[mtodman (Matt)]

I need to power a number of devices from a single 12V 85AH Gel Cel battery. These devices include a notebook PC and a Gemini controlled Losmandy mount but also include dew heaters and PWM control circuit to control my light box.
Currently, there is no electrical isolation between any of these devices.

Is there a relatively simple way I can isolate the individual circuits from the likes of current surges and voltage fluctuations? I would hate for a short circuit on one device to destroy my Gemini computer.

Thanks

Matt