Syber:
Selling my Gennex 5KVA inverter after my recent upgrade.

Works like a champ

250k giveaway

Interested let me know you can pickup at my Office

No 53,Iyun Road, Stadium hotel bustop western avenue Surulere

Call me 08123871212

What is the model

zeestone99:

If that's the case you have to invest in proper earthing and thunder arestor equipment

Is there anything else from the thunder arrestor equipment that I still need to get?

GloriousGbola:


Unless your earthing is done but professionals it will not be tested so you have no idea how reliable it is. People have had instances where lighting current goes to ground encounters resistance and then goes back into your home electrical installation. So it is preferable to put your lighting arrester seperate. Also note that unless your house is actually the tallest in the area, you may never have a lightning strike

I also advise that you install the arrester not on your building but in your detached overhead water tank gantry. That way you don't have to worry about surge currents induced by lighting current.

20 houses in all directions to where I stay, the house I live in is still the tallest…Maybe moving out is the best way to solve the problem.

walexsos:


What is the model

All u need

Syber:
Selling my Gennex Axpert MKS Hybrid 5KVA/48V inverter after my recent upgrade.

Works like a champ

250k giveaway

Interested let me know you can pickup at my Office

No 53,Iyun Road, Stadium hotel bustop western avenue Surulere

Call me 08123871212

how long usage? has it had any fault or repairs before? Are you same @dapsyra? he placed same inverter for sale over 2 years ago

Update

Hello chief, gone there yesterday and did few of the things listed here... (Equalizer also changed the battery settings to flood on the inverter) .. Also went with felicity 60a cc sadly that one doesn't accept more than 145v but was still able to use it to charge cause of the poor weather although when the sun intensity increases, it started blinking the warning red light. Anyways that not where am going... what I noticed myself is that, the battery doesn't take more than 10mins before it runs from full charge to completely discharge which is from 25.+v to 21.8v. and also takes abt same mins (10mins) before it get full even to bulk and float level. Let me also call una attention to this, initially when i did the installation, they had two 100ah battery which i connected to it, after abt few days the batteries became so weak and dead. I was like maybe because they've been using those for going to 2yrs maybe that was why, then we got another one.. Brand new ones this time around two tubular batteries 12v 220ah then this issues again which am just so so confused ... I also noticed the battery will start decreasing just like a clock count down.. It doesn't back up at all ones the PV is been cut off.. Same thing the previous two 100ah did.. what is the way forward, what kind of solution can I use to tackle this problem pls.. Will be in the comment section... Thanks all..

earthrealm:


ok panels check out, WELION inverter, you need to put it on flooded battery setting, not default or choose user and set bulk to 14.7v and float to 13.8v........and activate equalization immediately and set monthly equalization too for 4hrs at 31v.

am assuming the batterys are brand new, so electrolyte SG is correct, just that its not being charged and mixing well cos of the low/wrong voltage. higher/correct charge voltage and the periodic equalization shud sort you out real quick..

your leaving the inverter on default is the likely cause of this issue, and most average installers are guilty of this as well.
also the pump load is a bit high, but if you run it only during the day, with solar panels kicking in juice, you shud be fine

Ooreofegrace:
Update

Hello chief, gone there yesterday and did few of the things listed here... (Equalizer also changed the battery settings to flood on the inverter) .. Also went with felicity 60a cc sadly that one doesn't accept more than 145v but was still able to use it to charge cause of the poor weather although when the sun intensity increases, it started blinking the warning red light. Anyways that not where am going... what I noticed myself is that, the battery doesn't take more than 10mins before it runs from full charge to completely discharge which is from 25.+v to 21.8v. and also takes abt same mins (10mins) before it get full even to bulk and float level. Let me also call una attention to this, initially when i did the installation, they had two 100ah battery which i connected to it, after abt few days the batteries became so weak and dead. I was like maybe because they've been using those for going to 2yrs maybe that was why, then we got another one.. Brand new ones this time around two tubular batteries 12v 220ah then this issues again which am just so so confused ... I also noticed the battery will start decreasing just like a clock count down.. It doesn't back up at all ones the PV is been cut off.. Same thing the previous two 100ah did.. what is the way forward, what kind of solution can I use to tackle this problem pls.. Will be in the comment section... Thanks all..

