how can we check a fully charged battery?

Answer Posted / raghavendran

Consider a 12 volt battery having 6 cells and each cell
charged to 2 volts.When the cell is fully charged then the
total voltage across the battery will show 12.6 volts under
no load condition.Then it means that cell is 100% charged.

2) if it shows 12.4volts, then its 75% charged.
3) if it shows 12.2 Volts then it is 50% charged.
4) if it shows 12.0 volts then it is 25% charged.

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