[DCS391 skill saw dies super fast]

Thanks guys I'll pick one up tomorrow

[DCS391 skill saw dies super fast]

I have a cordless 20v max skill saw. 

Less than a year old and haven't used it much. 

20v lithium batteries work totally fine on my drill. 

My problem is whenever I use one of my 20v batteries freshly and fully charge with my saw, it dies in less than 2 mins. 

 

I can't cut 5 ft of 3/4" soft pine board and it dies. I'm using a blade for wood cutting too. 

 

The blade does not freely spin like on my ryobi. Don't know if that matters. 

 

Any thoughts?

I'm thinking I need bigger batteries or a new saw.