Ok so I will give a bit of an update on my 8kw OmniVolt.

I have installed everything and am running 6 x 600w panels through the one MPPT. Solar is working great.

Had a few niggles with the programming and discharge of the battery. I have found that the inverter is an SRNE, specifically the ASF48100s200-H (can be seen on the comms PCB and Inverter PCB). This is the same one that is in the Sun Gold Power inverters. Seems to be a pretty good inverter from what I can find online. I have attached the manual which has ALL the information and settings 😅. This should make everyones life a bit easier. The ASF number actually corresponds with the 10kw inverters, so I would assume they just using a downrated 10kw in the 8kw Omnivolt...

If your battery is discharging to 10% like mine was, you need to update parameters 58 onwards (look in the manual). These are the SoC values, where all the earlier values correspond to voltage.

I am still having some weird things happening, like it changed the communication between the inverter and the BMS back to RS485, instead of keeping it on SLA.

The last issue I am having is that the ESS app does not show any of the LOAD states. I can get the BMS and Solar info, but nothing on the load. I have also tried using the IPower App which communicates with SRNE inverters, but I can also only see BMS and solar info. Not sure if everyone else is managing to see the load information?

SRNE-10KW-Inverter-ASF48100S200-H-User-Manual_compressed.pdf

Hi and thank you very much for this.

Are you able to change the Boost and Float voltage as mine is stuck on 57.6 Volts. My Charge Current also remains below 35 Amp regardless if I try and change it.

I see in the Manual when Battery is Li16 the Voltage should be 56.8V, yet mine is stuck on 57.6 which I believe is causing Error 64.

Getting Alarm 64 when Grid kicks in, which usually clears on its own.

I also only see PV and Battery status on the App, seems to be locked also.

Edited March 24Mar 24 by Henrdrik

So after playing around with the unit I managed to change the Bulk and Absorption Voltage to 56.8.

But I had to change the BMS Communication (33) from what loos like WOW to PAC.

Unfortunately this changed the mains power charging to 5 Amp which cannot be changed, so I changed it back.

I also think that some parameters can only be changed when the AC in Breaker and AC out is switched Off.

Anybody know what the BMS communication must be on these units?

Hi All

Just a heads up: I just ordered the 10kW unit for R16999 from Builders, so stock seems to be available again.

I'm putting up a 8*4m cabin with a solar roof in our farm where a glamping tent stood - this will be the first purchase on that journey

Ian

5 hours ago, Ian said:

Hi All

Just a heads up: I just ordered the 10kW unit for R16999 from Builders, so stock seems to be available again.

I'm putting up a 8*4m cabin with a solar roof in our farm where a glamping tent stood - this will be the first purchase on that journey

Ian

You mean this one? for R16999

Isn't that just a battery? someone correct me if im wrong but I believe the 10KW below is just a battery and you still need an inverter if you buy this.

https://www.builders.co.za/Load-Shedding/Batteries/Power4less-Omnivolt-Wall-Mounted-Battery-10-KW/p/000000000000783276

5 hours ago, Henrdrik said:

So after playing around with the unit I managed to change the Bulk and Absorption Voltage to 56.8.

But I had to change the BMS Communication (33) from what loos like WOW to PAC.

Unfortunately this changed the mains power charging to 5 Amp which cannot be changed, so I changed it back.

I also think that some parameters can only be changed when the AC in Breaker and AC out is switched Off.

Anybody know what the BMS communication must be on these units?

I added my 5kw unit to Solar Assistant thanks to the SRNE discovery, the unit also says BMS protocol is WOW. Not sure if that is just default and must be changed, but changes to unit such as bulk and float etc are easy enough to change from Solar Assistant. Let me know if I can test something.

50 minutes ago, Zeebra said:

You mean this one? for R16999

Isn't that just a battery? someone correct me if im wrong but I believe the 10KW below is just a battery and you still need an inverter if you buy this.

https://www.builders.co.za/Load-Shedding/Batteries/Power4less-Omnivolt-Wall-Mounted-Battery-10-KW/p/000000000000783276

Quite possibly - I'm ok with that price for just the battery, but will have a look and return it if I'm not happy. The pictures all refer to the hybrid...

Edited March 25Mar 25 by Ian

Do you connect with solar assistant with direct wifi with the dongle provided?

