Specifications
CR1220Nominal voltage 3.0v
Nominal capacity 40.0MAH
SUGGESTIONS AND CAUTIONS
Install batteries correctly.
Ensure the contact points to be clean and conductive.
Do not mix different types, different brands batteries to serve together.
Do not heat, recharge the batteries.
Do not dispose of the batteries in fire.
Keep away from the small children, if swallowed promptly see doctor.
Pay attention to the producing date.
No | ITEM | TEST METHODS | STANDARED | |
1 | Dimensions | Using vernier caliper (accuracy≥0.02) while avoiding short-circuit | Diameter | 12.5 (-0.20) mm |
Height | 2.0(-0.20) mm | |||
2 | Off-load voltage | Using multimeter (accuracy≥0.25%) internal resistance≥1MΩ | ≥3.20v | |
3 | Instantaneous short-circuit current | Time of short-circuit should be less than 0.5 second and avoid repeated test within half an hour | ≥100 mA | |
4 | Appearance | Eyeballing | Bright, clean, no rust, no leakage, And no flaw | |
5 | Capacity | Continuously discharge for 8 hours with load 15kΩ, temperature at 20~25°C, humidity at 65±20% till 2.0v end-voltage (for fresh battery only: within 3 months ) | ≥200h | |
6 | Vibration test | Put battery on the platform of the vibrations machine, start the machine and adjust the frequency form 10 times per minute to 15 times per minute. keep it running for an hour | Characteristics keep stability | |
7 | Leakage at high temperature | Stored under temperature (45°C) for 30 days | Leakage rate≤0.5% | |
8 | Over discharge Test | After 2.0v end-voltage, continuously discharged for 5 hours | No leakage allowed | |
