Hubsan H501S H501A H501M H501C RC Quadcopter Spare Parts 7.4V 2700mAh 10C Original Battery H501S-14 AutoCharge it means the receiver is

it means the receiver is in BIND MODE 2

reduce the failure rate

Increase the input and output capacitance appropriately

Made of quality PCB and Plastic material

it will stop flying and drop down automatically

Hubsan H501S H501A H501M H501C RC Quadcopter Spare Parts 7.4V 2700mAh 10C Original Battery H501S-14 AutoCharge it means the receiver isHubsan H501S H501A H501M H501C X4 RC Quadcopter Spare Parts 7. 4V 2700mAh 10C Original Battery H501S 14 Description: Brand Name: Hubsan Item No.: H501S 14 Item Name: Battery Voltage: 7. 4V Capacity: 2700mAh Power: 10C Energy: 17. 02Wh Maximum charging power: 7. 4W Weight: 105g Dimension: 98. 6mm x33. 2mm x16. 1mm Charging time: About 150mins(Charging current is 1A) Usage: for Hubsan H501S H501A H501M H501C X4 RC Quadcopter Package Included: 1 x