User Manual

Table 20. Power adapter specifications (continued)
Description Values
Storage
-40°C to 70°C (-40°F to
158°F)
-40°C to 70°C (-40°F to
158°F)
-40°C to 70°C (-40°F to
158°F)
Battery
NOTE: 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.
Table 21. Battery specifications
Description Values
Type
3-cell lithium-ion 42 WHr,
ExpressCharge Boost
4-cell lithium-ion 63
WHr
3-cell lithium-ion 42
WHr LCL
4-cell lithium-ion 63 WHr
LCL
Voltage
11.40 VDC 15.20 VDC 11.40 VDC 15.20 VDC
Weight
(maximum)
0.18 kg ( 0.40 lb) 0.25 kg ( 0.55 lb) 0.18 kg ( 0.40 lb) 0.25 kg ( 0.55 lb)
Dimensions:
Height
5.70 mm (0.22 in.) 5.70 mm (0.22 in.) 5.70 mm (0.22 in.) 5.70 mm (0.22 in.)
Width
95.90 mm (3.78 in.) 95.90 mm (3.78 in.) 95.90 mm (3.78 in.) 95.90 mm (3.78 in.)
Depth
207.90 mm (8.19 in.) 238.00 mm (9.37 in.) 207.90 mm (8.19 in.) 238.00 mm (9.37 in.)
Temperature
range:
Operating
● Charge: 0°C to 50°C
(32°F to 122°F)
● Discharge:0°C to 70°C
(32°F to 158°F)
● Charge: 0°C to
50°C (32°F to
122°F)
● Discharge:0°C to
70°C (32°F to
158°F)
● Charge: 0°C to
50°C (32°F to
122°F)
● Discharge:0°C
to 70°C (32°F
to 158°F)
● Charge: 0°C to
50°C (32°F to
122°F)
● Discharge:0°C to
70°C (32°F to
158°F)
Storage
–20 °C to 60 °C (-4 °F to 140
°F)
–20 °C to 60 °C (-4 °F
to 140 °F)
–20 °C to 60 °C
(-4 °F to 140 °F)
–20 °C to 60 °C (-4 °F
to 140 °F)
Operating time Varies depending on operating
conditions and can significantly
reduce under certain power-
intensive conditions.
Varies depending on
operating conditions
and can significantly
reduce under
certain power-intensive
conditions.
Varies depending on
operating conditions
and can significantly
reduce under certain
power-intensive
conditions.
Varies depending on
operating conditions and
can significantly reduce
under certain power-
intensive conditions.
Charging time
(approximate)
From 0% up to 35% in
20 minutes (ExpressCharge
Boost), 2hr (Express charge),
3hr (Standard charge) (when
the computer is off)
NOTE: Control the
charging time, duration,
start and end time, and so
on using the Dell Power
From 0% up to
35% in 20 minutes
(ExpressCharge Boost),
2hr (Express charge),
3hr (Standard charge)
(when the computer is
off)
NOTE: Control
the charging time,
duration, start and
2hr ( Express
charge ), 3hr
( Standard charge)
(when the computer
is off).
NOTE: Control
the charging
time, duration,
start and end
2hr ( Express charge ),
3hr ( Standard charge)
(when the computer is
off).
NOTE: Control
the charging time,
duration, start and
end time, and so on
using the Dell Power
Specifications of Latitude 5520 21