yes i have all three GBfan kits. I was thinking of getting the rechargeable 12v, but for now how many batterys do i need and how hard is it to hook up the 12v battery.
It is as hard as you want it to be. The GB Fans board can run all of the power to other kits. I have a 12v rechargeable that I run to the power terminals on the sound board. You’ll want to get a rechargeable battery with a larger mAh rating so you can run lights and sounds for a longer period of time.
Most of us use 12v 9800mah lipo “blue brick” CCTV batteries found on ebay for around $30 w/ charger included. You’ll have to either buy sockets for it or else cut off the plug to connect it to your kits, neither of which is rocket science.