# Connecting a Lithium Ion Battery to the GPS-RTK2 Board - ZED-F9P

**URL:** <https://community.sparkfun.com/t/connecting-a-lithium-ion-battery-to-the-gps-rtk2-board-zed-f9p/45033>\
**Category:** Development Boards\
**Created:** [January 20, 2023, 5:14pm UTC](https://community.sparkfun.com/t/connecting-a-lithium-ion-battery-to-the-gps-rtk2-board-zed-f9p/45033 "2023-01-20T17:14:28Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dwight](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/dwight/32/314_2.png) [@dwight](https://community.sparkfun.com/u/dwight)\
**Post date:** [January 20, 2023, 5:14pm UTC](https://community.sparkfun.com/t/connecting-a-lithium-ion-battery-to-the-gps-rtk2-board-zed-f9p/45033/1 "2023-01-20T17:14:28Z")

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I am planning on powering a SparkFun GPS-RTK2 Board - ZED-F9P (Qwiic) (and also SparkFun Thing Plus - ESP32 WROOM (USB-C)) with an external USB C powerpack.

It appears that I only need to provide the USB C power to the GPS-RTK2 Board and the Thing Plus board can get its power from the Qwiic cable. Is this correct?

I think I need to also use a Lithium Ion Battery - 1Ah to keep the rover running while I switch out the USB C powerpack. I am not sure how to connect the Lithium Ion Battery to the GPS-RTK2 Board. Is this connected using two pins of the Qwiic cable?

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**Author:** ![TS-Russell](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/ts-russell/32/6092_2.png) [@TS-Russell](https://community.sparkfun.com/u/TS-Russell)\
**Post date:** [January 20, 2023, 6:13pm UTC](https://community.sparkfun.com/t/connecting-a-lithium-ion-battery-to-the-gps-rtk2-board-zed-f9p/45033/2 "2023-01-20T18:13:37Z")

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You can either from either over qwiic; the WROOM has a lipo port…I’d say hook up USB-C power bank to WROOM and lipo to WROOM and it’ll switch to lipo power when you swap the bank 🙂

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**Author:** ![dwight](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/dwight/32/314_2.png) [@dwight](https://community.sparkfun.com/u/dwight)\
**Post date:** [January 27, 2023, 3:39am UTC](https://community.sparkfun.com/t/connecting-a-lithium-ion-battery-to-the-gps-rtk2-board-zed-f9p/45033/3 "2023-01-27T03:39:59Z")

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TS,

Thank you. I ended up purchasing the SparkFun RTK Express Kit which has both the GPS-RTK2 Board and the ESP32 WROOM.