It is better than a 50% charge but not as good as a 100% charge.
Yes.
No, It will charge ok while connected in the motorcycle.
You need to add electrolyte and charge the battery. You will then know if it is ok. It may be fine, and it may not be.
yes, it's OK to charge the battery. A switch like this is controlled by voltage so low voltage could make the switch not work.
It is always good to charge a battery to its full capacity before it is fully charged.
charge the battery should be ok
Only if it's flat and refuses to charge and the electrolyte is OK...
yes
Bad battery won't take charge Bad battery cables Fuseable link
take them out . you should charge battery then be ok.
NO, you can damage it.
When it will not hold a charge nor take a charge it is defective. Of course something might be on pulling power from the battery. Any light or stuck relay. Disconnect the negative battery cable, charge the battery with a battery charger and let it sit overnight. The next day if the battery is still charged it is ok and you have something pulling power from the battery. If it ran down the battery has a dead cell and is defective.