I have a Q500 4k. I bought 2 new aftermarket batteries, and both read as damaged on an aftermarket charger, but my old original yuneec battery is fine and charges. There is about half charge in the new batteries and holding. Could they be out of balance, and how would I balance them? I can fly the drone with the power that is still in them. I moved and left the factory charger behind, that charger charged an aftermarket battery (GI-FI) that I bought just fine. Pictured is of the new batteries I just bought.