Their usage pattern is the cause they are deep discharging the battery.

11.99V and 10.99V is a sign of bad batteries.

Get them a minimum 5kwh LFP pack and have peace!

Actually, I don't think they are because i monitored it my self.. And according to the low and high volt I wrote above, that exactly what in the manual book as well... Was kind of expecting bulk charge at 29v or 28.+ but on the inverter and manual as well it is written 27v and 21.8 as low.. Reason why I said they don't use pass what is explained is, this ppl na my inlaw, Dr follow instructions like say his life depends on it... If you tell him not to on it all day self, he won't ask why since it your field, he will off it that him for you.. Now back to the problem, do you think the inverter could be affecting the batteries? Could it be that pumping machine affecting them..? Kindly not, the pump was only tested on the previous battery not run on them and them just went bad before this new ones.. Now this again..

My setup once again make una help me use Oju a gba wo abeg..(experience eye look am)
585w brand new jinko PV all connected in series x3
Welion 4.2kw hybrid invert with 120a cc
Then two 220ah tubular batteries.

Load.. Pumping machine 1HP
Inverter fridge/freezer.. At high 280w and when it start running it comes down to 80w at low.
Tv 32"led which is around 35w or there abt
Decoder.. Around 15w
Then DC bulb 5w btw 5 and 10pecs sah not sure..

Kindly note pump is used only when the intensity of the sun is high and na like 3 or 4 days interval. (they once share with me the clip when they on the pump, the PV took it up.. And the battery never left the bulk state. Pump was taking around 700w+ and the PV was bring down 900w+ and once the water is full and turned off the PV will come down to just 100w above what ever it is been drown from the inverter. It doesn't event touch the battery at all..

Tv.. This only comes up during the weekend..

Refrigerator is the only appliance that run on it from 8am to 5pm now i tell them to off by 3 since this issue came up.. Kindly note that even as at that 5pm they off it, the battery stage doesn't leave bulk state always full...

With all the listed above, what the way forward.. Contacted the battery seller alaye turned me for one side.. And this Instllation was done in May last mth..


Kindly note... I Hv customers that they run two 12v 220ah tubular with 24v system on pump for year with no issue.. So i don't belive that the issue pls.. One even use it along with his old fridge in his drug store.. But i always advise them to do so hen the sun is high.


Make una help me with solutions pls.. Should i take batteries to professional battery chargers for check up? What could be the cause of all this.. Pls i need solution bosses abeg 🙏 🙏 🙏 keep on seeing messages and WhatsApp calls from him asking for way forward always cut my mind 😔 😔 will be in the comment section. Thanks all.. One love

Dam5reey1:

Their usage pattern is the cause they are deep discharging the battery.

11.99V and 10.99V is a sign of bad batteries.

Na price they kuku make man give customer tubular quotation. Once they see the price like this, them they always choose tubular.. Na to they make them see the benefit of lifepo4 now ooo i go they do abeg.. Happy customer na happy me oo wallahi.. This back and forth done drain me.. 😔

Dam5reey1:

Their usage pattern is the cause they are deep discharging the battery.

11.99V and 10.99V is a sign of bad batteries.

Get them a minimum 5kwh LFP pack and have peace!

Ooreofegrace:
Actually, I don't think they are because i monitored it my self.. And according to the low and high volt I wrote above, that exactly what in the manual book as well... Was kind of expecting bulk charge at 29v or 28.+ but on the inverter and manual as well it is written 27v and 21.8 as low.. Reason why I said they don't use pass what is explained is, this ppl na my inlaw, Dr follow instructions like say his life depends on it... If you tell him not to on it all day self, he won't ask why since it your field, he will off it that him for you.. Now back to the problem, do you think the inverter could be affecting the batteries? Could it be that pumping machine affecting them..? Kindly not, the pump was only tested on the previous battery not run on them and them just went bad before this new ones.. Now this again..

My setup once again make una help me use Oju a gba wo abeg..(experience eye look am)
585w brand new jinko PV all connected in series x3
Welion 4.2kw hybrid invert with 120a cc
Then two 220ah tubular batteries.

Load.. Pumping machine 1HP
Inverter fridge/freezer.. At high 280w and when it start running it comes down to 80w at low.
Tv 32"led which is around 35w or there abt
Decoder.. Around 15w
Then DC bulb 5w btw 5 and 10pecs sah not sure..

