On 4/9/25 11:21, Gary Sparkes wrote:
So, they're all selling LFP units.
LFP is a type of lithium-ion battery. I could (and do) call a LiFePo4 cell a
lithium-ion battery and be 100% correct - because it is. LiPo's, NMC/PO4 (be it
in 18650 or other formfactor, etc), LFP, you name it, they're all lithium-ion
batteries because that's the mechanism they operate by. They're just different
chemistries and formfactors of lithium-ion batteries.
https://www.eaton.com/us/en-us/products/backup-power-ups-surge-it-power-distribution/backup-power-ups/lithium-ion-batteries-/eaton-9-series-lithium-ion-batteries.html
This liebert information sheet (second link of products after eaton in my list) -
https://www.vertiv.com/491005/globalassets/products/critical-power/uninterruptible-power-supplies-ups/vertiv-liebert-ita2-ups-3-phase-208v/vertiv-liebert-ita2-three-phase-ups-vrla-li-ion-br-en-na-sl-26270-web.pdf
- from this information sheet - "Safe and Reliable: Both VRLA and Li-ion ensure
safety and reliability. Lithium-Ion (LiFePO4) battery chemistry is safest and integrated
battery management system (BMS) also ensures safe and reliable operation."
The few APC MSDS (Materials Safety Data Sheet) sheets I glanced at indicate
Lithium Iron Phosphate as the cell ingredient as well - which means LFP
chemistry. So they're shipping LiFePo4 cells as well. Weird they didn't make it
(easier) to find that, though. https://www.apc.com/us/en/faqs/FA158828/ - I
looked at XBP48RM2U-LI_NAM_EN_SDSV1.0.pdf and
SMTL750_1000_1500_LI_EU_EN_SDS_V2.0 (1).pdf
That second sheet shows that
https://www.apc.com/us/en/product/SMTL750RM2UC/apc-smartups-line-interactive-750va-lithiumion-rack-tower-2u-120v-6x-nema-515r-outlets-smartconnect-port+smartslot-short-depth-avr-lcd/?range=61915-smartups&parent-subcategory-id=88976&selectedNodeId=23679172486
is a LFP based UPS system.
Though not all models - you can see from APCRBC173-LI_NAM_EN_SDS_V1.3.pdf that
specific pack is NMC. So you'd just have to investigate each model to see what
it is.
So yes, all four are selling LFP units, though APC seems to be a bit harder to
pick out which is which, not that it really matters much anymore from a safety
perspective, but if it concerns you, the information IS available.
I'd feel perfectly comfortable with any of them technology wise these days (and
in the past, too) though.
Most Li-Ion batteries sold for stationery applications will be LFP, just
because they are cheaper and more thermally stable.
NMC is not far off, but it doesn't make sense for stationery
applications. You'd just be wasting energy for no gain.
Mark.
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