Hubby and I have the same exact battery....and this was done after they were both fully charged. Anyway...i picked up hubs battery and put my stardust on it. The draw was extremely tight???? Almost impossible! I put it on my battery and the draw is not tight at all. I put my vivi nova on his battery and the draw was fine. His stardust works fine on it too. Only my stardust will not work on his battery????? What in the world could be going on here?