3.7V ,650mAh Li-ion battery Model No. Rechargeable lithium battery Nominal Voltage 3.7V Capacity 650mah Jacket PVC Shrink tube Specification: Discharging current(Std): 0.2C Discharging current(Max): 1C Charge current: 0.5C Max charge current:1C Discharge cut-off voltage: 3.0V the over-discharge detection voltage of PCM Charging method: Charge with constant current 1C to 4.2V , then charge with constant voltage 4.2v till charge current less than 0.01 Main Characteristics: High energy density, good capacity, light and thin, safe and reliable(with PCM),long circle life,no memory, environmental , stable performance, reasonable low price, capacity and size could be customerized Operation Temperature: Charge: 0ºC-44ºCC-44ºCrdm;CC-44ºC Discharge: -20ºC-60ºC;C-60ºCdm;C;C-60ºC Storge Temperature: Less than >3months:-20ºC-45ºC Less than 1 year: -20ºC-25ºC -20ºC-25ºC-25ºC -20ºC-25ºC Protect Performance: Contain PTC heat-fuse Cycle Life(80% prime capacity): >500cycles Charging Attention: Charging current and charging voltage should be less than specified in the product specification The charger shall be designed to comply with specification It is danageous that charging with higher current or voltage than product specification may cause damage to the cell electrical mechanical satety performance . Application: 1. Memory backup: CMOS memory, RTC(real time clock) and computer backup. 2. AMR utility meters: Electricity meter, gas meter and water meter etc. 3. Wireless alarm sensors: Smoke alarm systems, temperature monitors etc. 4. Remote monitor systems: GPS, sea buoys, lifejacket lights, lifecraft lights, cargo-locating systems etc. 5. Automotive and electronics: Automotive security systems, tire-pressure monitoring systems etc. 6. Electronics toll tags: Toll gates 7. Military electronics: Radio communication, night vision equipment, tracking and positioning systems etc.