brightk:
any contact pls

Unfortunately no.

luvlyoracle:
Anybody with cheap solar panels for sale in Warri
I need like 600w I have 150k

I have two PCs of 320w used Jinko panels for 150k.

If interested let's talk

SEOSpecialist:
Experts in the house, kindly proffer your advice concerning my inverter setup.

I have a 3.5kva SMK Inverter with two pieces of Cworth Energy 2.5kw Lithium 24V batteries (as seen below) and four 380w PV panels. On Wednesday afternoon, the inverter let out two loud sparks and started displaying error code 09 (this would be the second time within three months). A technician suggested that the inverter may not be compatible with the lithium batteries and suggested I replace it with a 3kva Felicity
brand.

Does anyone have an idea on which inverter brand will be most compatible with the batteries?

Thank you.

Did you sync the battery specs witht eh inverter battery charging settings?

Penuelseun:
What is your bulk absorption voltage set as, I think one of the battery cells reached a high voltage thereby triggering the high voltage disconnect which caused the bms to shut down the battery thus damaging the inverter. Solution is to reduce your absorption voltage.
On a second thought, what did your installer state as the cause?

Exactly my thoughts. Some installers are just careless, that's how a family member inverter got damaged because installed didn't adjust CC charging parameters. Battery went to 57+ volts.

Disco01:


The inverter doesn't support lithium charging profile but I'm ok charging with solar alone.

If the inverter battery charging settings has "user" option, you can tweak it for lithium use case. Just put your absorb at close to your full battery voltage. Turn off equalization or set to same absorb voltage.

saint2ace:


Alternative inverter brand will be based on your budget, so please share the amount you're comfortable spending on a new inverter first.

Secondly, get Ur installer to separate those battery cables, let the positive be on one battery and the negative on the other, this will aid even current draw between the 2 batteries connected in parallel, as it stands, battery 1 is taking all the hit and will charge and discharge faster, while battery 2 is in limbo.
If you have a high influx of current higher than the BMS capacity, then Ur battery BMS may clip the current to save Ur battery and that might be part of your problem.
Preferably, get a busbar, connect both batteries to the busbar independently with equal length cables, then connect to your inverter from the busbar, that would be the ideal approach and will aid balance out Ur batteries too.
Just my 2kobo.......

I think he is fine with the battery connection since they aren't Lead acid batteries.

SEOSpecialist:
Experts in the house, kindly proffer your advice concerning my inverter setup.

I have a 3.5kva SMK Inverter with two pieces of Cworth Energy 2.5kw Lithium 24V batteries (as seen below) and four 380w PV panels. On Wednesday afternoon, the inverter let out two loud sparks and started displaying error code 09 (this would be the second time within three months). A technician suggested that the inverter may not be compatible with the lithium batteries and suggested I replace it with a 3kva Felicity
brand.

Does anyone have an idea on which inverter brand will be most compatible with the batteries?

Thank you.

The installer is very very ignorant..

Smk inverter can and has been used with lithium battery.
Do you have solar panels attached to the inverter?.
Your installer likely didnt programme the inverter to work with lithium battery...hence the internal bms of the battery tripped off while the inverter was working, unexpectedly cutting off supply.

2nd the way he looped the 2 batteries is crude and improper, best to get a busbar and send each battery there...then the inverter will pick up from same busbar

Trippledots:


I think he is fine with the battery connection since they aren't Lead acid batteries.

This assumption is wrong, it works doesn't make it optimal, but that's a subject for another day. Cheers

HeavenlyBang:


There are plenty of great options available locally, not sure why you'd want to do that. Alibaba would be more expensive after shipping costs too.

Seems local is more expensive, I've been seeing prices for used inverters and it's outrageous. Now, how much will new cost?

AmakaRuby:


Seems local is more expensive, I've been seeing prices for used inverters and it's outrageous. Now, how much will new cost?

What is your budget and what inverter are you trying to buy?

I dey interested

Trippledots:


I have two PCs of 320w used Jinko panels for 150k.

If interested let's talk

Pls who has used welion hybrid inverter before, is it durable

..

walexsos:
Pls who has used welion hybrid inverter before, is it durable

Go for SRNE

walexsos:
Pls who has used welion hybrid inverter before, is it durable

12v 160ah 2kwh for 430k.
24v 160ah 4kwh for 855k.
48v 160ah 8kwh for 1.7m.
160ah and 130ah cells available for sale.

Trippledots:


If the inverter battery charging settings has "user" option, you can tweak it for lithium use case. Just put your absorb at close to your full battery voltage. Turn off equalization or set to same absorb voltage.

See the information and know if something can be done

Disco01:


See the information and know if something can be done

battery type 1 can be used

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.

This is available for 750k now. Kindly call me and feel free to ask questions you may have.

HeavenlyBang:


What is your budget and what inverter are you trying to buy?

250-300, 3.5kva to 5kva

> No, a breaker will not prevent this in-rush current.
> System usage sometimes determines if there would be a disconnect between Inverter and Battery. Someone might not disconnect the battery from the inverter but where the battery mostly discharges below shutdown voltage and inverter trips off, that system is most likely to experience in-rush current when it wakes up if charging source is applied.

When your BMS shuts off because of battery low voltage cut-off, when the battery wakes up there would be an in-rush current if the BMS is not equipped with this resistor.

> Always switch both Inverter and Battery Off when going away.

For DIYers: To retrofit an in-rush resistor into your batter, you would need a Relay Delay Timer or a manual transfer switch which will first contact sends power to the resistor and second contact sends power the to inverter.

