Festool Battery pack BP 18 Li 5,2 AS - (Ref: 200181) You can't save time. But you can use it more efficiently.

Strengths and benefits: Faster charging of battery packs thanks to AIRSTREAM technology (cooling function for faster charging) and significantly increased charging capacity Charge status indicator for quickly displaying the remaining capacity Integrated rubber frame for protecting the workpiece and battery pack and for setting the machine down safely on inclined surfaces and roofs Optimum use in machines with high power consumption and short downtimes with AIRSTREAM function lithium-ion (Li-ion) replacement battery pack for all Festool 18 V cordless tools (except CXS/TXS) Technical details: Tensioner 18 V Capacity 5.2 Ah Weight 0.7 kg