I purchased these batteries for my modified Blade Inductrix. All I can say is WOW! These cells are EXCELLENT! I got almost 8 minutes of flight time on a stock F.C. Inductrix, with fast 17,000 KV motors, no FPV camera. This was on the first charge out of the package, and I expect them to get better after a few cycles. These are 2 grams lighter than all of my other 255mah cells also. The contacts in the connector are nice and tight. I don't know how Ovonic does it, but NICE JOB. This is the second set of Ovonic cells I have purchased, and they are just as impressive as the first. Keep up the good work!