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FAQs: Battery Management

Posted: 28 Oct 2008 ?? ?Print Version ?Bookmark and Share

Keywords:FAQ? battery management?

How is battery capacity measured?

  1. measured in mAh (milli-Amp hour)

  2. higher the number, the greater the capacity

What is "C" rate?

  1. a measure of the amount of current going into or out of the battery

  2. charge and discharge rates are measured in C

What is end of charge voltage?
Voltage considered "full"

What is end of discharge voltage?
Voltage considered "empty"

What is charge termination method?
Conditions under which the battery's charging is terminated. Different methods for different chemistries.

What is design capacity?
The fixed, nominal amount of full charge capacity at C/5 rate & room temperature

What is remaining capacity?

  1. Present amount of stored in the battery

  2. Equals Available Capacity + Residual Capacity)

What is full charge capacity?

  1. Amount of capacity stored when fully charged

  2. Varies as battery ages

  3. Re-learned following full charge/discharge cycle

What is available capacity?
Nominal amount of capacity supplied by battery at C/5 rate & room temperature

What is residual capacity
Capacity not available; varies with discharge rate and temperature

Source: Microchip Technology Inc.

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