I'm back into R/C planes and have this AC6 charger from about five years ago. I have noticed when I go online to look for battery packs to buy the balance plug looks different from the ones I bought before. Is my charger out of date? Have all the battery companies changed their balance plugs? The battery pack I have left is from an old Hawksky kit. Everything online says JHT XS series. I don't know what kind my old battery has but they look almost the same but I don't know if they will fit into my chargers ports. I hope this makes sense.