xtl1500

I have an XTL1500 UHF S split that will only power on with the accessory adapter plugged in, I have disabled the external accessory enabled under radio wide settings, but still cannot power the mobile up without the accessory adapter attached. Is there a setting I am missing or is this just a...

Does anyone know it the CPS software is the same for the XTS 2500 portable and the XTL1500 and XTL2500 mobiles? I know they need separate cables and I have the software and cable for the portables and just want to know if all I need is the cable for the mobiles.