I am replacing my battery which is rated at 9Ah.
Another user is using a motorcycle battery to power his UPS.
Don't want to have to have sulphuric acid vapors being emitted.
I am going with a deep cycle AGM battery. 18 Ah
It has excellent ratings with 70% of buyers giving it a 5 star rating.
I will only have my computer,router and monitor protected and leave my printers on the unprotected side.