So 3days ago bought syma s107 Helicopter..Looked great and everting ok.I put a batteries in tx , and turned on a helicopter (without charge-know bad idea) it lift up with a full thortle only so flew it just for 30 seconds or 1min..Then charged the heli , but it still can lift off with full thortle , if no i will fly few cm from ground..With full thortle it can not lose altitude for 1-2 mins.Now i think the bettery is dead bicouse of my stupid idea fly without charge.
But now i noticed a problem , sometimes the upper blade start to spin after 1/2 thortle , sometimes LOWER at 1/2 thortle , i think this problem can by too a battery problem, what u think?
Im going to buy a 3x3.7 v 240mah lipo`s for a 5$ , this should make my s107 fly like a new?

You need to check the Syma threads in the coax forum. There's very little interest in any 3 channel toys here.

I'll be honest with you mate, I had 2 in a week and they both died in a similar fashion... Got the S032 and it was much better, reliable and a bit more stable.
If your buying the Syma's with a view to upgrading to a 4 channel and save your money and just go for it straight away as the 3 channel doesnt really prepare you forbids ramp up in difficulty in my opinion?!
Bought a 120 sr and it's a beast but way more gratifying when you hover for even a few seconds as you've put the work in and not just relied on the (admittedly impressive) design and engineering...

Absolutely. The 3 channel helis are simply toys to enjoy. They teach you nothing.