Update:
- Tried on another charger at my hobby shop and still had the same issue. Charger can't find battery.
- I am still able to balance discharge the battery by just hooking it up to the balancer. It completed successfully.
- I used my voltometer to measure the current in the battery. It was 6.8V. So the battery seems good.
I would guess its the balancer, unless I am missing something.