How To Test A Ups Battery With A Multimeter. This is the figure youll use to compare to the reading on the multimeter. How To Use A Multimeter To Test A Battery.
This is the figure youll use to compare to the reading on the multimeter. This is an optimum range for measuring batteries within 20V. Answer 1 of 15.
For your battery to pass a load test the multimeter must read between 95 to 105 volts straight for 30 seconds when the battery is tested.
Switch on the headlights for 2 minutes. Turn the switch dial of the meter to DC voltage measurement to measure the voltage properly. Then connect the black probe of the multimeter to the negative. The only way I would do it in your situation is take a system preferably a laptop and got to each UPS and plug it in preferably not an important laptop in case the UPS is bad and shuts in down then unplug the UPS and see if the laptop stays on and if the UPS gives an alarm and or beeps.
