产品特点 FEATURES

1 Brand: Seiko Instruments Inc., a trusted manufacturer of electronic components

2 Type: Coin-type (button) MS series lithium rechargeable battery

3 Nominal specifications: 3.0V nominal voltage, 11mAh nominal capacity (9.3mAh rated capacity after charging from 3.1V to 2.0V)

4 Physical dimensions: Diameter 9.5mm, height 2.1mm, net mass 0.47g—compact and lightweight for small devices

5 Operating temperature range: -20°C to 60°C, recommended usage temperature 0°C to 30°C

6 Charging parameters: Recommended charging voltage 3.1V, max charging current 0.5mA (at 3V battery voltage), 10mA (at 0V)

7 Discharging parameters: Max discharging current 0.5mA, standard discharging current 0.05mA, end-of-discharge voltage 2.0V

8 Durability: Supports over 1000 charge/discharge cycles at 20% depth of discharge (DOD) or over 100 cycles at 100% DOD

9 Safety compliance: UL1642 certified, leakage resistance up to level S3 (no significant leakage affecting performance)

10 Reliability: High temperature storage (60°C for 20 days) maintains minimum capacity of 8.2mAh; float charge at 60°C for 20 days keeps capacity ≥8.2mAh and internal impedance ≤300ohm

使用场景 APPLICATIONS

1 Compact electronic devices requiring small-form-factor rechargeable power: wristwatches (smart or analog), fitness trackers, activity bands

2 Portable medical equipment: blood glucose monitors, digital thermometers, small diagnostic devices

3 Home and personal electronics: small remote controls (toys, appliances), calculators, electronic key fobs, access control cards

4 Other miniaturized devices: portable audio players, compact digital cameras, wearable tech accessories

注意事项 PRECAUTIONS

1 Charging safety: Avoid high current/voltage charging; use recommended 3.1V voltage and 0.2mA current to prevent swelling, fire, or bursting

2 Handling precautions: Do not heat, disassemble, or dispose of in fire; do not solder/weld directly to the battery (risk of overheating and leakage)

3 Short-circuit prevention: Ensure + and - terminals do not touch metal materials to avoid short-circuiting (may cause fire, heat, or leakage)

4 Installation: Do not reverse polarity (+/-) when inserting into devices; use spring terminals with nickel/gold plating and contact force ≥0.5N

5 Storage: Keep in 10-30°C environment with humidity ≤60%RH; avoid direct sunlight and high-temperature areas

6 Inspection: Perform incoming inspection within 30 days of receipt; notify Seiko immediately if defective products are found

7 Child safety: Keep away from children (risk of swallowing); if swallowed, seek medical attention right away

8 Leakage response: If leakage or strange smell occurs, keep away from fire to prevent electrolyte ignition

MS920SE-PDF数据手册-参考资料