Topchances 2Pcs 2500mAh 11.1V High Capacity Upgrade Rechargeable Battery Pack Replacement Extended flight times for Parrot Bebop Drone 3.0 Quadcopter Parts - 2pack

Purchased these batteries and not sure if they are faulty or not, charger has only gone green once and both batteries haven't powered drone for more than 2.58 seconds before going flat. Would like some feedback regards sequence of charging or minium charge cycle before optimised power.