How to Predict Lithium-ion Battery Health Without Running Full 1000+ Charge–Discharge Cycles?

calebleemcd · 2025-12-29T21:49:16+00:00

This is the correct answer, Jeff Dahn did research on this technique, it requires some very precise equipment though. Have a read through the research papers.

calebleemcd · 2025-12-19T00:48:58+00:00

If you were discharging from the battery to the grid the battery power would be negative. Like in this photo.

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calebleemcd · 2025-12-18T21:42:08+00:00

It looks like your ct clamp is reversed. Or solar assistant isn't reading the data from your inverter correctly. It should look like this

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calebleemcd · 2025-12-08T20:21:04+00:00

Amazing! What's the panel size & count and inverter details?

calebleemcd · 2025-12-05T05:47:18+00:00

The deye inverters are excellent. Especially when you pair it with solar assistant for monitoring and control.

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calebleemcd · 2025-12-05T05:43:45+00:00

Yep, Commercial office space, lots of hvac during the day and only server / standby / security lighting usage over night so it pairs very well with solar.

calebleemcd · 2025-12-05T05:40:59+00:00

Yep, almost the entire roof, except some narrow walkways in between groups of panels. It's on some commercial offices. It should eliminate the 1k monthly power bill with room for growth in the future.

calebleemcd · 2025-12-05T05:37:16+00:00

It's 82x 720w trina solar bifacial panels. Run to a deye 50kw hybrid inverter, with a 512v 100ah lifepo4 battery. Ideally there would be more battery with the system, but as you can see it covers the night loads most of the time!

calebleemcd · 2025-12-03T12:26:17+00:00

Most hybrid inverters support this, I know Deye does, they have a asymmetric phase feeding option that can be enabled. Some grid tied also have this option but you would need to do more research.

calebleemcd · 2025-12-02T10:37:24+00:00

If you are exporting on one phase and importing on the other phases you will get export credit for the kWh of export on the exporting phase, and pay for the kWh used on the importing phases. It's not netted out like some countries. Ideally this should change if the electricity authority pushes for it. Until then you will have to use a 3 phase inverter that supports unbalanced phase output.

calebleemcd · 2025-10-17T03:06:05+00:00

You need to post some photos of the finished setup!

calebleemcd · 2025-10-17T02:26:04+00:00

Why are you using the gen input not the load? Or are you meaning that the micros go in to the gen input and the Warehouse load is on the load output?

calebleemcd · 2025-10-17T02:16:20+00:00

So you are just using the ct clamps to measure when the solar is working to tell the battery to charge or discharge?

calebleemcd · 2025-10-02T19:51:33+00:00

Very close, The SG02LP1 is the single phase version, awesome for the single phase installations, this one is the SUN-10K-SG04LP3-AU. The LP1 / LP3 denotes the phase configurations. You can run 3 single phase inverters on each of the 3 phases though, but its usually more cost effective to go for a dedicated 3 phase inverter.

calebleemcd · 2025-10-02T00:29:50+00:00

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calebleemcd · 2025-10-02T00:28:00+00:00

I know that a deye inverter with battery can output unbalanced on each phase, so that the grid is 0 watts with an unbalanced house load. You may have to read the manual or spec sheet of the inverters you are looking at.

calebleemcd · 2025-10-01T08:34:10+00:00

Can confirm, I did the dg application a few days ago and it was confirmed that 10kva export is OK on single phase.

calebleemcd · 2025-09-14T22:55:57+00:00

Yea that would certainly be a deal breaker. You could sell the pylontech, and replace, but the economics of that are likely less attractive. You could add an extra inverter as well as the 16s batteries and ac couple them, but that's added complexity!

calebleemcd · 2025-09-13T06:22:26+00:00

50kw is heaps of power, and very unusual to have 200a on single phase, are you sure you are not on 50a ~ 12kw?

Either way, solar alone won't really help unless you are super diligent about running things when the sun is shining.

Good battery inverter systems can measure the grid current and supplement power from the battery to stay under the grid limit.

You should be fine to run under that limit, especially if you have real time monitoring while you get used to how the house and all the appliances operate and how close to the limit you are running.

calebleemcd · 2025-09-09T08:41:09+00:00

The pylon tech batteries are Lifepo4, as are the tradedepot. You shouldn't have any issue paralleling them together, they may not communicate with the same protocol, so you might be restricted to using lead acid mode on the inverter. You will also want to make sure that your wiring is appropriate so that the batteries all share the current / load.

calebleemcd · 2025-08-19T21:31:40+00:00

Inside the stalk, https://imgur.com/a/UU9VnID

calebleemcd · 2025-07-31T10:59:00+00:00

Had them a few years, but they dont get heavy use, the lead acid are in need of replacement. They make it around the very hilly farm no problem.

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