Device description
4.7.10 Battery
A lithium battery (3 V, 1000 mAh) ensures the retention of the internal real-time clock (RTC) and is located on the
bottom of the device as a battery tray. The self-discharge time of the battery is at least 8 years
2)
. The battery is
subject to wear and should be replaced regularly (at least after the specified service life) by changing the battery.
The battery state is determined by the system immediately after the device is switched on and subsequently every
24 hours. During the measurement, the battery is subjected to a brief load (approx. 1 second) and then assessed.
Battery state
Explanation
N/A
The hardware or firmware used is too old and does not support readout.
GOOD
Data retention is ensured.
BAD
As soon as the battery capacity is recognized as BAD (insufficient), the battery compartment must be replaced.
As soon as the battery capacity is recognized as insufficient, the battery compartment must be replaced with
replacement part
"Changing the battery" on page 65
.
Data is retained by a capacitor in order to avoid data loss during battery replacement.
Information:
The self-discharge time when changing the battery is approx. 2 minutes.
2)
At 50°C, 8.5 μA for the components being supplied and self-discharge of 40%).
34
Power Panel C80 User's manual V1.02
