To directly answer your question:
Quick and Dirty-
Measure the diameter of the Post on the "ReMan" and pick up the appropriate sized "Ring Terminal" and crimp it onto the bare end of the existing wire.
(After you've cut the offending terminal Off)

011 154 62 02

Is a Valeo (Manufacturer) alternator unit.
Some Mercedes models come with either/or Bosch or Valeo.

(Who in his right mind in the PRC knows which style the Zoo's re-painters were
trying to imitate ?)

First Question for you: By what diagnostic parameters was the Valeo deemed
"Tango Uniform"?

It might only need a new "Voltage Regulator" (Which ,on the Bosch Units, has
new Brushes too.)

Under normal conditions (NOT: Nuclear Explosions,Fires,Massive EMP exposure)
the wear parts on Alternators [and starters] are Brushes and Bearings.

Unsolicited Opinion: Your friend's Mercedes will not be happy ,in the long run,
with the Quality of the zoo's "Repaint" jobs.

'Better by far to pick up a VR and try it on the Valeo.

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'84 300SD sold
124.128