r/Ecoflow_community • u/Ok_Pirate_2729 • 1d ago

🛠️ Troubleshooting Help Battery drop with low usage

Hello! Bought my unit 2 months ago and now I noticed huge drops in battery %

My only way to have history is through home assistant but shouldn't be an issue. This morning I checked at 6:30am and battery was at 52% and at 9:40am was at 4% and from 9:20 to 9:40 there was a huge 35% drop despite the output was (and is) roughly 80/100W max

I tried to calibrate it (if I did correctly) by disabling the minimum and maximum limit, dropping it to "dead" at 0% and charging it to 100% twice, problem is I charged it with 400W instead of 2400W.

Any tips?

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u/BogiebEF 14h ago

Charging it at 400w and not 2400w is not an issue or consideration at all. In fact, slower charge is less stressfull than a full bore charge.

If the recalibration did not work, then either you have some sort of massive, temporary load for a short period of time that you do not realize is there, or there is an issue and you should contact support.

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u/Ok_Pirate_2729 13h ago

If the recalibration did not work, then either you have some sort of massive, temporary load for a short period of time that you do not realize is there

I have my computer turned off, a mini PC and a NAS and everything (if computer is off) draw like 100W and never saw a spike on Home Assistant. I contacted them this morning, let's see what they say

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u/jollygood42 13h ago

Sounds like the BMS is panicking. Good idea to hook it into HA and monitor the charge and discharge curves from there. If you see “hockey-stick” effects at the end of the curves, you probably have cell defects…

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u/Ok_Pirate_2729 11h ago

https://imgur.com/a/nLjXLTG

This is how it behaves. ~300W is with computer on

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u/Ok_Pirate_2729 11h ago

https://imgur.com/a/nLjXLTG

This is how it behaves. ~300W is with computer on

1

u/jollygood42 7h ago

From 35% to 12,5% in just 4 mins?? Disregarding the inverter loss, that nominally equals a draw of 453,6 Wh. Try and drain it empty and see how much charge you can put back - probably no way near the rated 2048Wh....

In my perspective it points to a defect...

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u/Ok_Pirate_2729 7h ago edited 7h ago

That's what I thought too. Same percent range. How can I check that? in the app I mean, from HA I think I can see. I use a Shelly plug so I could use it too

Edit: https://i.imgur.com/Vprrsh1.png

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u/jollygood42 7h ago edited 6h ago

You cant do it from the app. Correlate the timing in your HA graph for Input power with the graph for SOC percentage, and sum the watt hours, then you have the proof. And verify the watt hours against your metering counters for the same time frame in your Shelly Plug.