4 Port DC5V 1S RC Lithium LiPo Battery Compact Balance Charger for RC Quadcopter is a battery charger. it comes with battery overcharge protection and also reverse polarity protection.

Features :

• Overcharge protection.
• Reverse polarity protection.
• Over-temperature automatic current regulation.
• Applicable models: General market small bald plug 3.7V lithium battery
• Many models Hubsan Syma UDI FY JXD and other applicable

Support Model :

• Hubsan: H107, H107L, H107C, H107D
• Wltoys: V977, V930, V202, V252, V939, V933, V955
• UDI: U816, U816A, U830
• JXD: 385,388,392
• Syma: X5, X5C
• FY: FY310, FY310B
• YI ZHANG: X4
• JJRC: 1000A, 1000B, 5000
• DFD: F180