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Rechargeable backup battery

KSels
New Contributor II
1,467 Views

I got an Intel Edison with an mini breakout board and want to add an rechargeable backup battery to the module when the Edison is off and the battery to drive the edison is removed. It must be able to hold the RTC alive for at lest 14 days.

Does any one know what I can use?

1 Solution
VIvan7
New Contributor III
187 Views

From the documentation:

Discharge current (consumption): 8.0 μA

You have to rebuild the kernel to adjust the PMIC settings when you want to change the charging voltage and current.

http://www.intel.com/content/www/us/en/support/boards-and-kits/intel-edison-boards/000016246.html Steps to Change V_VBAT_BKUP Configuration for Boards and Kits

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3 Replies
Pablo_M_Intel
Employee
187 Views

Hi KimLorentz,

It should be possible, however, you should investigate different batteries with different specifications to determine which one is best for your project. There are various posts about this, I would suggest you to check the next one: /thread/67372 https://communities.intel.com/thread/67372. Two of the users suggest different options, Yodal talks about a battery that he's using on his custom board, and mpapini suggests using capacitors to maintain the RTC running. I'm not sure if the last option would be useful, I believe you should use something more reliable. But as I told you, you should check different options.

Regards,

Pablo

KSels
New Contributor II
187 Views

I found a loot of links of how to edit the battery voltage and uA charging, but is it not a easy way to do that? one code/command or somthing.

Also what is the discharge current when only battery is connected to the RTC pin.

Found Sanyo ML1220-HJ1 Litium 3V 15mAh in Norway - https://www.elfadistrelec.no/Web/Downloads/05/_2/06926505_2.pdf?mime=application/pdf Link

VIvan7
New Contributor III
188 Views

From the documentation:

Discharge current (consumption): 8.0 μA

You have to rebuild the kernel to adjust the PMIC settings when you want to change the charging voltage and current.

http://www.intel.com/content/www/us/en/support/boards-and-kits/intel-edison-boards/000016246.html Steps to Change V_VBAT_BKUP Configuration for Boards and Kits

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