Kindly note pump is used only when the intensity of the sun is high and na like 3 or 4 days interval. (they once share with me the clip when they on the pump, the PV took it up.. And the battery never left the bulk state. Pump was taking around 700w+ and the PV was bring down 900w+ and once the water is full and turned off the PV will come down to just 100w above what ever it is been drown from the inverter. It doesn't event touch the battery at all..

Tv.. This only comes up during the weekend..

Refrigerator is the only appliance that run on it from 8am to 5pm now i tell them to off by 3 since this issue came up.. Kindly note that even as at that 5pm they off it, the battery stage doesn't leave bulk state always full...

With all the listed above, what the way forward.. Contacted the battery seller alaye turned me for one side.. And this Instllation was done in May last mth..


Kindly note... I Hv customers that they run two 12v 220ah tubular with 24v system on pump for year with no issue.. So i don't belive that the issue pls.. One even use it along with his old fridge in his drug store.. But i always advise them to do so hen the sun is high.


Make una help me with solutions pls.. Should i take batteries to professional battery chargers for check up? What could be the cause of all this.. Pls i need solution bosses abeg 🙏 🙏 🙏 keep on seeing messages and WhatsApp calls from him asking for way forward always cut my mind 😔 😔 will be in the comment section. Thanks all.. One love

Eeyah, sorry for the stress bro. Had same issue in 2020 when I newly got introduced to the world of renewable energy. My batteries Couldn't hold charge for long, will run down very fast, and they are all new. I Called the installer,but he couldn't profer a solution. Luckily I discovered this forum.
To cut the story short, my Bluegate inverter was the culprit. Couldn't charge my batteries as per manufacturers prescribed setting. To recover the batteries, Had to trickle charge the batteries for days(I used less than 5amps, mostly 1amp charging) without using them. And eventually, they recovered. Tubular batteries, especially those that have been in the sellers shelf for a long time before being sold requires equalization or desulfation before use. The internal resistance would have increased Overtime and won't be able to accept charge as it should.
My batteries are now in it's fifth year running strong.

Trickle charge them with the Charging voltage set to around 30v. Lets hope they recover. If they are new, they should recover.
I am not an Authority in this, am only speaking based on my experience

I have 3 units the White Hybrid LV Models working since 2019, I have 6 units of HV Hybrid Models personally owned Since 2022, I have installed more than 50 units of the HV Hybrid Models for clients.

I had issue with one of the HV 3KW which works without Battery but once you connect battery, it shuts down on Error 23.

Then, months into these installations, more than 5 units of the Inverter started to have power switch ON issues, I noticed that if you eventually switch off the Inverter at some point you can't get it to come back on.

Upon investigation, I realized that the Power Switch sucks in dust and it blinds the contacts inside the switch preventing SWITCH ON Operation. Opening the switch and cleaning it up and reassembling it didn't help much.

So I ordered 20Pcs of the Power Switch and have been replacing the buttons as they get bad, I would usually mask the switch with transparent masking tape to prevent air flowing through it.

WHY DOES THE INVERTER SUCK AIR VIS THE SWITCH

**** I DISCOVERED THAT ALL THE UNITS THAT HAD THIS ISSUE HAD CLOGGED AIR FILTERS ****

>>>> CLEAN YOUR AIR FILTERS REGULARLY TO PREVENT THE INVERTER FROM LOOKING FOR ALTERNATIVE MEANS TO BREATHE SINCE YOU CAN'T TELL THE COOLING FANS WHAT TO DO. <<<<

I have never had any Electrically or Electronically Related faults with all the units.

Please note that newer production of these IVEM series now has a pop-out fuse on the left hand side of the inverter. Also note that the IVEM 3KW, 5KW and 8KW now comes in a white case and the power button has been relocated.

swagifted:
people using the felicity 5kw hybrid inverter......any of you have any one that have lasted 2 years and counting with zero issues?

