Thread: Discussion Syma s107 Helicopter
View Single Post
Old Mar 06, 2011, 05:13 PM
djdavies83 is online now
Find More Posts by djdavies83
We can rebuild it!
djdavies83's Avatar
United Kingdom, Wales, Swffryd
Joined Apr 2010
3,693 Posts
Originally Posted by HuhWhat View Post
Incorrect. That pcb board has a computer on it and a battery charge controller. These li-poly batteries require very controlled charging. The charge controller on the helicopter charges the battery until the charge voltage across the battery reaches about 4.8 Volts. It appears that if the no load voltage across the charge terminals increases much above 5 Volts the helicopter can be damaged. To check any charger just plug it into an outlet and measure its' output voltage. If the voltage is much over 5 volts it may damage the heli's circuit board.
I know there is a overcharge board on the LiPo, of course when this cuts off from the charger if the charger is unregulated it would rise above smcharger voltage, I have charged a a S107 cell from the USB charger without it being in the heli, charged as normal with no problems so I really doubt there is in charging circuitry in the helicopter.
djdavies83 is online now Find More Posts by djdavies83
Reply With Quote