PU420 Powerline UPS Battery Pack
Great value when you need to rebuilt your UPS battery - much cheaper than the pre-built and just as good These loose batteries replace those that are pre-assembled for your specific UPS. You'll need to take and reuse some parts from the originals - the connectors, the block-style fuse and the terminal covers, then use double-sided tape to join the batteries together. Since that is the construction method of the originals then it seems quite good enough. You'll need the appropriate spanner, a cross-head screwdriver, the double side tape and about 30 minutes to do the whole job. Simple. Quick. Cost-effective.