Just a few questions for you:

1. Did you verify that the Copper Rod is real and not coated?
2. What is the Diameter of the Copper Rod?
3. What is the Dimension and thickness of the Copper Mat?
4. How many bars do you have in your Mat?
5, I did not see clamps on your list, how do you intend to link your Earth Cable to your rod?
6. How do you intend to install your arrestor and earth? Same Hole, same Coppers linked to both arrestor and earth bar?
7, Why did you buy so much salt? Where is your Charcoal & Bentonite?
8. How deep do you intend to dig for your earthing?
etc

One thing is to have the funds to buy these items, another thing is to do a good installation or do a haphazard installation. But in all these, the choice is entirely yours.

RickyM:

Is there anything else from the thunder arrestor equipment that I still need to get?

Thanks alot boss...

Can than this be achieved with the cc in the inverter or i should get external trickle charger.?

Also attached is what is on the equalizer.. The batteries are never balanced.

.

Peterlove11:

Eeyah, sorry for the stress bro. Had same issue in 2020 when I newly got introduced to the world of renewable energy. My batteries Couldn't hold charge for long, will run down very fast, and they are all new. I Called the installer,but he couldn't profer a solution. Luckily I discovered this forum.
To cut the story short, my Bluegate inverter was the culprit. Couldn't charge my batteries as per manufacturers prescribed setting. To recover the batteries, Had to trickle charge the batteries for days(I used less than 5amps, mostly 1amp charging) without using them. And eventually, they recovered. Tubular batteries, especially those that have been in the sellers shelf for a long time before being sold requires equalization or desulfation before use. The internal resistance would have increased Overtime and won't be able to accept charge as it should.
My batteries are now in it's fifth year running strong.

Trickle charge them with the Charging voltage set to around 30v. Lets hope they recover. If they are new, they should recover.
I am not an Authority in this, am only speaking based on my experience

Sapiosexuality:
Please, is this odour an inverter produces when it sound increases normal? What is responsible for the smell? It only happens once the sound increases suggesting, to me, a heating problem. I've been perceiving the smell from day 1. It comes out from the fan area of the inverter.

Update. It seems the smell is from the DC breaker (as I just tested by putting my nose close to it. Product is Schneider I'm been told of Schint).

Like how much is this power button switch.....? And it seeems the HV hybrid have more case study to trust with, currently the person that needs it does not even want to do AC, maybe maximum single load will be a 1 hp borehole machine, that he will rarely use... If not his current maximum load is 750 watts. Please can you help with the exact picture, it will save me lot....is this the 2019 own or the 2022 own you are talking about

jonescosmos:
I have 3 units the White Hybrid LV Models working since 2019, I have personally 6 units of HV Hybrid Models Since 2022, I have installed more than 50 units of the HV Hybrid Models for clients.

I had issue with one of the HV 3KW which works without Battery but once you connect battery, it shuts down on Error 23.

Then, months into these installations, more than 5 units of the Inverter started to have power button switch on issues, I noticed that if you eventually switch off the Inverter at some point you can't get it to come back on.

Upon investigation, I realized that the Power Switch sucks in dust and it blinds the contacts inside the switch preventing SWITCH ON Operation. Opening the switch and cleaning it up and reassemble it didn't help much.

So I ordered 20Pcs of the Power Switch and have been replacing the buttons as they get bad, I would usually mask the switch with transparent masking tape to prevent air flow through it.

WHY DOES THE INVERTER SUCK AIR VIS THE SWITCH

**** I DISCOVERED THAT ALL THE UNITS THAT HAD THIS ISSUE HAD CLOGGED AIR FILTERS ****

>>>> CLEAN YOUR AIR FILTERS REGULARLY TO PREVENT THE INVERTER FROM LOOKING FOR ALTERNATIVE MEANS TO BREATHE SINCE YOU CAN'T TELL THE COOLING FANS WHAT TO DO. <<<<

I have never had any Electrically or Electronically Related faults with all the units.

Please note that newer production of these IVEM series now has a pop-out fuse on the left hand side of the inverter. Also note that the IVEM 3KW, 5KW and 8KW now comes in a white case and the power button has been relocated.

