LP12-7.8 (12V7.8AH) 

Germany

t

est ed

9

VdS

Approx Weight

Max. Discharge Current

Internal Resistance

Operating Temp.Range

Nominal Operating Temp. Range

Self Discharge

Terminal

Container Material

12V 

Leoch LP series batteries may be stored for up to 6 months

0 0

at 25 C(77 F) and then a freshening charge is required.
For higher temperatures the time interval will be shorter.  

Specification

Cycle Use

Standby Use

Initial Charging Current less than 2.34A.Voltage 

0 0 

0

14.4V~15.0V at 25 C(77 F)Temp. Coefficient -30mV/ C

No limit on Initial Charging Current Voltage 

0 0 

0

13.5V~13.8V at 25 C(77 F)Temp. Coefficient -20mV/ C

Capacity affected by 

Temperature

103%
100%

86%

7.8AH 

Length

Width

Container Height

Total Height (with Terminal)

Rated Capacity

ABS

T1 / T2

117A (5s)

Approx 18m

Ù

0

0

25

3 C (77

5 F )

All purpose

Uninterruptable Power Supply (UPS)

Electric Power System (EPS)

Emergency backup power supply

Emergency light 

Railway signal 

Aircraft signal

Alarm and security system

Electronic apparatus and equipment

Communication power supply

DC power supply

Auto control system

1

Approx  2.5 kg (5.51lbs)

LP SERIES-General Purpose 

7.80 AH/0.390A

7.28 AH/0.728A

6.50 AH/1.30A

5.7 AH/1.90A

4.74 AH/4.74A

o o 

40 C    (104 F)

o o 

25 C    (  77 F)

o o 

0 C      (  32 F)

151 2mm (5.95 inches)

65 1mm (2.56 inches) 

93.5 1mm (3.68 inches)

99 1mm (3.90 inches)

LP12-7.8(12V

7.8AH)

MH26866

MADE IN CH

INA

LEOCH BATTE

RY CO.,LTD.

Warning:

Risk of fire, 

explosion, o

r burns. Do n

ot disassem

ble,

O

heat above t

he 50 C, or i

ncinerate.

Maintenance

-free Sealed L

ead-acid Bat

tery

  CONSTAN

T VOLTAG

E CHARGE

         Non-spillable

BATTERY MUST B

E RECYCLED

Standby     u

se:           13

.5-13.8         

       V

Cycle         u

se:          14.

4-15.0          

     V

Initial    curre

nt:           Les

s  than         2

.34 A

Applications

0

0

(20hr ,1.80V/cell,25 C/77 F)

0

0

(10hr,1.80V/cell,25 C/77 F)

0

0

(5hr,1.75V/cell,25 C/77 F)

0

0

(3hr,1.75V/cell,25 C/77 F)

0

0

(1hr,1.60V/cell,25 C/77 F)

0

0

Discharge : 

-

15

50 C (5

122 F)

0

0

Charge      :    0

40 C (32

104 F)

0

0

Storage     : 

-

15

40 C (5

104 F)

Nominal Voltage

Nominal Capacity(20HR)

  Dimensions

1.85V/cell

1.80V/cell

1.75V/cell

1.70V/cell

1.65V/cell

1.60V/cell

5min

10min

15min

30min

45min

1h

2h

3h

4h

5h

6h

8h

10h

20h

20min

0

0

Constant Current Discharge (Amperes) at 25  C (77 F )

F.V/Time

17.9

13.0

11.1

9.4

6.88

5.03

4.01

2.38

1.78

1.44

1.22

1.06

0.842

0.697

0.383

21.4

15.2

12.5

10.2

7.4

5.35

4.27

2.50

1.85

1.51

1.27

1.10

0.873

0.728

0.390

24.0

16.6

13.4

10.8

7.7

5.56

4.43

2.57

1.90

1.54

1.30

1.12

0.886

0.739

0.398

26.1

17.7

14.2

11.3

8.0

5.71

4.52

2.63

1.94

1.57

1.32

1.14

0.905

0.749

0.403

28.4

18.8

14.9

11.8

8.3

5.89

4.64

2.68

1.98

1.60

1.34

1.16

0.917

0.757

0.406

29.9

19.7

15.4

12.1

8.5

6.04

4.74

2.74

2.02

1.63

1.37

1.18

0.932

0.768

0.413

5min

10min

15min

30min

45min

1h

2h

3h

4h

5h

6h

8h

10h

20h

20min

0

0

Constant Power Discharge (Watts/cell) at 25  C (77 F )

