@Justin Woodward Hi Justin, it occurred to me to add, you could just buy what you need (search "deans plug pigtail" on Amazon). The deans plugs can be a bit challenging to solder if you don't have much experience. If you buy a pigtail, you can just plug the wires on the pigrail into the NyBoard (make sure the polarity is correct), then plug up the Deans connectors. Chris

@Justin Woodward Hi Justin, yes, you just wire the battery to the NyBoard as shown by the arrow on your photo. I had the Deans plug I needed lying around from years of R/C projects, but they are readily available online if you don't. Or you could cut off the Deans plug and use whatever you have. Just to be careful not to short out the battery while you are soldering everything up. The Raspberry Pi is powered through the 2X5 socket connecting it to the NyBoard. AFAIK the NyBoard power to this socket is regulated, so the Pi will not be damaged by powering it this way. Hope that helps! Cheers, Chris

Hi Rongzhong, Great! Now it's working! I had wondered about that switch. I am attaching some pictures - I used a stacking header and some standoffs to mount the RPi a little more apart from the Nyboard. Without the separation, the heatsink on the Pi was hitting the Nyboard, plus the Pi4 runs a little hot so I wanted to give some space for heat dissipation. Cheers, Chris

Hi, I am using this battery: https://www.amazon.com/dp/B073RGQ5BW?psc=1&ref=ppx_pop_dt_b_asin_title (Gens Ace 2S 7.4V 1550mAh 25C LiPo Battery Pack with Deans Plug). Seems to work fine and is a perfect fit!