Target.com has the Greenworks G-Max Cordless 40 Volt 20" Cutting Deck Twin Force Dual Blade Lawn Mower for $279.99 + Tax + Free Shipping. If you have a Target Red Card you get an extra 5% off.
Picture shows two batteries & a charger, description mentions that Rechargeable Batteries are included, and the shipping weight (42.5 pounds) lines up with the model they have on Amazon.com that includes the batteries & charger. The only models I could find with the Twin Force all have two batteries & a charger.
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