Dell Precision 5540 Manuale tecnico - Pagina 22
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Table 19. Battery specifications (continued)
Description
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.
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.
22
Specifications of Latitude 5540
Option one
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
CR2032
Option two
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
CR2032
Option three
Option four
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
is 20 mins
for Accelerated
Charge
CR2032
CR2032
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