Panasonic LC-P1228AP, 12V Ah lead acid battery LC-P1228AP データシート

8.

9

M5

16

5.

6

1

M5

Nominal voltage

12V

Nominal capacity (20 hour rate)

28Ah

Dimensions

Length

165mm

Width

125mm

Height

175mm

Total Height

 LC-X1228P: 179.5mm
 LC-X1228AP: 175mm

Approx. mass

11kg

Terminal

M5 Bolt and Nut type/

M5 threaded post

1

3

5

10

30

60

3

5

10

20

30

)

et

u

ni

m(

)r

u

o

h(

40 °C

25 °C

0 °C

-15 °C

0.3

1

3

10

30

100

Discharge current (A)

e

gr

a

h

c

si

d 

f

o 

n

oi

t

ar

u

D

Capacity

(25°C)

20 hour rate
10 hour rate

5 hour rate
1 hour rate

28.0Ah
26.5Ah
25.0Ah
21.0Ah

Internal resistance

Fully charged battery

(25°C)

8m

Ω

Temperature dependency 

of capacity (20 hour rate)

40°C
25°C

0°C

-15°C

102%
100%

85%
65%

Self discharge 

(25°C)

After 3 months
After 6 months

After 12 months

91%
82%
64%

For standby power supplies.
Expected trickle design life: 10 – 12 years at 20°C according to Eurobat.

Battery case resin: 

standard (UL94HB)

Contents indicated (including the recycle marking, etc.) 

are subject to change without notice.

9.6V

1423

1160

865

664

585

410

304

260

159

129

91.6

74.1

61.1

40.8

31.8

16.8

14.0

9.9V

1357

1093

849

654

579

404

294

254

156

128

90.4

72.9

59.9

51.6

31.8

16.8

14.0

10.2V

1301

1026

818

643

567

397

294

251

155

127

89.3

71.7

59.9

51.6

31.8

16.8

14.0

10.5V

1201

976

784

621

545

386

282

247

154

126

88.1

71.7

59.9

51.6

31.8

16.8

14.0

10.8V

1052

903

773

610

539

374

255

218

149

118

84.5

70.5

59.9

50.4

31.8

16.8

13.9

9.6V

128

104

77.2

57.7

50.4

35.0

25.9

22.1

13.5

10.9

7.7

6.2

5.1

3.4

2.65

1.40

1.17

9.9V

122

98.0

75.8

56.9

49.9

34.5

25.0

21.6

13.2

10.8

7.6

6.1

5.0

4.3

2.65

1.40

1.17

10.2V

117

92.0

73.0

55.9

48.9

33.9

25.0

21.3

13.1

10.7

7.5

6.0

5.0

4.3

2.65

1.40

1.17

10.5V

108

87.5

70.0

54.0

47.0

33.0

24.0

21.0

13.0

10.6

7.4

6.0

5.0

4.3

2.70

1.40

1.17

10.8V

94.6

81.0

69.0

53.0

46.5

32.0

21.7

18.5

12.6

10.0

7.1

5.9

5.0

4.2

2.65

1.40

1.16

Trickle use

Control voltage: 13.6 - 13.8V; Initial current: 4.2A or smaller

0

20

40

60

80

100

120

0

2

4

6

8

10

12

14

16

18

20

Storage Period (Month)

)

%(

oi

t

a

R 

n

oi

t

n

et

e

R 

yti

c

a

p

a

C

5 °C
(41 °F)

25 °C
(77 °F)

30 °C
(86 °F)

40 °C
(104 °F)

Discharge current

1.4A - 

5.6A

5.6A - 

14A

14A - 

28A

28A - 

56A

56A - 

84A

Cut off voltage (V)

10.5

10.2

9.9

9.3

8.7

0

20

40

60

80

100

120

140

160

0

4

8

12

16

20

Charge Time (h)

)

%( 

yti

t

n

a

u

Q 

e

gr

a

h

C

0

2

4

6

8

10

12

14

16

)

V( 

e

g

atl

o

V 

yr

et

t

a

B

          100 % (0.05 CA*20H)
          50 % (0.05 CA*10H)

   Charge Voltage 13.65 V
   (2.275 V / Cell)
   Charge Current 0.15 CA

0.3

0.2

0.1

0

Battery Voltage

Charge Current

Charge Quantity (to-Discharge Quantity)

)

A

C( 

t

n

er

r

u

C 

e

gr

a

h

C

1

2

3

0

20

40

60

80

100

120

)

%(

yti

c

a

p

a

C

Battery temperature (°C)

-20

-10

0

10

20

30

40

50

0.05 CA
0.1 CA
0.2 CA
0.5 CA
1 CA
2 CA
3 CA

5

6

7

8

9

10

11

12

13

14

15

(minute)

(hour)

Duration of discharge

)

V(

e

g

atl

o

v l

a

ni

mr

e

T

0

1

20

10

4

2

40

60

2

4

6

8 10

20

40

6

8

1.4 A

2.8 A

7 A

14 A

84 A

28 A

Terminal type

(option):

LC-X1228P 

M5 bolt and nut

LC-X1228AP:

M5 threaded post

 This battery is also available with a flame retardant battery case resin (UL94 V-0). 

0.1

1

10

100

10

20

30

40

50

0

60

Temperature (°C)

)

sr

a

e

Y( 

efi

L 

e

ci

vr

e

S

Charging Voltage

䚭㻃

 2.275 V / Cell