Reviving an old TCR1105

Hi guys,

for an upcoming low/no budget archeological mission in the himalayas I might get my hands on a Leica TCR1105.

I'm familiar with old leica ts but not this model in particular.

As i understand it's a robotic one? I can't find the user manual anywhere on online...

The last time this instrument was used was 15 years ago... so i expect the batteries to be dead.

I'm planning on send this ts to revision before the mission starts.

With instruments sleeping for that period of time what problems can i expect? Will leica be able to check everything during maintenance? The "robotic" side of it is pretty scary regarding the number of things that can go wrong with rough transport (plane + offroad 4x4).

Also the external controller is missing. I suppose it's possible to use this ts without it like a non robotic ts?

Please let me know your pro thoughts .

Thanks a lot!