VRLA BATTERIES
AUGUST 2003
VALVE-REGULATED LEAD ACID BATTERIES: INDIVIDUAL DATA SHEET
This information is generally descriptive only and is not intended to make or imply any representation, guarantee or warranty with respect to any cells and batteries. Cell and battery designs/specifications are subject
to modification without notice. Contact Panasonic for the latest information.
For main power supplies.
Cycle long life type.
LC-XC1228AP
Specifications
Characteristics
Dimensions (mm)
Discharge characteristics 77°F (25°C)
(Note)
Duration of discharge vs. Discharge current
(Note)
Photo/Label for reference only.
(Note) The above characteristics data are average values obtained
within three charge/discharge. Cycles not the minimum values.
Terminal type: LC-XC1228AP: M5 threaded post
Battery case resin: Standard (UL94HB) Color is black.
2000
1000
100
10
1
1
3
5
10
30
50
100
Dur
ation of Discharge (min
utes)
Discharge Current (A)
0˚C
25˚C
40˚C
6.43 (163.4)
0.39 (9.8)
4.88 (124)
6.890
±0.079 (
175±
2)
0.33 (8.3)
0.09 (2.2)
0.47 (12)
4.921±0.079 (125±2)
0.47 (12)
6.496±0.079 (165±2)
5.28 (134)
3.54 (90)
1.79 (45.5)
+
0
1
10
100
1000 2000
14.4
13.8
13.2
12.6
12.0
11.4
10.8
10.2
9.6
9.0
8.4
7.8
7.2
Duration of Discharge (minutes)
T
e
rminal V
oltage
(V)
1.4A
7A
28A
Nominal Voltage
Rated Capacity (20 hour rate)
12V
28Ah
6.496 inches (165 mm)
4.921 inches (125 mm)
6.890 inches (175 mm)
7.07 inches (179.5 mm)
24.34 lbs. (11 kg)
LC-XC1228AP
Dimensions
Standard Terminals
and Resin
Length
Width
Height
Total Height
Approx. mass
UL94HB M5 Threaded Post
Capacity
(note)
77˚F (25˚C)
Self discharge
77˚F (25˚C)
14A
102%
100%
85%
65%
20 hour rate (1.4A)
10 hour rate (2.65A)
5 hour rate (4.8A)
1 hour rate (18A)
1.5 hour rate discharge
Cut-off voltage 10.5 V
28Ah
26.5Ah
24Ah
18Ah
Internal Resistance
Fully charged battery
77˚F (25˚C)
Residual capacity
after standing 3 months
Residual capacity
after standing 6 months
Residual capacity
after standing 12 months
91%
82%
64%
Approx. 10m
Ω
11.2 A or smaller
Initial current
Control voltage
14.5V to 14.9V
(per 12V cell 25˚C)
104˚F (40˚C)
77˚F (25˚C)
32˚F (0˚C)
5˚F (-15˚C)
Temperature
dependency
of capacity
(20 hour rate)
Charge
Method
(Constant
Voltage)
Cycle use
(Repeating
use)
