Have we determined the max 21700 length yet? I have some 74.8.8 mm protected 21700s that need a charger.
The Xtar VC8 will fit the protected 21700.
Other chargers that will fit protected 21700 would be:
Miboxer C4-12 (new 2-button version)
Yonii-Q1 (single-slot)
Xtar SC1 (single-slot)
and of course magnetic chargers like the Olight UC, Folomov A1, etc.