UPS batteries

Sep 23, 2026 Last reply: 1 month ago 4 Replies
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I'm due for a new set of batteries, 4x NP17-12 or equivalent. I've bought Yuasa and Tayna own-brand ones, not noticed much difference TBH.



Looking around I see a few of the same form factor, but offering higher capacity, 18 to 20Ah instead of the 17Ah of the originals, are these just likely to be "inflated marketing numbers"?



In article snipped-for-privacy@mid.individual.net>, Andy Burns snipped-for-privacy@andyburns.uk scribeth thus

We have over time bought quite a few of the CSB make they have proved to be very good FWIW

Yes, they're the OEM brand fitted by APC, I think the local Euro Batteries stocks them.

Just replaced a set in one of mine, used CSB to replace CSB as they seem to last fairly well (last set lasted 5 years, and I don't think the UPS is particularly kind to them)

My various APC units have confirmed it's reputation for being hard on batteries. Then I look at such items as my Panasonic DECT 'phone handsets, and my Oral B toothbrush, and wonder why they go on for ever without needing new batteries, but APC seem to regard 5 years as a good life, even though they rarely if ever have to actually do any work. I currently have one APC unit to protect the Humax, and (eventually) an Eaton unit for the PC system. Both batteries are almost the same age. It will be interesting to see how they both behave.

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