I am looking to buy Lipo 350mAh 20C single cell to use with a micro motor and propeller. I think the motor uses around 3-3.5V so I could use the setup to create a free flight. I can manage to create a plane using styrofoam but i read that lipo battery voltage cannot go below 3 volts and we cannot charge it normally.
I have a solar panel 12V 10W dc and a converter to 6V dc which i could use, few doubts that i have if anyone can help me.
1) I am not sure how long the battery needs charging.
2) Will the lipo be sufficient to make it work.
3) Do i need a proper charger or alarm to go with the battery for voltage regulation.
4) Dont know difference between S & C terminology in Lipo

Also any recommendation or links to use a battery, charger.

I am pretty new to this stuff. I will appreciate if anyone can give some info on the points above