Review on Power Your Quadcopter With 4 3.7V 500MAh Lipo Batteries And X4 Charger Set - Compatible With UDI U818A RC Drone Series by Sara Wells

So I got these and was very excited to have the extra juice. So I charged them up and gave them a shot. After under a minute the batteries were dead! Surprised, I recharged them, but this time with a two separate chargers. Two were charged with the supplied charger, two charged with a charger from a previous set of batteries I had. After they were full charged, I tried again. Much to my dismay, they were still dying in under a minute. My drone builder supplied batteries lasted over 7 minutes, these just don’t have any staying power.Buy the oem kind. Unless my set was a dud, these just can’t keep up.The life tests were performed in a closed garage, and the drone was simply set to hover just above the ground until the battery died.