Generally, the higher the voltage of the cordless tool, the greater power and beefier motor it will have.
The power of cordless power tool is dependent on supply voltage and current. Current draw (amps, A), not charge capacity (amp-hours, Ah), which is the spec you often see tied to cordless power tool battery packs.
With lower voltage tools you’ll see less power, lower costs, lower weight, smaller size, and sometimes less runtime. Often, there’s a balance of greater power and runtime. Lower voltage tools will be optimally designed for the matched battery system.
Circular saws are a great example of this. The smaller the supply voltage, the smaller the blade size, although this doesn’t necessarily hold very true anymore, thanks to the power boost made possible by brushless motors.
Comparing the 20V cordless power tool with 40V, let's take the leaf blower for example, the 40V one can push air with a higher max speed than the 20V one. Both can push the same volume of air, which means the 40V leaf blower is doing more work.
Theoretically the higher voltage tools should run cooler and last longer. The power difference between the 2 systems is not as vast as one might expect. However run times are.
In a word, a smaller and lower powered tool you need to choose, or a bigger and higher powered one? The answer should depend on how you intend to use the tools.
Enegitech 58V Cordless Lawn & Garden Tools, with high voltage, offer you great power and help you finish your gardening work with high efficiency. Ergonomic design can effectively reduce fatigue in long time work. It will be on market soon, let’s look forward it!