I have a flaky charger, that will do the same thing. Plug a dead batt in and 10 mins later the charger light is green but the battery is near dead. Since its new it shouldnt be a problem, but maybe wipe out the charger and battery threads with a q-tip and rubbing alchohol. When you plug your battery in, tap it lightly and if the charge light turns from green to red back and forth, you got a iffy charger. FYI, once the green light comes on, i think the charger isnt kicking any juice, so no need to keep battery after green light comes on.