I know from your other post that the date on REL2 was due to a mistake with the date on the system and is not really 10 years old. The system will reload from REL1 (as it is the newest) after a power outage. If REL1 does not have the configuration you require, get the sytem to a condition you are happy with i.e. with no blocked boards and with extensions with the correct category, then do a DUSYI. This will overwrite REL2 with a more recent dump.
For the near future; get a more reliable mains power source and get replacement batteries.
In my experience, repeated power cycling will shorten the life of hardware on your sytem so you might face a more serious problem in the future if you fail to address the battery issue.