Are JST connectors suitable for 3S LiPo packs in small RC planes?

Question: Is a JST connector safe for 3S packs on small RC planes?

Answer: JST connectors, particularly the common JST RCY type, are generally rated for around 3A continuous current. For 3S LiPo packs used in small RC planes, this may be borderline or insufficient depending on your motor and ESC current draw. To ensure safety and reliability, first check your pack's maximum current draw. If it exceeds 3A, consider using a higher-rated connector such as XT30 or Deans. If you decide to use JST connectors, make sure the wires are thick enough (at least 20AWG) and the connectors are properly soldered and insulated. Also, regularly inspect connectors for any signs of heat damage or wear. In summary, while JST connectors can work for low-current 3S setups, it's safer to use connectors rated for higher current to avoid overheating and potential failure during flight.