What Does Battery Voltage High Mean. If your car battery voltage is discharged or has less than 124 volts the power decreases dramatically. When we drive our car the bat gauge is in the normal 11-15 volts range but after a little while of driving its slowly creaps up toward the 18 volts end which is in the red area.
Each battery is complete with 6 separate cells that each contains 21 volts for a total of 126 volts. The voltage of the electricity flowing through the wires in most homes is at least 110 volts and may be as high as 220 or 240 volts. Voltage is only part of that equation though.
A simple problem of loose wires and connections can cause your battery voltage to fluctuate.
Nickel cadmium cells can tolerate very high charge rates without damage. Consider trying to rinse a plate by dribbling water onto it from 2 different buckets. NiCD or NiMH cells are rated at 12 volts but their fully charged voltage can easily range to 145 volts per cell. In the figure the battery of the same capacity continues to discharge the test curve under the same current 40C it can be seen that the high-rate batterys discharge voltage is high and the voltage drop is gentle and more capacity is releasedDue to the internal resistance of the high-rate battery is small low loss during large current.
