Festool Kapex KSC 60

[egyhenger]

Hey FOG,

I am thinking to get a battery powered Kapex. I already have 2x 4.0Ah Li-HiPower batteries. I was wondering whether it works with 4.0 batteries instead of the advertised 5.2 Ah ones and if yes, what would be the difference in runtime.

Does anyone have experience with smaller batteries?

Thanks for the answers in advance...