Do you need a bigger battery if have wattage motor even they are the same volts?

In general, a higher wattage motor will require a higher capacity battery. This is because the higher the wattage, the more current the motor will draw, and the more current that is drawn, the faster the battery will drain.

For example, let's say you have two electric motors, one that is 100 watts and one that is 200 watts. Both motors are running on the same voltage battery. The 200-watt motor will draw twice as much current as the 100-watt motor, so it will drain the battery twice as fast.

Therefore, if you are planning on using a higher wattage motor, it is important to make sure that you have a battery that is large enough to support it. Otherwise, you may find yourself running out of power quickly.

Here is a table that shows the relationship between motor wattage, battery capacity, and runtime:

| Motor Wattage | Battery Capacity | Runtime |

|---|---|---|

| 100W | 1000mAh | 10 hours |

| 200W | 2000mAh | 5 hours |

| 300W | 3000mAh | 3.3 hours |

| 400W | 4000mAh | 2.5 hours |

| 500W | 5000mAh | 2 hours |

As you can see, the higher the motor wattage, the lower the runtime. This is why it is important to choose a battery that is large enough for your intended application.