deking:
Good evening sir.
For how long do you intend to power those and how many hours of power do you typically get in your neighborhood. These are important inputs required for adequate sizing unless you want to go the way of budget.

Good evening boss..We use to have like 10hours light average daily but one thing is once their is issue with the transformer we may go like 3days without light.

https://qz.com/2130711/electric-vehicles-make-it-harder-to-quell-fire-on-felicity-ace-cargo-ship/?utm_source=YPL

Lithium-ion batteries are fueling the fire on a burning cargo ship full of Porsches

The cargo ship Felicity Ace is aflame from bow to stern with a lithium-ion battery fire that can’t be put out with water alone.

The fire has been burning since Wednesday (Feb. 16), as the ship drifts in the Atlantic about 200 miles southwest of Portugal’s Azores Islands. Its 22-person crew abandoned ship and was rescued on Thursday.

The ship left Germany on Feb. 10 and headed for the US with about 4,000 Porsches, Bentleys and other luxury cars aboard, and some of those were electric vehicles. It’s not clear if the batteries contributed to the fire starting in the first place—a greasy rag in a lubricant-slicked engine room or a fuel leak are the usual suspects in ship fires—but the batteries are keeping the flames going now. A forensic investigation will take months to determine the cause.

On Saturday, João Mendes Cabeças, captain of the port of Faial, the nearest Azorean island, told Reuters that the batteries in the ship’s cargo are “keeping the fire alive.” Cabeças added that reinforcements with specialist equipment to extinguish the fire were on their way. At the time of the interview, the fire hadn’t reached the ship’s fuel tank, but was closing in.

Large quantities of dry chemicals are needed to smother lithium ion battery fires, which burn hotter and release noxious gases in the process.

Pouring water onto the Felicity Ace wouldn’t put out a lithium-ion battery fire, Cabeças told Reuters, and the added water weight could make the ship more unstable.

Lithium-ion batteries pose a special fire risk
Electric vehicle fires are rare, but pose their own kind of flammability risk, and one that becomes heightened as EVs go mainstream. Large numbers of EVs grouped together, as when they are transported by cargo ship, or electric buses parked in an overnight lot, raise the risk that one flaming battery could ignite a chain reaction in adjacent batteries. According to a research proposal at the National Academy of Sciences’ Transportation Research Board, “Lithium-ion battery fire risks are currently undermanaged in transit operations.”

There have been more than 35 large lithium-ion battery fires since 2018, Paul Christensen, an expert in lithium fires, told the Financial Times, including a 13-ton Tesla megapack storage battery in Victoria Australia that burned for three days. An electric ferry in Norway caught fire in 2019, and in April 2021, a battery fire at a Beijing mall killed two firefighters.

In addition, car-carrying ships and ferries can face higher risks from fires, according to insurer Allianz Global’s head of marine risk. Due to the internal areas not being divided to make it easier to transport cars, when a fire starts it can spread more easily.

One day, One trouble.

Best to spec with the usual and when the unusual happens you ration the use of your battery.

Your can reach me on o 7 o 6 double four double five 9 43 if you want me to assist.

My guess is you want a budget package.

hooryo:

Good evening boss..We use to have like 10hours light average daily but one thing is once their is issue with the transformer we may go like 3days without light.

odimbannamdi:
Hello guys,

Please I am interested in joining the Lithium cells group purchase. Please add me on 09083748635.

Thanks

I would like to join the group too. 08082698875

As a contribution to the ongoing solar panel energy production debate, which many with monitoring system can attest to is.

For us a rule of thumb,

1. Tier 2 panels are calculated with 0.55% of nameplate or total PV capacity for period of 4 Hours.

2. Tier 1 panels are calculated with 0.65% of nameplate pr total PV capacity for period of 4 Hours


If the system is loaded I.e. energy storage and loads then it is expected to see energy production in line with above.

This proven true by remote monitoring.

Conditions based on a normal sunny day

A quick insight to your project

To lay it bare, your appliances are not efficient even if you try to manage it, they won't help at the long run & a quote will look bogus for these little setup

Proffered solutions, if possible when choosing to go solar

1. If a 12V TV with adapter can be used ... It will be a great alternative

2. Forget the fridge use it only with Grid supply

3. Use only TV speaker, forget the speaker too

4. Don't have idea of the bulbs but since it is a room, changing them to 5 or 3 watts and using only two at a go will go a long way to minimize yoir setup

5. If you can get them DC fan of 30W max. That will be good for your setup

6. Say your neighbor have 3 lamps to charge i.e. 9W x 3 and phone charging say 12W x 4 phones. That's 18W + 48W =66W for say three(3) hour period - 198Wh
( when you decide to go solar then only a device per person is best allowed) else your battery go hear am.

Conclusion

With a TV - 60W+ bulbs 10W+ decoder 20W + fan 30W = 120W for 5 hours is a 50% Dod for 100Ah battery

So a 1kva 200Ah Solar system with these new aforementioned suggestions, & your 10 hours of GRID supply should keep your going for 24 hours of power with no interruption. (Your neighbor charging wasn't included)

hooryo:
.
TV 145w
Fridge 90w
Speaker 60w
I have 4 bulb
Not sure of my fan’s watt rating..
And also my neighbors use to charge at my side.

