Solve the mystery! What year and model is this telescope?

Hello, everyone. Can you help us with a minor mystery?
We're trying to identify the exact model and year of a Celestron NexStar telescope kindly donated to the Friends of Galileo Astronomy Club. It needs some repairs but it should be a valuable part of our telescope library.

It's an older model NexStar so the current user manuals don't quite fit. The scope says item #31132, D=130mm, F=650mm. Celestron hasn't responded.

The donor said the telescope is functional except for the external battery pack, which takes eight AA batteries. There is no internal power pack is there is in new models. We cleaned up some battery corrosion but no luck getting the hand controller to power on at all.

Rose City Astronomers did give us some tips to go on (thanks, RCA!) but we need more info.

• Can you help us identify the exact model and year?
• Do you have a compatible hand controller or power pack we can borrow to isolate the problem?
• Can you point us to the correct user manual?

If you have any suggestions, let us know through our Contact page.

Thanks in advance!