Dell NOT21684 Owner's Manual page 28

Table 20. Battery specifications (continued)
Description
Operatin
g
Storage
Battery operating time
Battery charging time
(approximate)
NOTE: Control
the charging time,
duration, start and
end time, and so on
using the Dell Power
Manager application.
For more information
on the Dell Power
Manager see, Me
and My Dell on
www.dell.com.
Option one
● Charge: 0°C to
45°C (32°F to
113°F)
● Discharge: 0°C to
70°C (32°F to
158°F)
-20°C to 65°C (4°F to
149°F)
Varies depending on
operating conditions
and can significantly
reduce under
certain power-intensive
conditions.
Express Charge
Method:
● 0°C to 15°C
maximum allowable
charge 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
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
Option two
● Charge: 0°C to 45°C
(32°F to 113°F)
● Discharge: 0°C to
70°C (32°F to 158°F)
-20°C to 65°C (4°F to
149°F)
Varies depending on
operating conditions and
can significantly reduce
under certain power-
intensive conditions.
Express Charge
Method:
● 0°C to 15°C maximum
allowable charge 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
Option three Option four
● Charge: 0°C to ● Charge: 0°C to
45°C (32°F to
113°F)
● Discharge: 0°C ● Discharge: 0°C
to 70°C (32°F to
158°F)
-20°C to 65°C (4°F -20°C to 65°C (4°F
to 149°F) to 149°F)
Varies depending Varies depending
on operating on operating
conditions and can conditions and can
significantly reduce significantly reduce
under certain power- under certain power-
intensive conditions. intensive conditions.
Express Charge Express Charge
Method: Method:
● 0°C to ● 0°C to
15°C maximum
allowable charge
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 ● 46°C to
50°C maximum
allowable charge
time from 0% to
100% RSOC is 3
hours
Standard Charge/ Standard Charge/
Predominately AC Predominately AC
User Charge User Charge
Method: Method:
● 0°C to ● 0°C to
15°C maximum
allowable charge
time from 0% to
100% RSOC is 4
hours
● 16°C to ● 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
Specifications of Latitude 5540
45°C (32°F to
113°F)
to 70°C (32°F to
158°F)
15°C maximum
allowable charge
time from 0% to
100% RSOC is 4
hours
normal express
charge
50°C maximum
allowable charge
time from 0% to
100% RSOC is 3
hours
15°C maximum
allowable charge
time from 0% to
100% RSOC is 4
hours
50°C maximum
allowable charge
time from 0% to
100% RSOC is 3
hours
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