Battery life varies depending on product configuration and model, applications loaded on the product, power management settings of the product, and the product features used. The maximum capacity of a battery decreases with time and use. The life of a lithium based rechargeable battery operating under normal conditions is generally up to 500 charge-discharge cycles with the maximum capacity decreasing with each charge-discharge cycle. NICD or NIMH batteries can last up to 800 charge-discharge cycles
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Every battery experiences battery degradation and power loss at different times and this is simply normal use of the battery. Depending on product configuration and model, applications loaded on the product, power management settings of the product, and the product features used your battery may last anywhere from 8 months to 36 months. Battery degradation and power loss does vary with each battery and when it occurs it simply means that your battery has reached a point where it can no longer accept a charge and recharge the chemical inside your battery. But a good rule of thumb is that a lithium based rechargeable battery operating under normal conditions can power your device between 300 to 500 charge-discharge cycles with the maximum capacity decreasing with each charge-discharge cycle. NICD or NIMH batteries can last up to 800 charge-discharge cycles.