Futaba Tx 2.5mm to 4.0mm Gold Plated Stackable Shielded Banana Plug Connector RC Charge Cable Wire EC3 Male 22AWG PVC 30cm

TX JR/SPM 2.1mm to  4.0mm Gold Plated Stackable Shielded Banana Plug Connector RC Charge Cable Wire EC3 Male 22AWG PVC 30cm

Package: 1pcs Charge Cable Highly flexible 22AWG  PVC cable 30cm long The 4mm plugs on the charger end stack, so you can parallel charge if needs be. The 4mm plugs on the charger end have clear spring loaded insulation covers to prevent short circuits