B&R MAPPC700A-ENG, User Manual

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Technical data • Entire device
Chap
ter 2
Te
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ica
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89 Panel PC 700 with 945GME N270 CPU board User's Manual V 1.16
2.4.17 Battery
The lithium battery (3 V, 950 mAh) buffers the internal real-time clock (RTC) as well as the
individually saved BIOS settings and is located behind the black cover. The buffer duration of the
battery is at least 4 years (at 50°C, 8.5 μA current requirements of the supplied components and
a self discharge of 40%). The battery is subject to wear and should be replaced regularly (at least
in accordance with the specified buffer duration).
For more on changing the lithium battery, see chapter 7 "Maintenance / Servicing", section 1
"Changing the battery", on page 453.
For technical information on the lithium battery, see chapter 6 "Accessories", section 2
"Replacement CMOS batteries", on page 374.
Battery status evaluation
The battery status is evaluated immediately following start-up of the device and is subsequently
checked by the system every 24 hours. The battery is subjected to a brief load (1 second) during
the measurement and then evaluated. The evaluated battery status is displayed in the BIOS
Setup pages (under Advanced - Baseboard monitor) and in the B&R Control Center (ADI driver),
but can also be read in a customer application via the ADI Library.
Battery
Battery
Type
Removable
Service life Renata 950 mAh
Yes, accessible from the outside
4 years
1)
1) At 50°C, 8.5 μA of the supplied components and a self discharge of 40%.
Accessories Short description
0AC201.91 Lithium batteries, 4 pcs .
Lithium batteries, 4 pcs., 3 V /
950 mAh, button cell
4A0006.00-000 Lithium battery, 1 pc.
Lithium battery, 1 pc., 3 V / 950 mAh,
button cell
Table 46: Battery
Battery status Meaning
N/A Hardware, i.e. firmware used is too old and does not support read.
GOOD Data buffering is guaranteed
BAD Data buffering is guaranteed for approx. another 500 hours from the point in time that the battery capacity is
determined to be BAD (insufficient).
Table 47: Meaning of battery status