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Battery life calculator

This calculator will help you to determine
  1. How long battery can power a given load that is Battery life or Battery run time
  2. Rate of discharge of the battery in terms of "C"
  3. Recommended discharge rate based on the type of battery for optimum battery performance





Formulas:

Maximum duration a battery can power a load

Battery life =Battery capacity ( mAh or Ah ) / Load current ( mA or A )

Rate at which load draws current from the battery

Rate of discharge C = Load current ( mA or A ) / Battery capacity ( mAh or Ah )

Recommended rate of discharge for common battery types

Battery types Recommended discharge rate
NiCd 1C
NiMh 0.5C
Li-ion 1C
Li-ion polymer 1C
Lead Acid 0.2C

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