Explain here.

To charge a 12 volt battery, you need to charge it with 14 volts.

Charging a 24 volt battery requires a 28 volt charge.

It is not a 12-volt battery that is charged with a voltage of 12 volts. It can't be charged with a voltage of 12 volts.

A 12-volt battery shoots a 14-volt generator, and a 24-volt battery takes a 28-volt generator.

12V battery = 14V generator 24V battery = 28V generator

The generator has its own voltage regulator, it can be directly connected to the battery.

This permanent magnet brushless pure copper wire generator, without the battery, turn it up, can directly generate electricity, can directly light the bulb!