Extra Batteries??

[Zac_Attack]

Hi have the standard ESC which is a 50 Amp, 3-6 cell.
I run 2 batteries: 11.1V 1800mah 20C
I am a little new to the Li-polymer batteries.

I understand that each cell has 3.7V. Thus I have a three cell battery.

If I stay with 3 cells (11.1V).
What effect does the 1800mah have?
What does 20C mean? I assume it means there is 20 cells in each cell?

Do I have to stay to 20C? What if I went to 25C? What effect?

What if I went to 3300mah or lower? What effect?

How do I get to the 50A rating?

Also I do I know how charged the batteries are? I put it on the charger (Li-Po) and wait hours and hours for the light to turn off.

Thanks

[concept1]

my quick electric course!

Lipo's are vary dangerous, i would highly recomend reading up on Lipo's if you do not understand how dangerous they are.

as for what the #s mean. in the very simplest terms (NON technical)

1800mah in real simple terms how long will it go before it runs out of juice. if a 1800mah pack will run your heli for 3 minutes a 3600mah will run it about 6,

the C rateing is basically how much power it can put out, a 20c pack is better then a 15c, but not as good as a 25c. i am sure someone will give the read deffinition but in the simplest terms this will get you going. I was utterly confused when I first got into lipo's a few years ago so I will keep it simple! combine the C rating with the Mah and you get the amps.

your esc can handle up to 50 amps, and depending on what motor you have, blades and batteries will depend on the amps drawn.

if you are only hovering the motor will not draw much current (amps) if you add full pitch the motor will have to work harder and draw more amps etc....

[ke6d]

my quick electric course!

Lipo's are vary dangerous, i would highly recomend reading up on Lipo's if you do not understand how dangerous they are.

as for what the #s mean. in the very simplest terms (NON technical)

1800mah in real simple terms how long will it go before it runs out of juice. if a 1800mah pack will run your heli for 3 minutes a 3600mah will run it about 6,

the C rateing is basically how much power it can put out, a 20c pack is better then a 15c, but not as good as a 25c. i am sure someone will give the read deffinition but in the simplest terms this will get you going. I was utterly confused when I first got into lipo's a few years ago so I will keep it simple! combine the C rating with the Mah and you get the amps.

your esc can handle up to 50 amps, and depending on what motor you have, blades and batteries will depend on the amps drawn.

if you are only hovering the motor will not draw much current (amps) if you add full pitch the motor will have to work harder and draw more amps etc....

1C is defined as the capacity of your pack, i.e, if you have an 1800ma pack, 1C is 1800ma. 20C rating is the discharge capability of your pack. Normally, the battery is rated at the continuous discharge rate and a peak discharge rate.If a pack is rated at 20C continuous discharge rate, the pack can discharge 20 x 1800ma = 36A.

Hope this helps,

Dan, KE6D