From the User Manual.
"To connect to your Quantum, hook up the battery and wait about 10 seconds for it to initialize.
You’ll hear some beeping as it goes through its self-test, and at the end of the long 3-second beep
it should be discoverable over WiFi. "
From the Assemby Manual
"Connect your battery to the pigtail. You should hear three quick beeps, then a long one. If you
do not hear any beeps, immediately disconnect the battery and go to the troubleshooting
section. "
So it seems that as long as you get to the long 3-second beep everything os OK.
"To connect to your Quantum, hook up the battery and wait about 10 seconds for it to initialize.
You’ll hear some beeping as it goes through its self-test, and at the end of the long 3-second beep
it should be discoverable over WiFi. "
From the Assemby Manual
"Connect your battery to the pigtail. You should hear three quick beeps, then a long one. If you
do not hear any beeps, immediately disconnect the battery and go to the troubleshooting
section. "
So it seems that as long as you get to the long 3-second beep everything os OK.