Lawn & Garden Lithium Ion Battery Comparison Chart

A look at key specs of today's growing number of lithium ion batteries for lawn and garden equipment.

Battery Comparison Chart Green Industry Pros 58b9b7d15a3ff

When it comes to lithium ion batteries, voltage seems to be the sexy spec. But voltage is only one part of a more critical equation. The watt-hours spec determines actual power output over a given amount of time.

Watt-hours, or Wh, is calculated by taking the voltage times the ampere-hours, or Ah.

But we're still not done. Maximum voltage and nominal voltage are two separate things. For instance, a 40V max battery actually provides 36V of usage, because the second a tool begins drawing power from it, the battery loses about 10% of its voltage. So look for Nominal voltage.

Finally, the more voltage, the more weight. So evaluate a battery's Wh relative to the weight of the battery. In other words, think about the tools you’ll be using and in what applications. Just like a gas-powered engine, you want a battery that is right-sized for what you’re needing to do, providing the ideal power:weight ratio.