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Table 20. Battery specifications (continued)
Description
on using the Dell Power
Manager application. For
more information about
Dell Power Manager,
search in the Knowledge
Base Resource at
www.dell.com/support.
Coin-cell battery
CAUTION:
Operating and storage temperature ranges may differ among components, so operating or storing
the device outside these ranges may impact the performance of specific components.
CAUTION:
Dell recommends that you charge the battery regularly for optimal power consumption. If your
battery charge is completely depleted, connect the power adapter, turn on your computer, and then restart
your computer to reduce the power consumption.
Option one
Option two
time from 0% to
100% RSOC is 4
hours
● 16°C to 45°C
● 16°C to 45°C
normal express
charge
● 46°C to 50°C
● 46°C to
50°C maximum
allowable charge
time from 0% to
100% RSOC is 3
Standard Charge/
hours
Predominately AC
Standard Charge/
User Charge
Predominately AC
Method:
User Charge
● 0°C to 15°C
Method:
● 0°C to
15°C maximum
allowable charge
time from 0% to
● 16°C to 50°C
100% RSOC is 4
hours
● 16°C to
50°C maximum
allowable charge
time from 0% to
100% RSOC is 3
hours
Express Charge
Boost Charge
Method (Fast
Charge for Initial
35%):
● 16°C to 45°C
target charge time
from 0% to 35%
RSOC is 20 mins
for Accelerated
Charge
CR2032
CR2032
Option three
0% to 100% RSOC
time from 0% to
is 4 hours
100% RSOC is 4
hours
normal express
● 16°C to 45°C
charge
normal express
charge
maximum allowable
● 46°C to
charge time from
50°C maximum
0% to 100% RSOC
allowable charge
is 3 hours
time from 0% to
100% RSOC is 3
hours
Standard Charge/
Predominately AC
User Charge
Method:
maximum allowable
charge time from
● 0°C to
0% to 100% RSOC
15°C maximum
is 4 hours
allowable charge
time from 0% to
100% RSOC is 4
maximum allowable
hours
charge time from
● 16°C to
0% to 100% RSOC
is 3 hours
50°C maximum
allowable charge
time from 0% to
100% RSOC is 3
hours
Express Charge
Boost Charge
Method (Fast
Charge for Initial
35%):
● 16°C to 45°C
target charge time
from 0% to 35%
RSOC is 20 mins
for Accelerated
Charge
CR2032
Specifications of Latitude 5440
Option four
time from 0% to
100% RSOC is 4
hours
● 16°C to 45°C
normal express
charge
● 46°C to
50°C maximum
allowable charge
time from 0% to
100% RSOC is 3
hours
Standard Charge/
Predominately AC
User Charge
Method:
● 0°C to
15°C maximum
allowable charge
time from 0% to
100% RSOC is 4
hours
● 16°C to
50°C maximum
allowable charge
time from 0% to
100% RSOC is 3
hours
CR2032
23
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