The battery of my APC BACK-UPS BK650-AS USB 650VA only lasted me about three years. A new APC Replacement Battery, RBC #17, costs S$113, 56% of the cost of a new APC BACK-UPS BK650-AS (~S$200). It doesn’t make financial sense to replace the battery.
After my APC BACK-UPS BK650-AS battery spoiled, I decided to use both of my Network-Attached Storage (NAS) as it is at my new house. However, my house’s electricity keeps tripping randomly at least once a month for various reasons.