Publication No. HRMCR11 Rev. B.0
About This Manual 59
External Battery Input
Figure 20: Battery removal
Note:
If
exchanged by customer, please use same type for replacement and
ensure conect polarization.
For op em ting without battery please check the folloThing description of the
external battery input
.
Battery removal and replacement
Locate battery on the computer. Reference the product manual if it is not easily
loc.ated. On some of the dual slot SB Cs, the top board may need to be removed
to make it easier to remove the battery. Once the battery is lo
c
.ated
,
take a non
conductive tool and push at the back of the battery
h
o
l
der
.
Gentl
y
apply
pressure in order to not break the socket
.
The battery should slide forward out
of the holder. Pressure can be alternated between the two sides to get the
battery to slide out of the socket. The battery should slide forward enough that
it could be removed from the
s
ocket
.
A new battery can be installed by sliding
it into the holder. Make sure to observe correct po
l
arity
.
VBATIN input ranges 2.4 V to 3.3 V
,
max. Curre
n
t
(@
3.0 V; 35 °C)
5
µA
Wit
h
o
u
t an onboard battery
(
Styl
es
6 or 8) it is recommended to use an external
supply cow1ected to this input. This voltage supplies the real tin1e clock
.
Witho
u
t battery and without this supply voltage, the real tin1e dock oscillator
has to be s
t
arted at each power up. T11is time gets longer when operating at
lower temperatures and can be up to around 30 seconds (at -40 °C). At
n
omial
ambient temperanue
s
this delay is below one
s
econd
.
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