Battery connector: MX2.0 plug, Board input: 5V 0.5-2A, Output 3.7V-4.2V 250mA, 5 MX2.0 female port in seat Board box, it can charge 5 battery at same time. Package total include 5 batteryies and 1 Board set.
Battery dimensions:40*19.5*8.4mm /1.57*0.77*0.33 inch, Battery net weight:12grams/0.42oz.
Battery Capacity:3.7V 1S 400mAh, real capacity up to 450mAh,
Discharge rate:25C, Voltage:3.7V, seat USB Board built-in over-charged protection board, red indicator is solid when charging, red indicator is off after full charged.
3.7V 400mAh Lithium rechargeable battery suitable for some old RC Quadcopter Drone, Battery suitable for some old WLtoys V252 XK A100 A120 A130 A150 Q11 RC Quadcopter Drone,