VARTA Longlife Power 1er-Blister 9.0V Alkaline E 6LR61 LR22 (Preis pro Blister)VARTA-4922/1

If you need as much power as you can get - this is the one!
VARTA Longlife Power is the most powerful of the VARTA alkaline batteries.
Developed especially for devices with high energy consumption.
Stay independent with high performance battery power when using power hungry devices, such as remote controlled toys, computer equipment or LED flashlights.