All batteries must be shipped by a ground shipping method. New Packaging! After BT2.0 300mAh 1S battery, BT2.0 450mAh 1S battery is following close at its heels. As the first 450mAh 1S battery with BT2.0 connector in the current market, it has exclusive designed BT2.0 connector, which has broken through the bottle-neck of PH2.0 crappy crimped pins. What's more, it is highly recommended for Emax Tinyhawk, which achieved dynamic balance, longer flight time and better performance, just need to simply modify its connector to BT2.0 connector. BT2.0 Connector - the most significant revolution in 1S Whoop Drone. We also carry 260mAh, 300mAh and 450mAh 1S BT2.0 packs!  Check out all our 1S batteries and our BetaFPV selection! Not sure if it's worth to switch BT2.0? Check more from Joshua Bardwell'video- Proof that BT2.0 connector is better than PH 2.0 Since February 2019, we've got some feedback on Facebook about how eager they need the high quality of solid pins connector on 1S whoop drone. So we started our long-term investigation on the design of the solid pins and the stable manufacturing technique to meet pilots' demand. BETAFPV always keeps moving forward with passion for breakthrough experiences. After BT2.0 300mAh 1S battery, BT2.0 450mAh 1S battery is following close at its heels. As the first 450mAh 1S battery with BT2.0 connector in the current market, it has exclusive designed BT2.0 connector, which has broken through the bottle-neck of PH2.0 crappy crimped pins. What's more, it is highly recommended for Emax Tinyhawk, which achieved dynamic balance, longer flight time and better performance, just need to simply modify its connector to BT2.0 connector. Features BT2.0 connector decreased internal resistance of connector effectively by upgrading the crimped pins to 1.0mm banana connector and increasing the cross-sectional area of 1.0mm banana connector. By solving the problem of voltage sag, the discharge of the 450mAh 1S BT2.0 lipo becomes more efficient. Pilots can enjoy more flight time without disturbance of low voltage warning.  BT2.0 450mAh 1S 30C Battery has stable current/voltage output and high efficiency. All 1S brushless drones will gain powerful and perfect performance with this BT2.0 450mAh 1S battery. It is perfectly suitable for Emax Tinyhawk, it can provide stable and consistent power, which achieved dynamic balance and longer flight time. Just need to simply modify the PH2.0 connector to BT2.0 connector. Compared with the PH2.0 crimped pins, BT2.0 connector is more durable which can discharge more currents in the same capacity and provide far more power.  High-end technology to guarantee high quality and consistent performance. We released BT2.0-PH2.0 adapter cable, which is convenient to charge BT2.0 battery with stock PH2.0 charger. Meanwhile, we also release BT2.0 all-in-one battery Tester & charger for your need. Specifications Capacity: 450mAh Rate: 30C/60C Voltage: 4.35V Dimension: 61x15x7.5mm Connector: Betafpv BT2.0 connector  Weight: 12.7g(1pcs) Includes 4x BT2.0 450mAh 1S 30C Battery BT2.0 CONNECTOR There is a graph of comparison between BT2.0 connector 1S 450mAh battery and Emax 1S 450mAh battery. The discharge current is 11A in this testing. You could see that it has longer time and improvement in voltage sag with BT2.0 connector, which brings better flight performance.