VEVOR Cordless Chainsaw, 20V 12-Inch Brushless Chainsaw Battery Powered, 4.0Ah Battery and Rapid Charger Included, Handheld Electric Chain Saw for Tree Felling, Wood Cutting, Pruning, and Trimming

Yes, all our products come with a 12-months warranty.

This product cannot be used with Vevor chainsaws.

No,this cordless 20 volt saw can't take a DeWalt 20 volt battery pack.

This product already includes a chain.

4.0Ah Lithium-Ion Battery for Extended Runtime The 4.0Ah lithium-ion battery can provide up to about 90 cuts on a full charge (depending on wood type and use). You can work for longer without having to stop and charge it often. It can be used to do full sessions of cutting or trimming at once. A full charge for the included 20V battery typically takes between 60 and 90 minutes using the standard charger provided in the kit.