Hi. I have NBN back up unit beeping, LED indicates bad battery. My NBN connecion originally was done through DODO and there was no back up unit, but later, when I switch to TPG, your team insisted that without NBN back up unit connection is not possible and organised NBN tech to install back up unit. Can you replace the battery now or revert to original state? I do not have life support or land line in my house at all.
... View more