LC-X1228P Panasonic - BSG, LC-X1228P Datasheet - Page 19

• Manufacturer Part Number: LC-X1228P
• Description: BATT SEALED LEAD ACID 12V 28AH
• Manufacturer: Panasonic - BSG
• Series: LCr

Specifications of LC-X1228P

• Voltage - Rated: 12V
• Capacity: 28Ah
• Size / Dimension: 6.47" L x 4.92" W x 6.89" H (165mm x 125mm x 175mm)
• Termination Style: Nut/Bolt, M5
• Rechargeability: Yes
• Weight: 25 lbs (11.3kg)
• For Use With: BVW122250003N - BATTERY CHG UNIV 12VDC @ 2.25A271-2390 - BATTERY CHG UNIV 12VDC @ 2.25A271-2386 - BATTERY CHG UNIV 12VDC @ 1.2A271-2385 - BATTERY CHG UNIV 12VDC @ 600MA271-2382 - BATTERY CHG UNIV 12VDC @ 500MA271-2381 - BATTERY CHG UNIV 12VDC @ 500MA271-2380 - BATTERY CHG 120VAC 12VDC @ 500MA271-2378 - BATTERY CHG 120VAC 12VDC @ 300MAPATC-08 - BATT CHARGER 12V 1.5A X 2 UNITPATC-03 - BATTERY CHARGER 12 VOLT 1.5 AMP
• Lead Free Status / RoHS Status: Contains lead / RoHS compliant by exemption
• Other names: LC-X1228; LC-XB1228; LC-XB1228P; LCX1228P; P049

CHARACTERISTICS - CONTINUED
e) Open circuit voltage vs. residual capacity
Residual capacity of the battery can be roughly
estimated by measuring the open circuit voltage as
shown in the Figure.
Open circuit voltage vs. Residual capacity 77°F (25°C)
Recommended temperature ranges for charging,
discharging and storing the battery are tabulated
below.
a) Cycle life
Cycle life (number of cycles) of the battery is depen-
dent on the depth of discharge in each cycle. The
deeper the discharge is, the shorter the cycle life
(smaller number of cycles), providing the same
discharge current. The cycle life (number of cycles)
of the battery is also related to such factors as the
type of the battery, charge method, ambient tempera-
ture, and rest period between charge and discharge.
Typical cycle-life characteristics of the battery by
different charge/discharge conditions are shown by
the chart to the right.
This data is typical and tested at a well-equipped
laboratory in a controlled environment.
Cycle times are different for each battery model.
Cycle times can also differ from this data when using
batteries under real conditions.
Temperature conditions
Battery life
7.00
6.75
6.50
6.25
6.00
5.75
5.50
5.25
5.00
Discharge
Storage
Charge
0
20
Residual capacity (%)
40
5 F (-15 C) ~ 122 F(50 C)
5 F (-15 C) ~ 104 F (40 C)
32 F (0 C) ~ 104 F (40 C)
(Temperature: 25˚C)
60
80
VRLA BATTERIES PAGE 18
100
14.0
13.5
13.0
12.5
12.0
11.5
11.0
10.5
10.0
Cycle life vs. Depth of discharge
120
100
80
60
40
20
0
(3h discharge)
200
100%
Charge/discharge cycle (number of cycles)
(1.5h discharge)
400
(Test condition)
Discharge : 0.25 CA corresponding resistance
Cut-off voltage: Discharge depth 100% only 1.75V/cell
Charge : 14.7 V constant-voltage control
Maximum current: 0.4 CA
6 hours
Temperature : 25˚C
50%
600
800
1000
AUGUST 2003
Depth of discharge
(0.9h discharge)
30%
1200
1400