I purchased two batteries to test in my 120. They perform as well as the E-flite batteries at 1/4 the cost. I normally charge at 0.5A and have no problems. After about 4 to 6 mo. the E-flite have lost their capacity. I am interested in how long the G-Force will last. At $2.50 ea I will be buying more. (Posted on 11/12/2012)