NiMh

ELECTRONIC COMPONENTS

Electromechanics

GE_Batteries

Batteries

Nickel-Metall Hydrid

Nickel-Cadmium (NiCd) and Nickel-Metal Hydrid (NiMH) are similar types of technology which can replace each other in various applications.

Advantages

Disadvantages

+ higher energy density than NiCd (30% and more)

- 50% more self discharge than NiCd

+ environmentally friendly, no constriction for particular countries

- temperature sensitive

- avoid overcharging and beware the cell warming while charging

Useful things to know about NiMH…

best stored at a 40% loaded state (formatting after a long storage can be helpful to get the whole capacity back)

does not get effected by the memory effect that much because it is repairable up to a certain degree (depend on the charger technology), quarterly care helps to avoid lost of energy potential

Capacity

Voltage

Cylindrical cells

550 mAh to 16,000 mAh

1.2 V

AAAA

550 mAh to 650 mAh

AAA

280 mAh to 1,000 mAh

600 mAh to 2,700 mAh

900 mAh to 4,100 mAh

1,500 mAh to 5,500 mAh

1,800 mAh to 8,500 mAh

to 15,000 mAh

Prismatic cells

650 mAh to 1,350 mAh

1.2 V, 9 V block

Button cells

60 mAh to 600 mAh

1.2 V

Applications:

- Funktelefone
- cellular phone
- medical equipment
- safety system
- POS system
- barcode reader

Features:

- twice the energy density of NiCd batteries
- very small dimensions
- immerse in solder bath
- maintenance free