4 hours ago, Ian said:

Quite possibly - I'm ok with that price for just the battery, but will have a look and return it if I'm not happy. The pictures all refer to the hybrid...

https://www.builders.co.za/Load-Shedding/Power-Solutions/Inverters-and-UPS/Power4Less-Omnivolt-G2-10-kW-Hybrid-Kit--Maximum-Power-Backup--10-2-kWh-Life-PO4-Battery--11-kW-Solar-Ready--Complete-Safety-Pack/p/000000000000782522

That's the all in one with inverter and battery, from what it seems

Edited March 25Mar 25 by abd7

10 hours ago, Henrdrik said:

Do you connect with solar assistant with direct wifi with the dongle provided?

I used my rpi 4, connected the USB A to B (printer cable) to the unit on the USB port. Attempted to get the BMS data into solar assistant too for better battery data with the RS485 cable but no luck on any of the comms settings.

Sorry for my ignorance, what is Rpi 4

10 minutes ago, Henrdrik said:

Sorry for my ignorance, what is Rpi 4

Raspberry Pi4

Hi everyone,

I’m working with an OmniVolt GII 3kW hybrid inverter (24V) and I’m struggling to get communication working.

I’ve tried:

• RS485 connection

• USB connection

But I’m getting no data at all (tested with Solar Assistant / serial tools).

Has anyone successfully:

• Connected to this inverter via RS485 or USB?

• What protocol / settings are required?

---

Also a second question:

The documentation doesn’t mention a minimum PV / solar voltage for the MPPT.

Does anyone know:

• What the minimum solar input voltage is for the 3kW unit?

• Or what voltage the MPPT actually starts tracking at?

---

Any help or working configs would be really appreciated

1 hour ago, Keagan.tomlinson said:

Hi everyone,

I’m working with an OmniVolt GII 3kW hybrid inverter (24V) and I’m struggling to get communication working.

I’ve tried:

• RS485 connection

• USB connection

But I’m getting no data at all (tested with Solar Assistant / serial tools).

Has anyone successfully:

• Connected to this inverter via RS485 or USB?

• What protocol / settings are required?

---

Also a second question:

The documentation doesn’t mention a minimum PV / solar voltage for the MPPT.

Does anyone know:

• What the minimum solar input voltage is for the 3kW unit?

• Or what voltage the MPPT actually starts tracking at?

---

Any help or working configs would be really appreciated

For solar assistant you can try this, Works on 5kw unit with usb printer cable, also make sure inverter powered on via bottom toggle.

@RoelofDeJager are you managing to pull in the load and grid information from the inverter with SA? That is the one thing that is driving me up the wall, and I have asked the techs to resolve this issue, with no luck.

I can only currently view PV and Battery data on the app (or using the IPower windows app connected by USB -B). I am not running SA (yet), but if you getting the load values, then I know my next step 😅

On 2026/02/10 at 8:19 AM, Bernard du Toit said:

I've came across this brand of inverter + battery combo by accident. Basically was looking for replacement 100Ah Lithium batteries. Long story short, these inverters (especially Power4Less Omnivolt G2 3 kW Hybrid Kit at R4,999.00 at Builders Warehouse) was cheaper than buying 2 x 105Ah Lithium batteries.

So I looked at the other options:

• Power4Less Omnivolt G2 3 kW Hybrid Kit @ R 4,999.00 (originally R 48,998.00)

• Power4Less Omnivolt G2 5 kW Hybrid Kit @ R 9,999.00 (originally R 68,998.00)

• Power4Less Omnivolt G2 8 KW Hybrid Kit @ R 14,999.00 (originally R 59,999.00)

• Power4Less Omnivolt G2 10 kW Hybrid Kit @ R 29,999.00 (originally R 69,999.00)

They are all priced under the cost of just the batteries they contain. All of them come with the exact same size LiFePO4 battery.

My biggest problem is that there is absolutely zero information about these units online. Not even the limited-built-by-a-marketing-team Power4Less website (https://pwr4less.com/), has any technical information on them.

