Question about charger for CXS18 set

[ear3]

I ended up getting a CXS18 set so that I could have the slim batteries fir the CTC-Sys. Just curious, though, why the charger is a TCL6, rather than the SCA8, the latter being the optimal charger for Airstream batteries according to Festool. The CXS18 4.0 li-High power batteries are labeled as Airstream.

 

[Hawkeye0001]

The TCL 6 is the de-facto standard that comes with all tools, the SCA 8 / SCA 16 are upgrade options in case you need extremely fast charging. The difference on the 4Ah is neglible though, we're talking ~30 minutes with the SCA 8 vs. 40 minutes. What makes a lot more sense in my book - especially when using the CTLC SYS or TSC 55 - is the TLC 6 Duo charger, that's still faster for two batteries.