描述

No	ITEM	TEST METHODS	STANDARD
1	Dimensions	Using vernier caliper (accuracy≥0.02) while avoiding short-circuit	Diameter	24.5 (-0.20) mm
1	Dimensions		Height	7.7 (±0.1) mm
2	Off-load voltage	Using multimeter (accuracy≥0.25%) internal resistance≥1MΩ	≥3.20 v
3	Instantaneous short-circuit current	Time of short-circuit should be less than 0.5 second and avoid repeated test within half an hour	≥250 mA
4	Appearance	Eyeballing	Bright, clean, no rust, no leakage, And no flaw
5	Capacity	Continuously discharge with load 4.7kΩ, temperature at 20~25℃, humidity at 65±20% till 2.0v end-voltage (for fresh battery only: within 3 months )	≥1480 h
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 test	Stored under temperature (50℃) for 10 days	No leakage allowed
8	Over discharge Test	After 2.0v end-voltage, continuously discharged for 5 hours	No leakage allowed

CR2477 Lithium Button Cell Battery