Cheers Drewps.
I have seen these. Here is the dilemma:
The TS leans a lot on the sidestand. so much that the battery looses acid down the overflow tube and therefore stops running the indicators etc. Battery boxes are scarce and this is probably due to the fact that most have been eaten by acid when the overflow has not been put on properly. The battery box contains the mountings for the cover on that side of the bike.
Specific issues
The battery in the link is 40mm longer than the original one and I would need to see if it would physically fit in the space (new battery box or not)
The UK spec of the TS does not have a regulator (the US one does). The wiring is there so I did consider using a pattern single wire one made for the DT from yuniparts to get over this. This assumes that they are going to be very similar specs in terms of volts and amps.
Any thoughts??