Ni-Mh Battery Characteristics

Main features of Ni-MH batteries

Main features of Ni-MH batteries: charge characteristics, discharge characteristics, life cycle characteristics, storage characteristics and security characteristics

1.charge characteristics

Charge current, time temperature and other factors influence the charge characteristics of Ni-MH batteries. The charge voltage will rise when charge current increases and the charge temperature falls. Charge efficiency will change as the charge current, time and temperature change. In terms of quick charge, it is necessary to be equipped with the charge control system. Please refer to the following charging methods.

Typical Charge characteristics (The temperature influence the charge voltage) 

2.discharge characteristics
Discharge characteristics of Ni-MH battery will change as the discharge current and temperature change. In general, compared with the primary batteries the Ni-MH batteries have little change in the process of discharge. Although discharge current is very high, the damage of capacity is
neglectable. The "P" series batteries in Mike  is specially designed for meeting power tools which need high current discharge. In addition, our quick charge batteries with high capacity are specialized in R&D and production for satisfying the high capacity demand of high-tech installation.

3.Life cycle characteristics

The life cycle of Ni-MH battery is influenced on charge and discharge principles, temperature and methods. When charge and discharge according to IEC standard, the life cycle of charge and discharge will exceed 500. Different charge methods such as quick charge and charge in the operating will influence the real life cycle of batteries.

 Typical life cycle characteristics

4. storage characteristics

When Ni-MH batteries are stored under the condition of charge, the capacity will have losing (self-discharge) and the damage degree will increase when the temperature rises. Certainly the capacity losing will be recovered through charging. Although batteries are stored for so long time, the capacity will be recovered if the storage environment is appropriate.

5.security characteristics
If batteries used improperly, such as overcharge, short circuit and reversed charge led to higher internal pressure of the battery, a recoverable safety-vent valve will open in order to decrease the internal pressure so that prevent the battery from exploding.


The Specification of Ni-
Mh

Three specs of McNair Ni-MH batteries

(1). General type (Standard
)
Features
A.  Long life cycle
exceed 500 charge and discharge cycles
B.Avoid maintenance

Simple operation like primary batteries but avoid overcharging and overdischarging (-20+60)

C. Stable performance
low  can be applied to a large range of temperature
 

Applied examples A. Intercom, wireless phone
B Measuring tools, calculator

C. remote control auto and other power toys

D. Photographic light, searchlight, lawn light

E.Appliances: power shaver, recorder

(2)High capacity type
Features
A.Long life cycle
exceed 500 charge and discharge cycles
B.high current

To meet discharge in 5C (AAAAAA)、discharge in 10C SCCD)

C. To substitute 1.5V primary battery

Although its nominal voltage is 1.2V, this type of batteries can be completely applied to the equipment with 1.5V primary.

Applied examples A. Appliances: power shaver, recorder and so on

B.Earphone stereo system, CD player, radio, DVD, MP3, Digital Camera and other digital products wireless phone.

C.Measuring tools, calculator

(3)High power discharge type
Features: A. Excellent discharge performance at high current

Based on the rating capacity with 0.2C discharge,  discharge in 5C can reach 95% and  discharge 10C can reach 85%
B.Quick charge performance

charge in 1-3CmA current

C.Low Internal Resistance
D.Long life cycle and excellent reliability

Applied examples A. power tools: electric drills, screwdriver and electric saw and so on
B.Power toys:  electric auto, electric plans, electric bicycle, electric trochlea and so on.

C.Video cassette recorder

D.Other equipment in high power discharge

 


Model List

Specification Table of McNair NI-MH batteries

Model No.

Size

Dimension of Bare cell

Voltage
(V)

Internal resistance (m?)

