Yes they may not but you will aways need to use a tiny screw driver to bend the connectors metal parts to make them fit tight as with the cheap tamiya connectors when you use them they lose contact due to the spreading of the metal contacts (poor desighn)... even battery chargers with the male end you always have to do what i said above because you will get false peaks from your charger if you don't always readjust the plugs contacts.