Comments on: Eaton 5P 1U Lithium Ion Rack Battery Unit Review 5P1500R-L

By: Sean Harlow

Sean Harlow — Thu, 04 Nov 2021 15:15:57 +0000

I really appreciate that you gave so much space to pointing out how absurd it is that network management is an expensive optional addon for a device in this class, because that is absolutely true and more vendors need to be called out aggressively and repeatedly on this BS.

I just have one minor complaint, where you say “In the 2020s, this is starting to feel like it should be a part of the product rather than an add-in card.”

I think that should have started in the 2010s. There has been no good excuse for making network management an optional feature on anything intended to go in to a rack for years now. It should be considered mandatory and all products that don’t include it by default should be shamed. Home class stuff, whatever, but if it’s marketed to a business network management should not be optional.

By: Roger Gabel

Roger Gabel — Tue, 02 Nov 2021 06:27:54 +0000

“Instead of passing judgment on how these units are made…” – isn’t this one of the points of a review site to provide objective assessments on hardware?

By: Gabriel Ramuglia

Gabriel Ramuglia — Fri, 22 Oct 2021 19:16:06 +0000

Bob, quick search on LTO sounds like those would be good for grid storage applications due to high cycle life, and rapid charge / discharge.

Not seeing a strong reason to use LTO in a UPS instead of LifePO4. Cycle counts are minimal in a UPS. Long charge times are not usually an issue. High discharge rate would be an advantage but tolerable to use LifePO4 here anyway. LifePO4 is considered one of the safer and more stable chemistries as well.

By: Gabriel Ramuglia

Gabriel Ramuglia — Fri, 22 Oct 2021 19:07:33 +0000

Interesting product. What else is in this product line?

I wonder who is providing rack-scale 208v Lithium UPS? Say, 30a circuit / 6KW or thereabouts. Would probably need to be larger than 2u.

What kind of costs are these products? MSRP would be good to know.

By: Bob H

Bob H — Fri, 22 Oct 2021 17:05:04 +0000

Correcting my previous comment, it’s a 38.4V battery with 5Ah, I missed that photo.

By: Bob H

Bob H — Fri, 22 Oct 2021 17:01:17 +0000

I was a little surprised at the remark about Li-ion batteries losing capacity over time, I could do with context that they could last measurably longer than SLA batteries.

Nice use of a 1U transformer in there, I’ve never seen one that heafty before!

I’m curious as to what the nominal voltage and Ah of the battery, I couldn’t make it out from the pictures. It would be interesting to see a LTO UPS because of their high endurance and inherent safety, which I am sure would make some people less nervous about putting them in a rack of expensive equipment.