I just downloaded the new firmware. Halfway through the upgrade it stopped and I got a battery error. Popped in a new battery and completed the upgrade but the old battery won't take a charge and the middle two lights blink periodically. I tried the battery a 2nd time and I'm still getting a batter error and under aircraft battery in the status bar it says "Invalid battery". Anyone else have this issue? Is my battery shot now?

Nope, common problem.  See this.

Tombolian Posted at 2017-7-3 10:33
Nope, common problem.  See this.

All fixed!! Thanks

Didn't read is was allready fixed...

Hi guys, I am planning to buy mavic pro. Can someone please tell me the lithium content in the battery. Just want to know if I can carry in the hand baggage. Thanks Abhishek