dgriffith, 1 year ago

Battery chemistry produces fixed voltages depending on what you use. It depends on where the active components sit on the electronegativity table.

The typical ones are:

Zinc-carbon and alkaline - 1.5 volts per cell.

Lead acid - 2 volts

Nickel Cadmium - 1.2 volts

Nickel Metal Hydride - 1.4 ish.

All the Lithium ion combos - 3.4 to 3.7 volts.