Difference between revisions of "Coin cell"
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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]. | 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. | |
[[Category:How_to_-_batteries]] | [[Category:How_to_-_batteries]] | ||
[[Category:How_to_-_expansion_boards]] | [[Category:How_to_-_expansion_boards]] | ||
Revision as of 07:34, 22 March 2011
Batteries for coin cell backup battery holder
From Digikey
A rechargeable 6.8mm lithium coin cell battery, part #ML-621S/ZTN, is available from Digikey via 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.
