#redflow — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #redflow, aggregated by home.social.
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For those who've been following the saga of our solar PV & battery storage system, the latest news is that I decommissioned our last Redflow ZCell a week ago in order to have two stacks of three Pylontech Pelio batteries (https://en.pylontech.com.cn/products/Pelio) installed. As described in my last blog post (https://ourobengr.com/2025/12/what-happened-next/) I'd pushed the failing ZCells as far - or possibly further - than could reasonably be expected. These new batteries work just fine with our existing Victron inverter/charger gear, and give us just under 30kWh of usable storage capacity. I'll do a proper writeup in due course once they've got a few more miles on them, but for now here's a picture.
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What Happened Next: https://ourobengr.com/2025/12/what-happened-next/ - another post about our 5.94kW solar array with Redflow ZCell battery and Victron Energy inverter/charger system.
I managed to get about six months out of our most recent ZCell before it started leaking (not good for something that was allegedly warranted for 10 years) but I patched it up and am continuing to nurse it along until we're able to migrate to something else.
I will continue to write about our system in future, but this post will probably be the last that covers Redflow batteries in any detail.
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Yeah... That went well: https://ourobengr.com/2025/08/yeah-that-went-well/ - The latest in my long series of posts about our 5.94kW solar array with Redflow ZCell battery and Victron Energy inverter/charger system, wherein our battery that replaced the first one under warranty itself failed for the same reason. Happily we were able to get it replaced again, but not through Redflow who no longer exist. I've also included some speculation about why these batteries fail, and some possible mitigation strategies in case other folks with ZCells are still running and want to stay that way.
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"And because #Redflow was small, it was forced to rely on repurposed third-party components. This put it at the mercy of other manufacturers, who would regularly decide Redflow's small orders weren't worth the trouble."
Build it with generic components you can get from any supplier, or scratch-build the whole thing yourself.
Reminded of a comment by the CEO of Williams International about their factories - Metal ingots come in one end, Jet Engines go out the other.
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I am looking for #electric works to run two 3kW pumps for #bushfire #protection (two pumps, 3 hours running time = 20kWhours of stored energy, I suppose).
I'd hoped to use two #Redflow batteries for the purpose, but I am getting 'nup, we do Tesla powerwalls' from installers. Who knows why please?
I don't want to give Elon any money if I can avoid it, and I'd prefer a battery that is made locally.
That being said, maybe I need to get off my high horse and get on with pumps.
Anyhow, thoughts?
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Still Going With The Flow
It’s time for a review of the second year of operation of our Redflow ZCell battery and Victron Energy inverter/charger system. To understand what follows it will help to read the earlier posts in this series:
Go With The Flow (what all the pieces are, what they do, some teething problems)Hack Week 21: Keeping the Battery Full (an experiment in working around the limitations of a single ZCell)TANSTAAFL (review/analysis of the first year of operation)
In case ~12,000 words of background reading seem daunting, I’ll try to summarise the most important details here:
We have a 5.94kW solar array hooked up to a Victron MPPT RS solar charge controller, two Victron 5kW Multi-Plus II … Continue reading →
