BC-4S15D 2-4S Lipo Battery Balance Charger With Voltage Display for RC FPV Quadcopter Frame Drone Eachine E250 Specification: Item: BC-4S15D Battery Lithium Lipo Balance Charger with Voltage Display Parameters: Operating Voltage Range: 9V-16V DC Operating Temperature: -20-45℃ Cells Type Supported: 2-4 cells Li-lon/Li-poly Input Power Request: Recommended 30W Max Charge Power: 25W Charge Current: 1500mA Charge Accuracy: ±10mV Balance Current: 1000mA Display Accuracy: ±10mV Weight: 95g Size: 80mmx50mmx20mm 5.5mm MALE DC POWER PLUG cable to DUAL ALLIGATOR CLIPS: DC Power Plug Connector With Cable and alligator clips -Full Length: about 25cm - Type: 5.5x2.1mm - Outside Diameter: 5.5mm -Inside diameter: 2.1mm - Wire: 22AWG Features: Ready to charge, one step to finish charge process Ready to display, display the voltage at any time High charge accuracy, ±10mV(max) Multi-protection, keep charging safe Auto recover the over charging battery Save energy, balance process don't need discharge Package Included: 1 x BC-4S15D Balance Charger