Any Hybrid Inverters work with DIY batteries?


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1234enough

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Aug 8, 2022
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Interested to hear if anyone has found a aftermarket bms that is compatible with solax inverters or a work around of, was looking at these Inverters and making up diy battery pack
 

Zuikkis

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Sep 13, 2022
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SolaX X1-AC would be a perfect inverter for this purpose:


But it seems they are now replacing this model with "retrofit" models, that no longer support configurable battery voltages etc. So you must use CAN connected battery.
 
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Zuikkis

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Deye has very interesting solar hybrid inverters with 48V freely configurable battery:

They can charge and discharge to the grid! You can set timers, charge at 5000W during 00-05, then discharge at 1000W at 10-18 for example..

But surprisingly expensive devices.
 

Zuikkis

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Sep 13, 2022
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Bought a 5kW Deye. :)

I'm now building my battery pack. It's from a 23kWh pack from Think City EV. It's quite nice pack, it has 16pcs of 44V modules, 12S li-ion.

Each module has i it's own BMS which I plan to reuse, they communicate with CAN and the protocol is well documented online..
 

Craigeng

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Sep 19, 2022
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Hi, nice to find this forum :)

I tried to write several times to Goodwe and Solax, but I have never had a reply from them.


I am not sure if you are allready aware of this? I would like to share with you:

REC SI BMS for energy storage installations

Stand-alone unit REC SI BMS is compatible with all CAN suported ESS inverters for integrations in PV systems, like SMA Sunny Island, Victron Energy, Studer, Stecca Innotec, GoodWe, Solax, Solis, etc.


and this:

REC BMS MASTER UNIT 9M

REC BMS Master – Slave configuration is suitable for higher voltage systems. It allows to connect up to 240 cells in series and it’s compatible with all REC BMS products.


Regards
I am sure many people are still wondering if there is any feedback from any user of these units?
 

woleg

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May 6, 2022
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Interested to hear if anyone has found a aftermarket bms that is compatible with solax inverters or a work around of, was looking at these Inverters and making up diy battery pack
I am developing a plug and play BMS master that will be compatible with Solax AC units including the new retrofit systems, and potentially HVDC Solis too.

Will be looking for testers shortly.
 

PJProby

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Sep 25, 2022
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The DEYE hybrid inverter works with any low voltage battery, lead acid, lifepo4, li-ion etc.
The inverter (both single phase and 3-phase available) can be programmed very simply to work with any BMS. I had a Storedge hybrid inverter of excellent quality but it is very limited in choice of batteries so I replaced it with a 10 kw DEYE three phase hybrid inverter and sold the Storedge in the 2nd hand market. Evidently the help desk of Storedge refused any cooperation to utilise another battery then their own choices stating nonsense safety requirements as reason.
 

Craigeng

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Sep 19, 2022
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The DEYE hybrid inverter works with any low voltage battery, lead acid, lifepo4, li-ion etc.
The inverter (both single phase and 3-phase available) can be programmed very simply to work with any BMS. I had a Storedge hybrid inverter of excellent quality but it is very limited in choice of batteries so I replaced it with a 10 kw DEYE three phase hybrid inverter and sold the Storedge in the 2nd hand market. Evidently the help desk of Storedge refused any cooperation to utilise another battery then their own choices stating nonsense safety requirements as reason.
Hi PJ, yes many manufacturers are not wanting to share info or knowhow... Think they want their little monopoly... but hey they have probably invested millions?
I am more looking at HV batteries due to size and charging speed, the cost for a few Kw of LV batteries and the equipment required I don't think would make a dent in my Bills.
Take into account I live on a farm burning oil....
 

PJProby

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Sep 25, 2022
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Hi PJ, yes many manufacturers are not wanting to share info or knowhow... Think they want their little monopoly... but hey they have probably invested millions?
I am more looking at HV batteries due to size and charging speed, the cost for a few Kw of LV batteries and the equipment required I don't think would make a dent in my Bills.
Take into account I live on a farm burning oil....
Hi

Deye also makes hybrid inverters three phase for high voltage batteries (160 - 800 V). They are rated at 25 - 50 KW. Look at www.deyeinverter.com
A big advantage of the one I have is that it is grid connected but the batteries take automatically over when the grid fails
 
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