250Ah to kWh Conversion for Battery
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250Ah to kWh Conversion for Battery
250Ah is a very common battery capacity which you can found in lead acid battery, lithium battery and so on. But in many scenarios we need to convert Ah units into kWh. This article will introduce you to 250Ah to kWh Conversion for Battery.
Ah or Amp-hours often appears in battery
The above picture shows a 12V250Ah lead acid battery. To complete the 250Ah to kWh Conversion for Battery, we first need to find the battery voltage and battery capacity (in Ah) on the battery datasheet. Then according to the datasheet above, we can know that battery voltage = 12V, battery capacity (in Ah) = 250Ah.
Please note that the battery voltage is very important for the calculation of battery capacity in kWh.
250Ah to kWh Conversion
We convert 250Ah to kWh using the following formula:
Battery Capacity(In Wh) = Battery Voltage * Battery Amp-hours
Battery Capacity(In kWh)= Battery Capacity(In Wh) /1000
Please note that 1000Wh = 1kWh
Based on this formula, we can start to calculate how many kWh of electricity this 250Ah battery is equivalent to.
According to the above picture, we read the battery voltage or the nominal voltage, as 12V. And its battery amp-hours is 250Ah. Then, substituting it into the above formula, we can get the following calculation:
Battery Capacity(In Wh) = Battery Voltage * Battery Amp-hours
= 12V*250Ah
= 3000Wh
Please note that we have only completed the Wh calculation here and need to convert Wh to kWh.
Battery Capacity(In kWh)= Battery Capacity(In Wh) /1000
= 3000Wh/1000
=3kWh
Summary
Please note that when comparing the capacity of two batteries, the Ah unit is assumed to be directly comparable if they have the same voltage. However, when the voltages of the two batteries are different, such as comparing a 48V250Ah lithium battery to a 12V20Ah AGM battery, their capacities are different.
48V250Ah lithium battery battery capacity in kWh = (48V*250Ah)/1000 = 12kWh
12V20Ah AGM battery capacity in kWh = (12V*250Ah)/1000 = 3kWh
Therefore, how much electricity a battery can store is fundamentally determined by its kWh capacity. In many cases, it cannot be judged by just Ah. This is the fundamental meaning of 250Ah to kWh Conversion.
