Battery Replacement with Smaller Blocks
When the original batteries on a UPS needed replacing, the customers load had reduced (over the years) to about 10% of the UPS capacity.
So rather than specify 10 minutes back-up at full UPS load, it was decided that 10 minutes at the lighter load was all that was needed.
The UPS was de-rated via the set-up software and battery fuse sizing was reduced.
New smaller battery rack installed with feet spacing to mimic the previous rack