There are many, but most families do not have the required conditions.
Wind energy production, human energy production (foot energy), animal energy production... Others are not suitable for households, such as tidal energy production, waste energy production, solar thermal energy production, biomass energy production, etc.
Of course, if you don't care about water bills, there is a more feasible way to generate electricity: tap water hydropower, but the water bill water will be higher than the electricity bill.
The current to charge the battery is generally 5 to 6 amps. If you charge one 12 volt battery at a time, the motor power should be at least around 100 watts (the power reserve should be around 100 watts). considered), and it must be 12 Volts.
You can calculate it like this:
Flow rateof water (kg/s) multiplied by the acceleration of gravity (9.8 Newtons/kg) multiplied by the impact height of the water = power
Flow = the cross section of the pipeline multiplied by the flow rate and divided by the specific gravity of the water.
Generators of the same model are connected in parallel, as long as the combined power is sufficient.
Time Battery charging rate depends on battery capacity and charging current.