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INDIVIDUAL DATA SHEETS

LC-X1220P / LC-X1220AP

For main and standby power supplies. Expected trickle life: Approx. 6 years at 25°C, Approx. 10 years at 20°C.

Dimensions (mm)

Terminal Type: LC-X1220P: M5 bolt and nut LC-X1220AP: M5 threaded post

1 8 1 2 + -

76 22 2 + -

5

112.5

5

5.5 12.5

1

11

153.5 167 2

-

+

Labels will vary, see page 72 for example of labels.

(a) The photo and dimensions represent LC-X1220P

179.5

74.5

Specifications

Nominal voltage Nominal capacity (20 hour rate) Length Width Height Total Height Approx. mass Dimensions

Characteristics

12V 20Ah

181 mm 76.0 mm 167 mm 167 mm 6.6 kg

Battery case resin: Standard (UL94HB) (note) Discharge characteristics (25C)

Terminal voltage (V)

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

0

12

40A

60A

4 6810 (Minute)

20

20A

40 60

5A

2

4

2A

6 810 (Hour)

1A

20

40

(note) Capacity (25C)

Internal resistance

20 hour rate (1.2A) 10 hour rate (2.2A) 5 hour rate (3.8A) 1 hour rate (14.0A) 1.5 hour rate discharge Cut-off voltage 10.5 V Fully charged battery

(25C)

20.0Ah 18.0Ah 16.0Ah 12.0Ah

9.8A

A p p r o x . 1 1 m

Duration of Discharge

Duration of discharge vs. Discharge current

30

20 15

10

(note)

Temperature dependency of capacity (20 hour rate)

Self discharge

(25C)

40C 25C 0C

  • -

    15C

Residual capacity after standing 3 months Residual capacity after standing 6 months Residual capacity after standing 12 months

102 % 100 % 85 % 65 %

91%

82%

64%

Cycle use

Initial current

Charge

(Repeating

Control

Method

use)

voltage

(Constant

Initial current

Voltage)

Trickle use

Control

voltage

8.00 A or smaller 14.5V to 14.9V (per 12V cell 25C) 3.00 A or smaller 13.6V to 13.8 V (per 12V cell 25C)

Duration of discharge

(Hour)

(Minute)

5 4 3

2 1.5

1 50 40

30

20

10

5

0˚C

  • -

    15˚C

40˚C

25˚C

(Note) The above characteristics data are average values obtained within three charge/discharge. Cycles not the minimum values. (Note) For cycle use of the battery, please contact us in advance.

3

300 500 (mA)

1

3

5

10

(A) Discharge current

30

50

100

Sealed Lead-Acid Handbook, Page 60

January 2000

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