What is the difference between a 20 volt battery and a 40 volt battery?
Accordingly, can I use a 40 volt battery in a 20 volt tool?
No, not without intervening circuitry to step down the voltage to 20 volts. You can generally use a higher capacity battery (that is one with more amp hours and thus run time) but the battery itself has to be 20 volts. Higher voltages will destroy the tool.
Similarly, what does the volts on a battery mean? The term “voltage” in a battery refers to the difference in electric potential between the positive and negative terminals of a battery. A greater difference in potential results in a greater voltage. Electric potential means the difference in charge between two points--in this case, the two terminals of a battery.
Considering this, is 20v or 40v better?
The higher the voltage, typically, the more cells that are in the battery pack. So when comparing a 40V pack to a 20V pack, in most cases the 40V pack will have more cells which means more power capacity available.
How long does a 40v battery last?
two to three years