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Edited March 4, 2024
at 09:20 PM
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you are misunderstanding the old school ways of setting charge modes and profiles for lead acid batteries. the charge mode and float mode are legacy methods associated with iron core transformers and liner voltage regulators when you needed to physically switch between current levels and voltage levels.
modern chargers current charge up to a taper voltage level then switch to constance voltage mode which is typically 13.5-13.8v. anyway I am sure your understanding is lost in semantic nuances. it's not your fault but I want to help people in the thread understand how it works enough to have the right perceptions.
I won't get into the chemistry but when you put an SLA cell above about 14 ish volts you start to dissociate hydrogen in the electrolyte. That is gas. You may have noticed flooded batts are vented and SLA batteries have pressure release valves built in for this reason to prevent bad things . see this great article here
https://www.batteriespl
Don't tell me to stop. I'm just correcting you erroneous statements I'm not trying to pick on you. I think you are just extrapolating wrong statements from some simple misunderstandings of the electronics and battery systems
Trust an EE PhD as hard as that might be.
have a great day. and happy to direct you to good articles if interested.
The charger in a UPS is designed for SLA will cut off charging when the battery reaches 12.46v and shut off the UPS when the battery drops close to 11.59v. That means the LiFePO will never be full charged or discharged. So in that sense it's safe to use in a UPS.
However because it will keep the battery to SLA specs, you'll only be using approximately 23% of the battery's capacity. So that 10ah LiFePO will behave more like a 2.25ah SLA battery in the UPS.
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I also have a dual 10ah battery APC model that I'm considering trying a pair of these eco-worthy but I'm not sure how well these will work in series, ie. if there are any charge balancing issues.
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The other thing is the UPS won't be able to reliably give you the % battery remaining because the LFP voltage curve is very flat.
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If you can make 2 batteries UPS to work with those lifepo4, please share how to.
If you can make 2 batteries UPS to work with those lifepo4, please share how to.
It currently supports my gaming desktop (5800X3D + RX 6900 XT). The batteries haven't arrived yet, but I'm excited to see how they perform.
If you can make 2 batteries UPS to work with those lifepo4, please share how to.