This is IVCM (Production ended in 2019)

swagifted:
Like how much is this power button switch.....? And it seeems the HV hybrid have more case study to trust with, currently the person that needs it does not even want to do AC, maybe maximum single load will be a 1 hp borehole machine, that he will rarely use... If not his current maximum load is 750 watts. Please can you help with the exact picture, it will save me lot....is this the 2019 own or the 2022 own you are talking about

This is IVEM (Old Casing production ended January 2024)

swagifted:
Like how much is this power button switch.....? And it seeems the HV hybrid have more case study to trust with, currently the person that needs it does not even want to do AC, maybe maximum single load will be a 1 hp borehole machine, that he will rarely use... If not his current maximum load is 750 watts. Please can you help with the exact picture, it will save me lot....is this the 2019 own or the 2022 own you are talking about

This is IVEM (New Casing, Currently in production)
Picture 1: 3KW / 5KW
Picture 2: 8KW With Built-in Wi-Fi Module

swagifted:
Like how much is this power button switch.....? And it seeems the HV hybrid have more case study to trust with, currently the person that needs it does not even want to do AC, maybe maximum single load will be a 1 hp borehole machine, that he will rarely use... If not his current maximum load is 750 watts. Please can you help with the exact picture, it will save me lot....is this the 2019 own or the 2022 own you are talking about

has anyone don rooft top pv fabrication structures here.. how did u ago abt it.. factory products are very costly

Ooreofegrace:
Actually, I don't think they are because i monitored it my self.. And according to the low and high volt I wrote above, that exactly what in the manual book as well... Was kind of expecting bulk charge at 29v or 28.+ but on the inverter and manual as well it is written 27v and 21.8 as low.. Reason why I said they don't use pass what is explained is, this ppl na my inlaw, Dr follow instructions like say his life depends on it... If you tell him not to on it all day self, he won't ask why since it your field, he will off it that him for you.. Now back to the problem, do you think the inverter could be affecting the batteries? Could it be that pumping machine affecting them..? Kindly not, the pump was only tested on the previous battery not run on them and them just went bad before this new ones.. Now this again..

My setup once again make una help me use Oju a gba wo abeg..(experience eye look am)
585w brand new jinko PV all connected in series x3
Welion 4.2kw hybrid invert with 120a cc
Then two 220ah tubular batteries.

Load.. Pumping machine 1HP
Inverter fridge/freezer.. At high 280w and when it start running it comes down to 80w at low.
Tv 32"led which is around 35w or there abt
Decoder.. Around 15w
Then DC bulb 5w btw 5 and 10pecs sah not sure..

Kindly note pump is used only when the intensity of the sun is high and na like 3 or 4 days interval. (they once share with me the clip when they on the pump, the PV took it up.. And the battery never left the bulk state. Pump was taking around 700w+ and the PV was bring down 900w+ and once the water is full and turned off the PV will come down to just 100w above what ever it is been drown from the inverter. It doesn't event touch the battery at all..

Tv.. This only comes up during the weekend..

Refrigerator is the only appliance that run on it from 8am to 5pm now i tell them to off by 3 since this issue came up.. Kindly note that even as at that 5pm they off it, the battery stage doesn't leave bulk state always full...

With all the listed above, what the way forward.. Contacted the battery seller alaye turned me for one side.. And this Instllation was done in May last mth..


Kindly note... I Hv customers that they run two 12v 220ah tubular with 24v system on pump for year with no issue.. So i don't belive that the issue pls.. One even use it along with his old fridge in his drug store.. But i always advise them to do so hen the sun is high.


Make una help me with solutions pls.. Should i take batteries to professional battery chargers for check up? What could be the cause of all this.. Pls i need solution bosses abeg 🙏 🙏 🙏 keep on seeing messages and WhatsApp calls from him asking for way forward always cut my mind 😔 😔 will be in the comment section. Thanks all.. One love

In as much as I detest tubular batteries here is a personal advice.

As told by someone above get an external ac charger to charge each batteries full at lower amp in order to desulphate each.

Tubular battery is by luck. Probably you bought brand new ones that had been in stock for too long and sulphation had set in already. Desulphate and enjoy. The charging profile of tubular is annoying.

AVOID TUBULARS AT ALL COST.
Good batteries go beyond size.
Get ordinary 100a LifePO4 and experience peace of mind biko.Look beyond the miserable deceitful 220a on it. All installers will continue to have problems if they were still stuck with tubulars. Replacing batteries after 2years sef is bad on its own.

