Does anyone know if the GRE battery holders are made specifically for the GRE/PRO scanners or is there a universal battery holder that I can pick up cheaper at radio shack or electronics parts dealer?
They absolutely do via their in-store parts system (not the website). The in-store employees have access to this system via their POS terminals. They can look it up via these terminals through the 106 parts list or directly if you have the part #. I've ordered one and received same. Just don't remember the part number. It was around $4.00 if I remember.It doesn't seem that the RadioShack website carries the battery holders; I wouldn't be so sure they even carry them.