But with the ability to buy a 8kW inverter, including a 8kWh LiFePO4 battery for R15k. I decided this seems like a good starting point to get involved in setting up Solar for my home based office and house. I've used the UPS (load shedding) trolley as a way to keep my office server running 24/7, and it is not the best at it, as it can only sustain about 2-4 hours with the current Lead Acid batteries. But with this unit, even if it is bad in many ways will keep the server up for much longer.

So the reason for posting this is to ask if anyone have tried the Power4Less units? (I also don't even know how long they have been available) Look at the original prices, I believe that there were many alternatives that you can go for with much more information on how they work and their abilities. I would not dump R60k on something that has so little information.

Also to their credit, they [were/are] sold as fully installed solutions. So when you paid the full price, that also included someone installing it at your house. This is probably why it was so expensive. It seems like with the lower price they have dropped the installation. But even still without the installation, they are currently cheaper than the LiFePO4 batteries that come with them.

So I've invested (I hope) in the 8kW option, and wanted to start a new thread where I can post the specs and experience I have with the unit once it has arrived and I can take decent photos and test/install the unit.

ANY UPDADATE ON THESE UNITS

2 hours ago, RowanB said:

@RoelofDeJager are you managing to pull in the load and grid information from the inverter with SA? That is the one thing that is driving me up the wall, and I have asked the techs to resolve this issue, with no luck.

I can only currently view PV and Battery data on the app (or using the IPower windows app connected by USB -B). I am not running SA (yet), but if you getting the load values, then I know my next step 😅

Please see example. Grid seems 100%, I unfortunately do not have load or PV connected yet. I will try and get a temp extension lead added for a test load this weekend and revert back.

Edited March 27Mar 27 by RoelofDeJager

Probably a silly question - and apologies if already answered - but - are these true hybrid?

I pulled the trigger this morning on the 8kw system for a possible upcoming build. Figured at the price, it's worth the risk.

On 2026/03/27 at 11:25 AM, RoelofDeJager said:

Please see example. Grid seems 100%, I unfortunately do not have load or PV connected yet. I will try and get a temp extension lead added for a test load this weekend and revert back.

Load does work @RowanB . This is a hairdryer in action.

Thanks @RoelofDeJager!

Guess I need to get SA, or I need to mess around with Modbus and try get these values. I wonder how the managed to break this on the ESS app 🙈

Hi Guys , I am still struggling with Error 64 coming up. Today it happened with Solar charging when the battery gets full. No Grid Coming in. Looks like it is Over Voltage on the busbar. Does anyone have a solution?

Will it maybe work if I set setting 60, Charging Cutoff SOC to a lower value, say 95%.

According to Grok, the BMS for these units must be set to PAC, can anyone confirm or deny it?

I noticed on the SMARTESS app that my battery voltage is 59.4V when fully charged. Surely it should not be getting that High. Why is that happening. I think somewehere we will need to update firmware or something.

Any comments are appreciated.

Edited March 30Mar 30 by Henrdrik

@Henrdrik I will send you my settings when I am done with work a bit later. I also recall I was getting faults when I had no grid connected, but these went away after I attached grid (although I was changing the settings at the same time).

4 hours ago, Henrdrik said:

I noticed on the SMARTESS app that my battery voltage is 59.4V when fully charged.

Confirm the voltage on die dc bus with a DMM the bms should not allow that voltage it equates to 3.7V/cell. Your absorption voltage should not exceed 58.4v hard limit( OVD) from bms even if the Mppt overshoots.

Edited March 30Mar 30 by TaliaB

7 hours ago, Henrdrik said:

Hi Guys , I am still struggling with Error 64 coming up. Today it happened with Solar charging when the battery gets full. No Grid Coming in. Looks like it is Over Voltage on the busbar. Does anyone have a solution?

Will it maybe work if I set setting 60, Charging Cutoff SOC to a lower value, say 95%.

According to Grok, the BMS for these units must be set to PAC, can anyone confirm or deny it?

I noticed on the SMARTESS app that my battery voltage is 59.4V when fully charged. Surely it should not be getting that High. Why is that happening. I think somewehere we will need to update firmware or something.

Any comments are appreciated.

The PAC protocol is supposed to be for the PaceBMS, which the GIi appears to have.

If you go to the Battery BMS panel ( left screen with 4 white buttons to the r/h of BMS display ) , is there a option under "Para Settings" > Comms where you can confirm/check that it is the same as what is set in the inverter?