A friend of mine had all 4 tubulars bad after just 2yrs. Just imagine! My ordinary 100a 12v system is far efficient than theirs big time with my total load higher than theirs. While they are planning to replace theirs, I just got started!!! Life is too sweet with LifePO4.

I would had rather extract laptop lithium ion batteries than the best tubulars with pampering of 50% DOD.

Are you in Lagos?

brightk:
has anyone don rooft top pv fabrication structures here.. how did u ago abt it.. factory products are very costly

I emailed you from a at yandex dot com email address

Thanks for the advice boss... Planning on doing that too soon... Will hv to take them down to a correct charger cause the charger i hv with me are much higher...

And no.. I base in Ibadan

Thanks once again chief

dollarnaira:


In as much as I detest tubular batteries here is a personal advice.

As told by someone above get an external ac charger to charge each batteries full at lower amp in order to desulphate each.

Tubular battery is by luck. Probably you bought brand new ones that had been in stock for too long and sulphation had set in already. Desulphate and enjoy. The charging profile of tubular is annoying.

AVOID TUBULARS AT ALL COST.
Good batteries go beyond size.
Get ordinary 100a LifePO4 and experience peace of mind biko.Look beyond the miserable deceitful 220a on it. All installers will continue to have problems if they were still stuck with tubulars. Replacing batteries after 2years sef is bad on its own.

A friend of mine had all 4 tubulars bad after just 2yrs. Just imagine! My ordinary 100a 12v system is far efficient than theirs big time with my total load higher than theirs. While they are planning to replace theirs, I just got started!!! Life is too sweet with LifePO4.

I would had rather extract laptop lithium ion batteries than the best tubulars with pampering of 50% DOD.

Are you in Lagos?

and this is the one where you have installed over 50 units right?...cause i'v seen many vendors quoting under 600k...very tempting.

jonescosmos:
This is IVEM (Old Casing production ended January 2024)

July price slash on all our lifepo4 lithuim battery packs! we assemble REAL CAPACITY Lifepo4 lithium batteries with brand new cells and smart BMS at unbeatable prices. 3yrs warranty! battery lifespan over 10 to 15yrs.
12v 100ah 1280kwh @ 300k
12v 172ah 2.2kw @ 480k
12v 280ah 3,584kwh @690k
12v 200ah 2560kwh @ 590k
24v 100ah 2560kwh @600k
24v 200ah 5120kwh @1.1m
24v 172ah 4.4kwh @900k
24v 280ah 7168kwh @1.4m
24v 344ah 8806kwh @1.7m
48v 100ah 5120kwh @1.1m
48v 172ah 8806kwh @1.7m
48v 200ah 10240kwh @2.1m
48v 280ah 14336kwh @2.650m
note:prices dependant on type of accessories used.
whatsapp 08020574628 or telegram@vvalto

Daniel2802:
Hello everyone. I have this SRNE HYP4850S100-H inverter for sale at 888k (slightly negotiable). It hasn't left the carton since I bought it. It's a 48V 5kva inverter.

Why do I want to sell it: I wasn't aware of the HESP lineup before I purchased the HYP model. The HESP comes with dual MPPT, so I want to get that, so I can have more PV production. So I want to get the HESP4860S100-H (6kva 48v).

I haven't used it yet because I have a 24v setup and I have been waiting for batteries I ordered from China to arrive, before I can upgrade to the 48v system.

It comes with two months warranty.

Location is Port Harcourt, but I can waybill to anywhere.

WhatsApp/Call: 081-6157-6719
Specsheet attached.

Still Available.

FEGEITOK:


I emailed you from a at yandex dot com email address

I don reply ur mail

Hello Guys,
I just installed a 6kva inverter system. The inverter brand is Gospower (6kva) while the battery brand is Marstek (5120Wh). This combination was recommended to me by someone. It's been up to 3 weeks since I installed this system and I am not yet impressed. The first issue I have observed is that I hardly get up to half of the total power output of the solar panels (10 x 330W). I understand it's cloudy but the few times the sun has shone bright, the maximum output is usually around 400-500W.

Second issue: I observed an anomaly yesterday when power went off. I observed that the voltage on the inverter panel dropped drastically to 48V from like 54-55V upon disconnecting from the power grid. This was shocking to me. Then shortly after that like 5 mins, the voltage dropped further to 47V which triggered the inverter to shut down. I had set a low DC voltage of 47V. My load consumption is very small - ranges from 200W to 400W. 400W during the day when the industrial fan is on. All other appliances are basic.

