I'd still try charging as a NiMH to see if voltage will recover. These have been sitting somewhere a long, long time since self discharge on lipo is very low or they were not charged very much from factory to start with and have sat long enough to drop below the min voltage the charger will charge as a lipo.

Either way, from what I've read HobbyCity is pretty poor about doing anything about them. Send them email and they'll prob say send it back (your expense). I've seen where even after beingtold to send them back, after they get them they don't do anything.