i had good luck and 100.00 of bad luck first i ordered 2 turnigy 4000 40c 2cell and the both work great so i decided to order two 5000 40c 3cell and two 2200 30c 3cell and all 4 of them when out in one month. i did well on the 2 cells but the 3 cells was a ripoff and i will never get lipos from HK again most of the things the sell is junk in my eyes