Something to add about the battery when you replace it..... fly-wire it off the Epoch board, and tape it somewhere to the inside of the cab.
Phone wire from places like wilco's is ideal for this.
Hi thank you for bringing the battery concern to my attention, I have checked my machine and the battery is starting to grow that fuzzy white stuff :s (looks like I will be buying that new battery then), luckily it appears only to be growing on the one side and has not leaked anywhere. I will get on this asap as suggested, I have searched around and realised that I need to desolder the battery, so I will be needing to get a solder sucker as from a quick google searching using desoldering braid is not adviced due to possibility of damaging the PCB. Will be practising my solder/desoldering skills over the weekend then.
By fly-wire do you mean soldering a connector to the PCB for the battery to attach to - e.g. like for a 9v battery, you could use a 9v battery connector:

I guess I can use 2 strips of some normal thin wire cable and solder the one end to the PCB, the other to the new battery? Also can the weak vinegar solution be used instead of isopropanol for cleaning the PCB, or is the vinegar used only to remove the damage done by the leaking battery?