Replacement Battery for Festool T 12 Cordless Drill - Lee Valley Tools
12v 3.3 Ah Ni-mh Battery For Festool Festool C 12 C 12 Duo C 12 Li T 123 T 123 Li T3 Tdk 12 564167 564378 491821 494522 494917 - Rechargeable Batteries - AliExpress
Festool C12 Cordless Drill BPS12 Generic Battery Swap into a Festool BPS 12 Case. Resurrect your C12 - YouTube