Has anyone had experience with the $99 batteries from Amazon? My first two, not from amazon ($129), lasted about 97 flights until they exhibited Auto Land at about 80%. The first $99 battery is at 90% life after only 30 flights. Bought a second discount battery but have not flown it much. Has anyone experienced this with the $99 batteries? I am very conservative and use all of the recommended battery life extending tips. Never fly less than 40%, shelf storage at 50%, cycle to 8% every 20 flights. Although, there have been times when the batteries were left in the hot car for a while.