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Closed Circuit Voltage
Closed Circuit Voltage
(incoming inspection test)
  • The open circuit voltage reading, no load applied, of a battery or pack can be misleading.  A closed circuit voltage test, battery under load, is used to create a voltage drop in the battery. The amount of the voltage drop is a good indication as to the condition of the battery.
  • Multiply the number of cells in the series pack by the load resistance.  Multiply the number of cells in the pack by the “minimum voltage per cell to pass”.

Example:  4 E91 series battery pack
4 x 10 ohms = 40 ohm Load
4 X 1.4 volts = 5.6 minimum pack voltage to pass














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