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  • Yakub Ansari

Difference between 12V and 24V battery

Updated: May 23

The voltage mentioned on the battery represents the maximum voltage across battery terminals. Hence for 12 V batteries, the maximum voltage across the battery terminal is 12 V and for the 24 V batteries, the maximum voltage across the battery terminal is 24V.


Also ‘Ah’ (Ampere/hour) capacity marked on the battery is the current a battery can provide over a specified period of time to a specific End of discharge Voltage at a specific temperature. Whereas the End of discharge Voltage is the level to which the cell voltage is allowed to fall to before affecting the load.

As the battery starts discharging, the voltage across its terminals starts reducing too but the rate of voltage drop throughout the discharging period is not too much high.


The voltage battery provides before it fails is called End of discharge Voltage.

Difference between 12V and 24V battery


The main difference between a 12V battery and a 24V battery is the amount of power stored in it. A 24V battery of the same ‘Ah’ rating as a 12V stores twice the power. Because the energy stored in the battery is given by multiplying battery voltage with Battery Ampere hour.


To explain the same, let's compare 12V, 200Ah and 24V, 200Ah batteries.



Difference between 12V, 200Ah and 24V, 200Ah battery


The amount of power stored in a 24V, 200Ah battery will be 24V x 200 Ah = 4800 Watt-hour (4.8kWh). And the amount of power stored in a 12V, 200Ah battery will be 12V x 200Ah = 2400Watt-hour (2.4kWh).