Popular rechargeable batteries are the nickel cadmium (NiCad) or Ni-Cd and the Nickel Metal Hydride (NiMH). Ni-Cd is older technology and is still good for beginners, many low use commercial applications and general and small items use. The main advantage of nicad batteries is that these batteries are inexpensive however there is a disadvantage as these batteries can develop memory. That is to say the batteries can remember their last charge. If this does it occur it means that if you use only 90% of the battery and you recharge it the battery will only recharge to 90% capacity. Many industrial and commercial nicd batteries are in effect not rechargeable and hence do not incur these problems. The ni-cd batteries come in single, twin and ...
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nicd batteries
