GPS Backup Battery

GPS/GNSS
1

Hi,

I am using :- SparkFun GPS-RTK2 Board - ZED-F9P (Qwiic) - SparkFun Electronics

I am observing that tiny backup battery is not working as I can’t lock GPS after quick power Cycle. If I want to replace this on baord is it any Coincell or it is rechargable battery coincell?

can anybody share link to battery used on this breakout board?
This one

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2

I traveled the same path. Check out RTK-SMA - replace BBR (ML414H_IV01E) - source & tips?

1 Like
3

@doug_f Thank you for the link. I am ordering my parts now.

4

Hi @ha11otronix ,

Please be aware that the battery on the SparkFun GPS-RTK2 Board - ZED-F9P (Qwiic) is different to the battery on the SparkFun GPS-RTK-SMA Breakout - ZED-F9P (Qwiic). The GPS-RTK2 battery is a Seiko MS621FE-FL11E. The RTK-SMA battery is Seiko ML414H-IV01E. Please make sure you order the correct one.

Also, are you sure the battery needs replacing? Have you checked the cell voltage after leaving it powered and charging for a few hours? Perhaps you have not saved the F9P configuration - to Battery-Backed RAM (and/or Flash)? You need to ensure the configuration is saved before disconnecting the power.

I hope this helps,
Paul