The voltage of a police taser can vary depending on the model and manufacturer, but most tasers used by law enforcement agencies in the United States typically deliver an electrical charge of around 50,000 volts.

However, it is important to note that the voltage of a taser is not the most important factor in its effectiveness. The key to a taser’s ability to incapacitate a person is the amount of current that it can deliver.
When a taser is fired, it delivers a high-voltage, low-amperage electrical charge to the target. This electrical charge temporarily disrupts the communication between the brain and the muscles, causing the target to lose control of their movements and become incapacitated.
The amperage of the taser is what determines the strength of the electrical current that is delivered to the target. Most tasers used by law enforcement agencies have an amperage of less than 1 milliampere (mA), which is considered to be a non-lethal level of current.
It is important to note that the voltage and amperage of a taser can vary depending on the specific model and manufacturer, and that there are other factors that can also affect its effectiveness, such as the distance between the taser and the target, the size and clothing of the target, and the angle at which the taser is fired.
It is also worth noting that while a taser is considered to be a less-lethal alternative to firearms, it can still be deadly in certain circumstances. For example, a taser may be more likely to cause serious injury or death if it is fired at a person who is standing on a high surface, such as a roof or a balcony, or if it is fired multiple times in rapid succession.
In conclusion, most tasers used by law enforcement agencies in the United States deliver an electrical charge of around 50,000 volts, but the amperage of the taser is what determines its effectiveness in incapacitating a person. It is important to note that while a taser is considered to be a less-lethal alternative to firearms, it can still be deadly in certain circumstances, and should be used with caution and in accordance with proper training and protocols.