Concur. Be wary. Use batteries specifically rated for specific kit... It might fit in the battery bay... it might boot your drone up... but it might cut out mid-flight as well.
You don't have to be in 'sport' mode for the motors to have to draw...
Just be aware that the possibility exists that the voltage differences can cause unpredictable and unexpected problems. Kind of like driving drunk. Most arrested drunk drivers on average have "successfully" driven drunk 500 times before being...
Got to hand it to them for great marketing, though!
Devil is always in the details.
Electric cars are fastest off the line, but quickly fall behind after that.
Handling isn't the best either.
I still prefer my gas guzzling sports car to an...