Button battery cr2032: capacity 210mAh, working current 0.2mA, continuous current 3mA, pulse current 20mA.
Now there is a system that uses cr2032 to supply power. The working current of the system is about 1.5mA. In addition, there is a pulse current of 7mA every 8s (at this time, the total working current is about 8.5mA=1.5+7), and the duration of the pulse current is about 20ms.
Ask: How long is the working time of a button battery and how to calculate it? Thank you!
Gibson 发表于 November 24, 2020
On for 20ms, off for 8 seconds, for 7ma, 8.02 seconds
Then convert to hours
1 hour, 3600 seconds, 448 times of driving, total power consumption 3136mA
Then get approximately 0.87mah
Terence 发表于 November 24, 2020
Montgomery 发表于 November 24, 2020
210/2.37=88.6 hours approximately.
The actual working condition is estimated to be discounted at 20%, which is estimated to be around 70 hours.
