hello there im new to this website
i have built 50 inch wings span twin cargo plane with use of racerstar 2700kv and 30a esc
and vie use 5 inch of props is props are good ??
but anyway my question is there is too many cheap 18650 cell out there and i want to know from winch cell i can make big mah and high amp rate batter for longer flight time
THnQ
I’m replying assuming that you are new to this hobby. If not, please ignore my comments/suggestions
There are two issues involved. Suitability of battery, and suitability of model.
1. Battery
I see that robu.in has a 2200mah 3.7v for Rs 199. You’ll have to put 3 in series.
This means a battery box or soldering. Both unreliable for RC airplane use.
More importantly, C rating is not mentioned. If you draw 2amps, it may last for an hour.
But can it give 10, 20 or more amps? One doesn’t know.
Incidentally in the last 4-5 years I don’t recall any member using Li Ion to power an RC airplane.
The most commonly used are 3s Lipos of 2200mah and 20-30C rating, about 180-200gms.
Or 3s 1000mah Lipo of 20-30 C rating, about 80-90 gms.
So please consider using what is known to work, to reduce imponderables/ increase reliability.
2. In case you are new to RC flying, a twin engined cargo plane is hardly the best choice to learn on.
Welcome to this forum.
Please post pics of your model. That will get you more responses.
Regards