Capacity
(
mAh)

Standard charge

Rapid charge

Weight(g)

Diameter
(mm)

Height
(mm)

Current
(
mA)

Time
(h)

Current
(
mA)

Time
(h)

MH-1/3AAA180P

1/3AAA

10.0

18.0

1.2

60

180

36

6

180

1.2

7

MH-2/3AAA 300L

AAA

10.0

28.5

1.2

45

300

60

6

300

1.2

9

MH-AAA600

AAA

10.0

44.5

1.2

35

600

120

6

600

1.2

12

MH-AAA700

AAA

10.0

44.5

1.2

35

700

140

6

350

2.4

13

MH-AAA750

AAA

10.0

44.5

1.2

30

750

150

6

375

2.4

14

MH-AAA800

AAA

10.0

44.5

1.2

30

800

160

6

400

2.2

14

MH-2/3AA 650L

2/3AA

14.1

28.5

1.2

30

650

130

6

650

1.2

18

MH-4/5AA 1200L

4/5AA

14.1

42.5

1.2

28

1200

240

6

1200

1.2

20

MH-AA1500

AA

14.1

50.0

1.2

25

1500

300

6

1500

1.2

25

MH-AA1600

AA

14.1

50.0

1.2

25

1600

320

6

1600

1.2

26

MH-AA1700

AA

14.1

50.0

1.2

25

1700

340

6

1700

1.2

27

MH-AA1800

AA

14.3

50.5

1.2

25

1800

360

6

1800

1.2

27

MH-AA2000

AA

14.3

50.5

1.2

28

2000

400

6

1000

2.4

28

MH-AA2200

AA

14.3

50.5

1.2

28

2200

440

6

1100

2.2

29

MH-AA2300

AA

14.3

50.5

1.2

28

2250

460

6

1150

2.2

29

MH-AA2400

AA

14.3

50.5

1.2

28

2300

240

15

480

6

30

MH-2/ 3A 1100L

2/ 3A

17.0

28.5

1.2

20

1100

220

6

1100

1.2

17

MH-2/ 3A 1200L

2/ 3A

17.0

28.5

1.2

20

1200

240

6

1200

1.2

18

MH-4/ 5A 1800L

4/ 5A

17.0

43.0

1.2

25

1800

360

6

1800

1.2

27

MH-4/ 5A 2000L

4/ 5A

17.0

43.0

1.2

25

2000

400

6

1000

2.4

29

MH-A 2300L

A

17.0

49.5

1.2

20

2300

460

6

1150

2.4

35

MH-A 2500L

A

17.0

49.5

1.2

20

2500

500

6

1250

2.4

38

MH-2/3Sc 1800L

2/3Sc

22.5

26

1.2

12

1800

360

6

1800

1.2

30

MH-Sc1300P

Sc

22.5

42.5

1.2

13

1300

260

6

1300

1.2

45

MH-Sc1500P

Sc

22.5

42.5

1.2

12

1500

300

6

1500

1.2

46

MH-Sc1800P

Sc

22.5

42.5

1.2

10

1800

360

6

1800

1.2

50

MH-Sc2000P

Sc

22.5

42.5

1.2

8

2000

400

6

2000

1.2

55

MH-Sc2500P

Sc

22.5

42.5

1.2

7

2500

500

6

2500

1.2

58

MH-Sc2800P

Sc

22.5

42.5

1.2

7

2800

360

6

1400

2.4

60

MH-Sc3000P

Sc

22.5

42.5

1.2

6

3000

600

6

1500

2.4

62

MH-Sc3300P

Sc

22.5

43.5

1.2

6

3300

660

6

1650

2.4

65

MH-C4000

C

25.2

48.5

1.2

10

4000

800

6

1200

4

83

MH-C4500

C

25.2

48.5

1.2

8

4500

900

6

1350

4

85

MH-D7000

D

32.5

60.0

1.2

9

7000

1400

6

2100

4

150

MH-D9000

D

32.5

60.0

1.2

9

9000

900

15

1800

6

165

MH-D9500

D

32.5

60.0

1.2

8

9500

950

15

1900

6

175

MH-F10000

F

32.5

90.0

1.2

7

10000

1000

15

2000

6

205

MH-F13000

F

32.5

90.0

1.2

7

13000

1300

15

2600

6

225

MH-18670

18670

18.0

67.0

1.2

9

4500

450

15

900

6

65

MH-9V200

9V

26.5 × 17.5 × 48.7

9.0

800

200

400

6

100

2.4

44

Notes:
L: general batteries with low cap
P: High power batteries
Others: batteries with low cap or high cap are available.