I already have the GROVE shield plugged to my Photon.
I also with to have the module autonomous for Battery, and saw this kind of hardware https://www.sparkfun.com/products/13626
Problem : both use the pins of the Photon.
So do you have an idea ? how could I still continue to use the GROVE shield and have a battery for power autonomy ? is it exists a battery when I can plug with using GROVE inputs ?
Thanks a lot for your helpful feedback