BBM offers the Energizer 8.4V/175mAh rechargeable 9 volt style battery, NH22NBP . Trust Energizer to deliver the power you need - when you need it. Known also as the rechargeable 6F22 Battery, it crosses to the Varta P7/8.
Energizer NH22NBP Specification
Nominal Voltage - 8.4V
Capacity - 175mAh
Charge Conditions - 17.5mA for 16 hours at 20C
Service Life - 500 cycles
Weight - 42.5g
Dimensions - 15.7mm x 26.5mm x 48.5mm
BIN - 825