The UPS is warning me to change te battery's. There is also a ERM connected to the UPS with 2 battery packs in it. Are they also checked if they have to be changed? If not can i test those packs to take them out of the ERM en put them one by one in the UPS en then do the self-test?
If it is possible to test them this way? Or do i have to disconnect the ERM from the UPS before testing? If so, can i disconnect it online or do i have to take precautionary measure?
