Trimble 4000SSE's & SSI for sale
I have two Trimble 4000SSE's (one needs the internal battery replaced) and one 4000SSI that need new homes. All come with compact L1/L2 antennas with ground plane, aluminum height measuring rod, four slot battery chargers, antenna battery cables, and the original Trimble hardcases for the receivers. I also have one of the battery adapters that attaches to the rear and bottom of the receiver so that the batteries attach without cables and can be quickly changed.
Happy to pull them out and take pictures if there's any interest. Make me an offer or ask me questions.
Never let someone owe you more than you can afford to lose.
Some years ago Jim Frame posted a how-to with pictures for replacing the internal batteries in those.
They are GPS only and have limited # satellites, but will be chugging along when a lot of more recent models are unusable. Trimble didn't build in an end of life in these. You just have to deal with the 2048 week rollover.