Advice for a new flyer to an Inspire 1 v2

Me thinks I was a little close to a Inspire fail today guys.

took off to give the drone a small test flight to see how it handles compared to my mini 2 and P3P. Got the best set of errors in 30 seconds anyone could want.

Take off - fine got to 42M off ground
Forward movement - Seemed ok but then got " Warning: Motor Overloaded. Aircraft will decelerate to ensure safety" - ok reduce throttle and give it a second to disappear off the screen.
next message: “Critically Low Power. Aircraft Landing. Throttle up to reduce the speed of descent and use sticks to avoid obstacles”. 2 words here (Oh S*it) try to keep it up and free from trees. and then disconnected for 10 seconds.

all is good with the drone apart from a heavy landing. not sure if the battery is at fault here outdoor temp was 8C and drone reported back battery was at 22.9C.