For those using factory built batteries with proprietary BMS, pay attention to the moment you turn on your battery, you will hear a click, that is the Relay Delay Timer which operates the resistor. It will first send the power to the resistor for a preset number of seconds (usually 2secs) using the delay timer circuit, and after the 2 seconds, it transfers the power to the output terminal which goes to your inverter.
I have attached diagrams illustrating this process.

Drgreatone:

Apt as always. Thank you for helping some of us learn.
So bin reading about the 'in rush current' and said to occur when trying to connect the inverter to battery majorly. Also common with inverter equal/above 2000w. Wudnt a breaker btw both inverter and battery prevent such? Besides if one isnt planning to be connecting and disconnecting the battery/inverter, what now wud be the use of the resistor?
Then is it right to switch off the LiPO4 battery then inverter when going away as i read it cud also contribute to the 'in rush current' seeing as certain of the inverter capacitors responsible for start up may get drained/discharged while off? Or one sud just switch of the inverter and leave the battery on
Thank you for ur apt response in advance boss

See, a simple SPD will do this. That's the work of an SPD

jonescosmos:
> No, a breaker will not prevent this in-rush current.
> System usage sometimes determines if there would be a disconnect between Inverter and Battery. Someone might not disconnect the battery from the inverter but where the battery mostly discharges below shutdown voltage and inverter trips off, that system is most likely to experience in-rush current when it wakes up if charging source is applied.

When your BMS shuts off because of battery low voltage cut-off, when the battery wakes up there would be an in-rush current if the BMS is not equipped with this resistor.

> Always switch both Inverter and Battery Off when going away.

For DIYers: To retrofit an in-rush resistor into your batter, you would need a Relay Delay Timer or a manual transfer switch which will first contact sends power to the resistor and second contact sends power the to inverter.

For those using factory built batteries with proprietary BMS, pay attention to the moment you turn on your battery, you will hear a click, that is the Relay Delay Timer which operates the resistor. It will first send the power to the resistor for a preset number of seconds (usually 2secs) using the delay timer circuit, and after the 2 seconds, it transfers the power to the output terminal which goes to your inverter.
I have attached diagrams illustrating this process.

loluskysat:
See, a simple SPD will do this. That's the work of an SPD

You say!

Even with his detailed explanation?

When building LFP packs, there is a resistor attached to either Breaker or BMS to help cater for the Inverter In rush current, that we experience as a large Spark from inverter when connecting first time.

Chaii,

Please educate us on how to do this an SPD and what class of SPD we should use for this with respect to Battery Current.

We are here to learn !!!

loluskysat:
See, a simple SPD will do this. That's the work of an SPD

Penuelseun:
battery type 1 can be used

Really? It's either the first sealed battery I used before were using a wrong profile setting or it's uses the same charge setting with lithium?

How true is this statement please

"Lithium battery is crashing. Cells that cost $2200 for 14kWh is now close $900. This means you can have 8kWh lithium battery grade A for less 500k. That is the about 3 Tubular battery worth of lithium. Lithium prices crashing so fast naira inflation is struggling to keep up"

isangjohnson:
12v 160ah 2kwh for 430k.
24v 160ah 4kwh for 855k.
48v 160ah 8kwh for 1.7m.
160ah and 130ah cells available for sale.

2 questions

1. Are they power stations
2. Are they lipo4 batteries?

toyeoye:
How true is this statement please

"Lithium battery is crashing. Cells that cost $2200 for 14kWh is now close $900. "

True from China. Keyword Cells
Update: got clearer info from source. It's actually Complete pack, good times.

toyeoye:

This means you can have 8kWh lithium battery grade A for less 500k. That is the about 3 Tubular battery worth of lithium. Lithium prices crashing so fast naira inflation is struggling to keep up"

False - according to first paragraph, 8kwh Cells is 515USD. press your calculator with 1600Naira to 1 USD.

Debroslink:

2 questions

1. Are they power stations
2. Are they lipo4 batteries?

1. They are Lifepo4 Battery packs with inbuilt BMS, it operates only as an energy storage system, works with Inverters, or battery powered device.
it's just a battery! You need an Inverter and charger to use it.

jonescosmos:
> No, a breaker will not prevent this in-rush current.
> System usage sometimes determines if there would be a disconnect between Inverter and Battery. Someone might not disconnect the battery from the inverter but where the battery mostly discharges below shutdown voltage and inverter trips off, that system is most likely to experience in-rush current when it wakes up if charging source is applied.

When your BMS shuts off because of battery low voltage cut-off, when the battery wakes up there would be an in-rush current if the BMS is not equipped with this resistor.

> Always switch both Inverter and Battery Off when going away.

For DIYers: To retrofit an in-rush resistor into your batter, you would need a Relay Delay Timer or a manual transfer switch which will first contact sends power to the resistor and second contact sends power the to inverter.

For those using factory built batteries with proprietary BMS, pay attention to the moment you turn on your battery, you will hear a click, that is the Relay Delay Timer which operates the resistor. It will first send the power to the resistor for a preset number of seconds (usually 2secs) using the delay timer circuit, and after the 2 seconds, it transfers the power to the output terminal which goes to your inverter.
I have attached diagrams illustrating this process.

Thanks for the detailed explanation sir. I no mind make u dey mentor me sir as ur depth of knowledge is one I'd love to tap just the surface from 😁😁😁

So why do you still have a spark when you connect your inverter to the battery?

There is a difference between in-rush current and surge current.

Dam5reey1:


You say!

Even with his detailed explanation?

When building LFP packs, there is a resistor attached to either Breaker or BMS to help cater for the Inverter In rush current, that we experience as a large Spark from inverter when connecting first time.

The role of the SPD amongst others is to divert the excess current back to the source or send it to the earth.

jonescosmos:
Chaii,

Please educate us on how to do this an SPD and what class of SPD we should use for this with respect to Battery Current.

We are here to learn !!!