Grumpycat
Elite Member
Okay that makes sense but the reduced amps does not make sense to me. If one cell is shorted then I would expect that the other 5 would still put out their amperage. So I would think a 600 CCA battery with one shorted cell would then put out 500 CCA. Assuming that a shorted cell is just that, a short circuit.
The charging current is higher to force the good cells to a voltage greater than they should be. The good cells get damaged then have less energy, lower total voltage due to the shorted cell not contributing.
Items such as incandescent headlights and electric motors tend to draw greater current when voltage is low.