Rechargeable Battery Fundamentals, what to look for and how do they work?Rechargeable batteries are the smartest way to power your digital camera, both in terms of battery life and cost. There are two types available: Nickel Cadmium (NiCd) and Nickel Metal Hydride (NiMH). Before you purchase ANY type of rechargeable battery you MUST READ below to AVOID DISASTER.Don't be tempted to go for the cheaper NiCd batteries. Not only are they extremely bad for the environment but they suffer from a well-known problem called the 'memory effect'. The 'memory effect' is the term given to the tendency of NiCd batteries to deliver much reduced power output if they are incorrectly charged and discharged over time. If a NiCd cell is charged while it still has capacity left in it, the battery will 'forget' that it had that capacity and will not be able to use it. All NiCd batteries should be fully discharged before they are charged again to avoid the 'memory effect'.
Orignal From: Rechargeable Battery Fundamentals - Capacity/Charging
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