A charger suitable for 1S (3.7 V) batteries used in microcopters such as Syma X5, Cheerson CX-30 or Tiny Whoop (with an adaptor). The charger is capable of charging 5 packs at the same time, which greatly reduces your ground time.
For charging Tiny Whoop batteries (Acehe 210mAh or Eachine 200mAh) the Micro JST 1.25mm adaptor is necessary..