"Specs" on a TDM?
Mostly, try it and see.
They made so many versions and sub-versions, and sub-sub-versions,
and some are stickered at full load, or no load, for the data on the sticker,
meaning about the only way to know is try it and see.
Example: One website says they tested dozens and the 38V is great and amomg the best. Another site tested dozens and the 38 (at least that particular 38) was "not good enough to bother typing the test results".
If you get
really lucky, you might find some data for something with the exact same part number...
G-