A SmartUPS 3000 was showing a red light on the bad battery LED (Battery with X)
I swapped the battery of SmartUPS 3000 RT with a new RBC43 battery and held down the test button for 3 seconds. It still showed the bad battery LED with a red light.
I then put the new RBC43 battery in another SmartUPS 3000 RT unit and it tested fine.
Is it safe to assume that the UPS unit is faulty?