Ebl 9V Li-ion Rechargeable Batteries 600mAh

Capacity: 600mAh 
Nominal Voltage: Approximately 9V
Recharge Cycles: Up to 1,200 cycles
Self-Discharge: Low — retains 75–80% capacity after 3 years of storage
Memory Effect: None — can be charged at any time without capacity loss
Common Uses: Smoke alarms/detectors, professional audio equipment (e.g., wireless microphones, guitar pedals), medical devices, multimeters, game controllers, toys, digital cameras, and walkie-talkies
Charging: Requires a dedicated 9V Li-ion charger .

This battery provides longer runtime in high-drain devices.