User`s manual

Maintenance and inspection Battery life and replacement procedure
10 – 6
● Q02(H)-, Q06H-, Q12H- or Q25HCPU (first digits of serial No. is "05010..." or earlier)
Tab. 10-7: Battery (Q6BAT) lives of Q02(H)-, Q06H-, Q12H- or Q25HCPU (first digits of serial
No. is "05010..." or earlier)

The power-on time ratio indicates the ratio of programmable controller power-on time to one day (24 hours).
When the total power-on time is 12 hours and the total power-off time is 12 hours, the power-on time ratio is
50 %.

At 70 °C.

At 40 °C.
CPU
Power-on
time ratio

Battery life (Q6BAT)
Guaranteed value

Actual service value

After SM52 turned on
Q02CPU 0 % 5433 hours
(0.62 years)
43800 hours
(5 years)
120 hours (5 days)
30 % 7761 hours
(0.88 years)
50 % 10866 hours
(1.24 years)
70 % 18110 hours
(2.06 years)
100 % 43800 hours
(5 years)
Q02HCPU
Q06HCPU
0 % 2341 hours
(0.26 years)
14550 hours
(1.66 years)
120 hours (5 days)
30 % 3344 hours
(0.38 years)
20786 hours
(2.37 years)
50 % 4682 hours
(0.53 years)
29100 hours
(3.32 years)
70 % 7803 hours
(0.89 years)
43800 hours
(5 years)
100 % 43800 hours
(5 years)
Q12HCPU
Q25HCPU
0 % 1260 hours
(0.14 years)
6096 hours
(0.69 years)
48 hours (2 days)
30 % 1800 hours
(0.20 years)
8709 hours
(0.99 years)
50 % 2520 hours
(0.28 years)
12192 hours
(1.39 years)
70 % 4200 hours
(0.47 years)
20320 hours
(2.31 years)
100 % 43800 hours
(5 years)
43800 hours
(5 years)