Electric mowers are a better alternative to gas-powered machines, even if they don't solve all environmental issues since they rely on fossil-fueled plants to generate their power, says Alex Fink of Michigan. The group People Powered Machines estimates an electric mower used weekly consumes only about $3 of electricity a year. The drawback? Batteries can overheat, which shuts the mower down until the power cells cool, Fink says.
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