My next course of action was reaching out to someone to come do an independent troubleshooting and inspection as I can't tell where the fault is coming from: inverter, battery or the installation. Secondly, I contacted the battery manufacturer to complain about the issue and they promised to send a technician over.

I'm still in shock as regards what might have caused this issue.

First Pic was taken shortly after power went off showing the drastic drop in voltage.
Second pick was taken upon restoration of power in about 10 mins when it first went off. As you can see, the battery charge status shows a fully charged battery and voltage rose back to somewhere between the float and bulk voltage.

Nutridelfarms:
Hello Guys,
I just installed a 6kva inverter system. The inverter brand is Gospower (6kva) while the battery brand is Marstek (5120Wh). This combination was recommended to me by someone. It's been up to 3 weeks since I installed this system and I am not yet impressed. The first issue I have observed is that I hardly get up to half of the total power output of the solar panels (10 x 330W). I understand it's cloudy but the few times the sun has shone bright, the maximum output is usually around 400-500W.

What was battery percentage at the time? How much load did you have on?

Next time when you have full sun, put on some heavy equipment (microwave, heater, etc) and see how much power your panels pull in.

HeavenlyBang:


What was battery percentage at the time? How much load did you have on?

Next time when you have full sun, put on some heavy equipment (microwave, heater, etc) and see how much power your panels pull in.

The load fluctuates between 336 - 400W

Nutridelfarms:
Hello Guys,
I just installed a 6kva inverter system. The inverter brand is Gospower (6kva) while the battery brand is Marstek (5120Wh). This combination was recommended to me by someone. It's been up to 3 weeks since I installed this system and I am not yet impressed. The first issue I have observed is that I hardly get up to half of the total power output of the solar panels (10 x 330W). I understand it's cloudy but the few times the sun has shone bright, the maximum output is usually around 400-500W.

Second issue: I observed an anomaly yesterday when power went off. I observed that the voltage on the inverter panel dropped drastically to 48V from like 54-55V upon disconnecting from the power grid. This was shocking to me. Then shortly after that like 5 mins, the voltage dropped further to 47V which triggered the inverter to shut down. I had set a low DC voltage of 47V. My load consumption is very small - ranges from 200W to 400W. 400W during the day when the industrial fan is on. All other appliances are basic.

My next course of action was reaching out to someone to come do an independent troubleshooting and inspection as I can't tell where the fault is coming from: inverter, battery or the installation. Secondly, I contacted the battery manufacturer to complain about the issue and they promised to send a technician over.

I'm still in shock as regards what might have caused this issue.

First Pic was taken shortly after power went off showing the drastic drop in voltage.
Second pick was taken upon restoration of power in about 10 mins when it first went off. As you can see, the battery charge status shows a fully charged battery and voltage rose back to somewhere between the float and bulk voltage.

How was the Panel connected?
Panel Brand and specs?
Do the Batteries have Monitoring showing SOC, Voltage?
and did you Install it by yourself?

Dam5reey:


How was the Panel connected?
Panel Brand and specs?
Do the Batteries have Monitoring showing SOC, Voltage?
and did you Install it by yourself?

1. Honestly I have no idea.
2. Sunshine solar panel
3. The battery has 6 LED lights to indicate SOC (see picture) according to the manual but since I got it, all the lights have stayed on even when I'm using the battery to power the load. all the lights just stay on which is quite weird. I suspect that probably because the BMS has not been configured, so the lights are not able to show the state of charge correctly. So I have been relying on the inverter panel to read the battery voltage.
4. I used an installer.

Nutridelfarms:


1. Honestly I have no idea.
2. Sunshine solar panel
3. The battery has 6 LED lights to indicate SOC (see picture) according to the manual but since I got it, all the lights have stayed on even when I'm using the battery to power the load. all the lights just stay on which is quite weird. I suspect that probably because the BMS has not been configured, so the lights are not able to show the state of charge correctly. So I have been relying on the inverter panel to read the battery voltage.
4. I used an installer.

3. this means you need to start from the batteries, as Marstek promised to send down a technician, then wait for them.

4. Also contact the installer to explain how the panel was configured.