Pull the tops of the battery off and pour sterilized water in he open ports. Then charge the battery as normal. If it doesn't hold the charge then you need to replace the battery.
Dead cell in battery, replace it.
No. A battery that will not take a charge has a dead cell. It cannot be repaired and must be replaced.
Recharging unless it has a dead cell or will not take a charge. In that case it needs replacing.
Do you mean charge by the vehicle running....or do you mean take a charge from a Bench charger? if its in the vehicle it could mean that either the battery/battery connection/cables, a faulty ground, or the alternator is defective. If its on a bench charger then the battery has a dead cell or is defective and needs replacing.
Replace the battery?
Yes, but it will take a very long time if the battery is dead.
It varies depending on how much other electronics you are using on the vehicle at the time. Could take hours. I do not recommend you charge any dead battery with the alternator if you can avoid it. it puts too much of a strain on the alternator and may damage it. Charge a dead battery with a battery charger.
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.
If the battery wont take a charge, the cells are dead. replace with a new battery. Good Luck
No, this will place a very heavy load on the alternator of the car and may result in burning out the diodes of the car charging the battery. You could easily ruin the alternator. Purchase a battery charger and charge the dead battery with that. Alternators are not made to charge dead batteries.
A click and no lights is an indication of a loose battery cable. Also, the battery may have a dead cell and won't take/hold a charge.
below its desired voltage