Hi tree,

Not immediately. When you start to lose battery power, your receiver loses the ability to read the signal from the transmitter and your servo movement will become more erratic with the loss of power.

I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.

Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Also you may want to check our Website at (http://www.futaba-rc.com)