Syma Forum

Thanks again for the reply.

They both flew after 45 minutes on wall charger. It took 2/3 throttle initially to go to my lofted ceiling (about 15'). I did time them, one lasted a little over 2 minutes then faded, the other around 3 minutes. After that both will continue to fly about 18" off the ground for a while. I never ran them until they failed.

I believe I have genuine Symas, the box checks out, the motors are black and white, the circuit board light is green and the board reads "S107R5". The only thing that is different is the TX, no spring on the left stick. I read that some of the later TXs came that way from  Syma.

My wall charger red light came on when plugged in and stayed on. I used a timer set to 45 minutes. My biggest question is do these batteries always get warm? I've pulled the cowling off both helis and feel no warmth in the batteries, even when the lights say they are fully charged. Maybe I should wait until they get warm.

Hi Jim. I'm new to RCs myself. I am by no means an expert, but if it were me, I would not concern myself so much with the lights as the amount of time it's been charging. If it's been plugged in for 90 minutes (or at least 2 hours) and the light on the charge cable is still just blinking, it should have a full charge by then. If at the end of 90 minutes, you're still only getting 3 minutes of flight time out of BOTH helicopters, I'd say there's something wrong with the charger, or maybe even the USB port. How old is your computer? Anyway, the point being, it's highly unlikely that both helicopters would have a faulty battery, therefore the problem must be elsewhere. I wouldn't think the air density up there would have that much of an affect on your flying time. Granted you are using a bit more power to stay aloft, but nowhere near twice as much. I'm getting around 6-7 minutes out of my 107, consistently. When the battery runs dry, it seems to happen suddenly. One minute she flies just fine, then all the sudden she starts losing altitude, goes to the floor and won't lift off again. It's that way with my S107 and my larger 4 channel F162 Fire Wolf. I've never had them be able to fly just inches off the ground for a while as the battery runs dry. Once they quit flying, they can't fly low to the ground. They're completely grounded.

The instruction manual for my Syma S107G states the following (referring to USB port charging): "Put the charging wire into the computer USB interface, the charging wire will be light (chinenglish for "lit"). Put the other side of the USB charging wire into the helicopter's interface.USB charging wire light will be turn(ed) off. The charging time is about 40-50 minutes. Charging wire light will turn on. Then the helicopter is fully charged."

That's it, ver betum. It says nothing about the charging wire blinking.

As for the 4.2 charger that they included, does it charge the helicopters if you leave it plugged in for an hour or so? How long are you waiting for the light to go out (or start blinking)? I've learned you can't always rely on those instructions. The instruction manual that came with my F162 said to plug in the charger and a green light will come on, then plug into the battery, when charging the light is red, when charging is complete the light is green. What actually happens is, when I plug in the charger the light is red, when I plug the battery into the charger, the light goes off, when charging is complete, the red light comes on again. I'm like "what  $&@%ing green light"? I was like "either it'll charge or it won't", so I patiently waited, and when the red light came back on an hour later I was good to go.