Indulgence 16340 Li-Ion batteries:

• Rechargeable Indulgence 3.0V 1000mAhBattery
• Life cycle: 2000 times (Traditional Li-ion: 500 times)
• Working Voltage: 3.2V
• Peak Voltage: 3.6V
• Charging cut-off voltage: 3.6V
• Discharge cut-off voltage: 2.2V
• Please never overdischarge battery below 2.2V/Cell
• Charge the this battery with 16340 dual battery charger
• Capacity: 1000 mAh
• Maximum discharging rate: < 550 mA
• Maximum charge current: < 550 mA
• Cell's dimension: 17mm Dia. x 34.5mm H.
• Weight: 0.6 oz (18 grams).