F.V/Time

1.85V/cell

1.80V/cell

1.75V/cell

1.70V/cell

1.65V/cell

1.60V/cell

33.7

24.8

21.4

18.3

13.4

9.9

7.90

4.71

3.54

2.88

2.45

2.12

1.69

1.41

0.773

40.1

28.8

24.0

19.8

14.4

10.4

8.38

4.93

3.67

3.00

2.53

2.20

1.75

1.46

0.785

44.4

31.2

25.4

20.7

14.9

10.8

8.68

5.07

3.75

3.05

2.58

2.23

1.77

1.48

0.797

47.7

32.9

26.7

21.5

15.3

11.0

8.78

5.14

3.81

3.09

2.61

2.26

1.79

1.49

0.800

50.9

34.2

27.6

22.1

15.7

11.3

8.93

5.18

3.84

3.12

2.63

2.28

1.80

1.49

0.802

52.4

35.1

28.0

22.4

15.9

11.4

9.06

5.27

3.90

3.16

2.66

2.30

1.82

1.50

0.812

2

Dimensions 

T1 Terminal

Unit: mm [inches]

4.75(0.187)

3.2(0.126)

6.35(0.25)

0.83(0.033)

9

3

.5

1

9

9

1

4

3

6

5

1

151 1

Storage Time(Months)

R

em

ai

ni

ng

 C

ap

ac

ity

(%

)

8

10

12

0

4

6

60

80

100

2

20

40

0

25 C

0

30 C

0

40 C

0

10 C

A

B

C

0.5

Battery temperature

1

2

3

4

5

6

8

10

Charging voltage :

2.25V/cell

20

68

0

C

30

86

40

104

50

122

O

F

Li

fe

 e

xp

ec

ta

nc

y(

ye

ar

)

Testing condition
Discharging:current 0.17C (FV 1.7V/cell);
Charging:current 0.25C max, voltage 2.45V/cell;
Charging volume:125% of discharged capacity.

C

a

p

c

it

y

(%

)

120

100

80

60

40

20

0

0           200        400        600       800      1000     1200

Number of Cycles 

Ambient Termperature:

o

o

25 C (77 F) 

100%
DOD

50%
DOD

30%
DOD

-20

-10

0

10

20

30

40

50

0

20

40

60

80

100

120

0.05C

A

0.1CA

0.2CA

1.0CA

2.0CA

3.0CA

0

Temperature( C)

C

a

p

a

c

it

y

%

No supplementary charge required
(Carry out supplementary charge before use if 100% capacity is required.)

Supplementary charge required before use.Optional charging way as below:
1.Charged for above 3 days at limted current 0.25CA and constant volatge 2.25V/cell.
2.Charged for above 20hours at limted current 0.25CA and constant volatge 2.45V/cell.
3.Charged for 8~10hours at limted current 0.05CA .

Supplementary charge may often fail to recover the capacity.
The battery should never be  left standing till this is reached.

A

B

C

Cycle Life in Relation to Depth of Discharge

Temperature Effects in Relation to Battery Capacity

Self Discharge Characteristics

Effect of Temperature on Long Term Float Life

Sales Office

Float Charging Characteristics

0

8

16

20

12

24

28

32

36

40

(V)

(XCA)

%

Charge
Volume

Charging 

Current

Charging 

Voltage

After 100% Discharge

Charge Voltage

(Constant 2.25v/cell)

Charging Current

4

12.0

13.0

14.0

15.0

11.0

0.10

0.15

0.20

0.25

0.05

0

0

10

20

30

50

40

60

70

80

90

100

120

110

Charging Time(hours)

0

0.10CA-2.25V/cell   temperature25 C

After 50% Discharge

Charged Volume

0.05C

0.093C

0.207C

0.4C

0.628C

1C

2C

3C

10

1

2

4

6

20

40

60

2

4

6

8 10

H

Min

8

20

8.0

9.0

10.0

11.0

12.0

13.0

   

V

12V
Battery

0

0

Temperature:25 C(77F)

Te

rm

in

al

 V

ol

ta

ge

(V

)

Discharge Time

Discharge Characteristics

China sales office:

Add: 19751 Descartes, Unit A, 

Foothill Ranch, CA 92610, USA 

Tel: 949-588-5853 

Fax: 949-588-5966 

E-mail: sales@leoch.us 

Http://www.leoch.us

North America sales office:

Europe sales office:

2

Add:5th Floor,Xinbaohui Bldg.,Nanhai Blvd.,

Nanshan,Shenzhen, China.  518052

Tel:+8 6-755-86036060 (100 lines) 

Fax: +86-755-26067269

E-mail:export@leoch.com

Http://www.leoch.com

Add: 9B Wheatstone Park, Waterwells

Business Park, Gloucester, GL2 2AQ. UK.

Tel: +44(0) 01452 729428

Fax: +44 (0)1452-690125 

E-mail: Sales.Europe@leoch.com

Add: No.53,Ubi Avenue 1, #03-21 Paya 

Ubi Industrial Park, Singapore 408934        

Tel:+ 65 6841 6629           

E

 -mail: sales.sg@leoch.com

Singapore sales office:

Add: Unit 3910,39/F,Cable TV Tower,No.9

Hoi Shing Road,Tsuen Wan, NT.H.K

Tel: +852 3578 6666        

E-mail: sales.hk@leoch.com 

HongKong  sales office: