Does this milwaukee 2471-20-m12 come with a battery

No, this model does not include batteries. Milwaukee tools with product numbers ending in "20" do not include batteries or charger.There is a kit version, which does include a battery and charger, link below.http://www.toolnut.com/milwaukee-2471-21-m12-cordless-lithium-ion-copper-tubing-cutter-kit.html