Nice pickup! Always good to see more of us with electric throwers!
I did the math on power consumption before...
The Wheelybird uses 9.5 amps at peak draw for 1/4 second, then 2 amps for the rest of the cycle, which is about 2 seconds. Doing the math it comes out to.... a lot of throws.
Rounding up for 9.5 amps for 1/8 of the time... 2.5 amps for 2 seconds.. figuring 75 Amp Hours.... *60 for minutes *60 for seconds, divided by 2 since each cycle is 2 seconds... divided by 2.5 amps for each cycle... = 54000 throws with the 75AH battery I have.