EN-EL1 Li-ion Battery for Nikon Coolpix 775, 880, 885, 995, 4300, 4500, 4800, 5000, 5400, 5700 Digital Cameras, Replacement Nikon (EN-EL1) Digital Camera Batteries

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Battery cycle life is defined as the number of complete charge - discharge cycles a battery can perform before its nominal capacity falls below 80% of its initial rated capacity. Lifetimes of 500 to 1200 cycles are typical. The actual ageing process results in a gradual reduction in capacity over time. When a cell reaches its specified lifetime it does not stop working suddenly. The ageing process continues at the same rate as before so that a cell whose capacity had fallen to 80% after 1000 cycles will probably continue working to perhaps 2000 cycles when its effective capacity will have fallen to 60% of its original capacity. There is therefore no need to fear a sudden death when a cell reaches the end of its specified life.

An alternative measure of cycle life is based on the internal resistance of the cell. In this case the cycle life is defined as the number of cycles the battery can perform before its internal resistance increases to 1.3 times its initial value when new.

In both cases the cycle life depends on the depth of discharge and assumes that the battery is fully charged and discharged each cycle. If the battery is only partially discharged each cycle then the cycle life will be much greater. It is therefore important that the Depth of Discharge should be stated when specifying the cycle life.

When battery systems are specified it is usual to dimension the battery in terms of its end of life capacity rather than its capacity when new.

Battery shelf life is the time an inactive battery can be stored before it becomes unusable, usually considered as having only 80% of its initial capacity as above.

Battery calendar life is the elapsed time before a battery becomes unusable whether it is in active use or inactive as above

1.Connect the adaptor's DC plug with the battery plug.
2.Connect the adaptor with the home electric plug. The battery plug light shows "Green".
3.Install the designated battery into the battery plug.The light shows "Red"
4.The battery plug light turns into "Green" when the battery is in full charge.
5.Take out the battery and take off the adapter form home electric plug and battery plug.

What you should note:

1.Please pay attention to the battery plug's light "COLOR".
2.If the light has not changed to Red.The battery should not being charged.
3.Take off the adaptor at first and take out the battery if the battery should not being charged.
4.Don't leave the battery in the battery plug too long time after the battery is fully charged.
5.Keep out of the reach of children.
6.Don't disassemble or attempt to open the battery charger.
7.Far away from fire and high temperature area.