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Nickel Cadmium & Nickel Metal Hydride

Rechargeable Nickel Cadmium and Nickel Metal Hydride batteries can offer economic and environmental benefits compared to disposable batteries.

Some rechargeable battery types are available in the same sizes as disposable types. While the rechargeable cells have a higher initial cost, rechargeable batteries can be recharged many times and have higher capacities.

Ni-Cd and Ni-MH battery packs are grouped according to their capacity and internal resistance. They are assembled serially with a nickel connection tag by a special welding machine.

These batteries are used in; all kinds of telecommunications equipment, handhelds, radios, televisions, portable and cordless phones, medical devices, computers, calculators, cash registers, alarms, signaling systems, emergency lighters, flash, shaving machines, portable household appliances, optical devices, topographic equipments, power sources, test and monitor devices, automation systems etc for a long period of time.

Ni-Cd and Ni-Mh batteries and battery packs should be charged with a constant current charger. They should be charged with a manufacturer’s recommendation. Otherwise, the lifetime of the battery reduces. Before the first use, they should be fully charged.

The capacity of the Ni-Cd and Ni-MH batterries vary by different types. The discharge current varies according to the ambient temperature and discharge end voltage levels.


Lithium Ion

Lithium-ion  batteries are manufactured as cylindirical and prismatic types.  In manufacturing, prismatic types are prefered mostly.  The nominal voltage of a Li-ion battery is 3,6V which is 3 times of other type of Nickel batteriesSo, 1 Li-ion battery can be used instead of 3 nickel cells in terms of voltage compliance. But other device parameters such as the charging system and the device current needs should be considered.  A key advantage of using Lithium ion chemistry is the high  open –circuit voltage that can be obtained in comparison to the other rechargable battery types.

Prismatic cells are commonly used in portable communication devices. The most popular one is 8.6x34x48mms cell which became a standard use for the communication solutions. 


Cautions for Ni-Cd & Ni-MH & Li-ion Battery Usage:

1.) Battery should not be thrown in fire and should not be dismantled.

2.) Keep away from the reach of children.

3.) Do not short circuit. It may causes serious burns.

4.) (+) and (-) poles should be placed to the device in the correct format.

5.) Unrechargable batteries should not be subjected to the charging process.

6.) All the batteries in the device should be replaced at the same time. Used batteries and new batteries should not be used together. Always use the same brand in the devices.

7.) To extinguish fires occured by the batteries; only sand, CO2 fire extinguisher or water should be used.

8.) Batteries should not be thrown into trash, lake, earth or river.


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