You want to set the charger on lipo balance charge mode. Plug the balance plug into the charger, and the main "deans" plug in. Set your charge rate, and set it to 11.1V. When you hold the start button it should say something like 3s--3s confirming you have selected 3s and it is reading 3s. If it is not reading 3s then you battery voltage is too low. Maybe your packs have been sitting too long? Maybethey are damaged?