immeadiately when AC-power is disconnected, thus making the backup battery practically a "must" accessory? Someone who knows, please replace these questions with the answer.
+A coin cell battery allows the clock to keep the correct time when the system is powered off.
 [[Category:How_to_-_batteries]]
 [[Category:How_to_-_expansion_boards]]