I'm not sure if not having paired batteries is causing that but you definitely need paired batteries. I would get at least 4 new batteries so you have an extra pair to swap to. Pair the batteries up and use the paired batteries together, don't interchange the pair. You also need to make sure you charge the pairs together, so you will need at least a 2 battery bay charger. Illumn.com has VTC4s and Samsung 25Rs for $7 or $6 each respectively, and you get a free case with each pair of batteries you buy. They also ship pretty quickly so you should have them in 3-4 days.