150Ah to kWh Conversion for Battery

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150Ah to kWh Conversion

150Ah is a common capacity for lithium batteries and lead-acid batteries. However, in many cases, the battery capacity marked in Ah cannot correctly reflect the battery capacity. Therefore, it is necessary to introduce 150Ah to kWh coverage to compare the battery capacity measured in kWh. This article attempts to explain 200Ah to kWh conversion from an easy-to-understand perspective. At the same time, the capacities of 12V150Ah lead acid battery and 48V150Ah lithium battery will be compared to help readers gain a deeper understanding.

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Compare Battery and Read Related Paramter

150Ah Lead Acid Battery

The above picture shows a typical 150Ah lead acid battery. First, we need to read its most important parameters: battery voltage and capacity in Ah. From the datasheet, we can find that battery voltage = 12V, battery capacity in Ah = 150Ah.

150Ah Lithium Battery

The picture above is a typical 150Ah lithium battery. Similarly, we need to read the battery voltage and capacity in Ah from the datasheet. From the datasheet, we can find that battery voltage = 48V, battery capacity in Ah = 150Ah.

150Ah to kWh Conversion

We convert 150Ah 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

150Ah Lead Acid Battery
150Ah Lithium Battery

According to the above picture, we read the battery voltage or the nominal voltage, as 12V. And its battery ampere-hours is 150Ah. Then, substituting it into the above formula, we can get the following calculation:

Battery Capacity(In Wh) = Battery Voltage * Battery Amp-hours

                                           = 12V*150Ah 

                                           = 1800Wh

Battery Capacity(In kWh)= Battery Capacity(In Wh) /1000

                                           = 1800Wh/1000

                                           =1.8kWh

According to the above picture, we read the battery voltage or the nominal voltage, as 48V. And its battery amp-hours is 150Ah. Then, substituting it into the above formula, we can get the following calculation:

Battery Capacity(In Wh) = Battery Voltage * Battery Amp-hours

                                           = 48V*150Ah 

                                           = 7200Wh

Battery Capacity(In kWh)= Battery Capacity(In Wh) /1000

                                           = 7200Wh/1000

                                           =7.2kWh

We have completed the 150Ah to kWh conversion for the two batteries using the above formula. We can see that the capacity of this 48V150Ah lithium battery is 400% of the 12V150Ah lead acid battery. So as we mentioned above, the capacity of a battery is ultimately determined by how many kWh it has. When the voltages of two batteries are different, the battery capacities measured in Ah cannot be directly compared.

So please note that the unit of Ah cannot fully represent the capacity of the battery, and the battery voltage factor needs to be considered. So when we are asked to convert 50AH to kWh, we need to add the battery factor to the calculation. And flexibly apply this formula:

Battery Capacity(In Wh) = Battery Voltage * Battery Amp-hours

Battery Capacity(In kWh)= Battery Capacity(In Wh) /1000

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