rossi86m:
Hello!!I am building a bicopter and right now i am using a lipo battery 11.1v and 2200mha. It seems to be too heavy and i was wonderi g if i can use a smaller one like a 1500mha or 1200mha???
I am using two brushless motors (hobbymate 2204) with two 18a ESCs
What do you think?
I think for a proper answer you really need to know how much current the motors are actually using. Do you have a wattmeter to measure the current?
If not then perhaps we can assume it's less than 36A (2 x 18A). There are smaller batteries that can handle that much current. If you look for a 3S 1.1V 1500mAh with a C-rating of 30 or more that should be o.k. Even a 3S 1000mAh with C-rating 40 or more will probably work. The C-rating is important.
Of course there's a trade off...the smaller the battery capacity the shorter the flight time you'll have.
Steve