Modified on Wed, 3 Apr at 8:42 AM

How big of a heat load does the battery contribute with?

Answer:

A battery always contributes a certain heat load, which is essentially the sum of total losses in the battery's wiring, conversions, and battery cells. Depending on the manufacturer and battery chemistry, this figure may vary and be anywhere between 3-7%. The heat load is always expressed as a percentage of the maximum output power that a battery has, that is, the maximum charging and discharging power. Data on efficiency and maximum power are always specified in the datasheet for a battery.


Example:

A battery has 97% efficiency and a maximum output power of 10 kW. Then the battery's maximum heat load will be 300 W (which must be removed by ventilation).


Here are some examples of batteries supported in Ferroamp's system with approximate efficiency figures:

  • Ferroamp PSM - Approximately 95% efficiency, 5% of charging or discharging power in heat losses
  • Pylontech H1 & M1 - Approximately 95% efficiency, 5% heat losse
  • ESS batteries - Approximately 96% efficiency, 4% heat losses

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