They fit the Triton I charger.We need to know what batteries they are. If they are the same as the triton I but different thread, then they are likely 510 thread, not 808 thread like Triton. In that case, yes, you need different chargers, 510 threaded chargers.
I have these. They work fine.
$8.56 510 USB Charger for eGo E-Cigarettes Battery (10-Pack) - white / 24.5cm at FastTech - Free Shipping
However, you can find these in the USA, too. But you will pay more.