Please I need a good Solar Inverter technician to inspect my solar set up around Mowe. I don't seems to be getting an ultimum charge for my set up.

Any reliable contact please?

I'm pretty sure that with decent batteries, it's not a problem to run your whole house on solar energy. Also, I have a 2000 watt inverter just as a source of backup power in case of emergency, and it really saved my life a few times. So in general, I don't see any reasons why someone wouldn't like to cut their electricity bills.

FireTheSun:

https://qz.com/2130711/electric-vehicles-make-it-harder-to-quell-fire-on-felicity-ace-cargo-ship/?utm_source=YPL


Lithium-ion batteries are fueling the fire on a burning cargo ship full of Porsches

Holy Molly.

I hope those are not LiNiMC cos those are worse off; typically comes with class 3 fires that are much more challenging to extinguish with your typical fire extinguisher cos it literarily does not require oxygen to burn.

If it's LFP well, it will still be better.

A friend is urgently looking for TriStar Mppt External Meter to buy.

Valto:
lets see the pictures of your battery and inverter. your is likely a fake 100ah, how much did buy it

I bought both batteries for 80,000

Michaelondon53:
I bought both batteries for 80,000

name. any picture of the battery? what battery chemistry? GEL, AGM, TUBULAR? what of your charge profile

earthrealm:


UNFORTUNATELY, ur charge controller --felicity --is not a very good make, it doesn't record cumulative daily harvest, that would have helped us ascertain if your solar production is ok or not. from 2160w...i expect you to produce an avg of 5.5kwh to 7kwh daily in this harmattan period.
you shudnt run your freezer 24/7....as this will deplete about 2.7kwh of your daily harvest....already about half.

i hope your inverter is notthe heavy/transformer felicity model?...if yes..it has high idle consumption of over 120w, so just for being on...its draining energy from the battery, like you have a 2nd freezer .

3rdly, one or 2 of the batteries may be bad drawing the system down and not taking charge.

going forward, get this battery voltage display device, that can show individual battery voltages at a glance. get the installer to change your inverter to a hybrid unit, these have low idle consumption and log dily solar panel production.

lastly, like u hv been told already, shut the inverter down and allow the charge controller, attempt to charge the battery full again, after which only run the freezer for 9am to 4pm

Please which is the heavy or transformer felicity model

mrlien:


Please which is the heavy or transformer felicity model

you know the old mustpower or prag...inshort any 3kva to 5kva inverter above 26kg is most likely old technology - transformer based..and would have a high idle consumption. like the 4kva of the attached..consumes 130watts just for being on, zero load

Is this inverter a good brand ??

.....

Please i need clarification on how best to carry out a capacity test.

I ran two sample capacity test on 3.12KWH lithium ion pack

Test 1: Inductive load using freezer consuming 350W lasted for 4hrs(battery was on 23.6V but when load is off, battery goes back to 25.6V)

Test 2: Non inductive load of 250W lasted for 9.5hrs(battery was on 23.9V but when load is off, battery goes back to 24.6V)

How best can i deduce battery capacity since am yet to get a coulomb counter.

rajo4real:
Please i need clarification on how best to carry out a capacity test.

I ran two sample capacity test on 3.12KWH lithium ion pack

Test 1: Inductive load using freezer consuming 350W lasted for 4hrs(battery was on 23.6V but when load is off, battery goes back to 25.6V)

Test 2: Non inductive load of 250W lasted for 9.5hrs(battery was on 23.9V but when load is off, battery goes back to 24.6V)

How best can i deduce battery capacity since am yet to get a coulomb counter.

the pack is likely a locally made pack?..its either wrongly badged or defective/unbalanced cells are inside.

do you have access to communicate with the internal bms?

the 350w load shud have done 7 to 8hrs., while the 250w should have done 10 to 11hrs...it did 9.5hrs...fair enough.

is the pack sealed?..can u send a picture of the internals..if possible

Is this battery a good buy. Someone wanna sell for 50k each he claimed they are fairly used 150ah each

earthrealm:


the pack is likely a locally made pack?..its either wrongly badged or defective/unbalanced cells are inside.

do you have access to communicate with the internal bms?

the 350w load shud have done 7 to 8hrs., while the 250w should have done 10 to 11hrs...it did 9.5hrs...fair enough.

is the pack sealed?..can u send a picture of the internals..if possible

Oga earthrealm, the pack is a DIY pack which was locally made by me with a cheap BMS slapped on it to test.
The cells are fairly balanced but what am not clear with is battery is fairly ok with non inductive load but performs poorly on inductive loads.

What could be the issue?

Michaelondon53:
Is this battery a good buy. Someone wanna sell for 50k each he claimed they are fairly used 150ah each

fairly used batteries na black market, what u see, is not always what u get. your best bet is to demand for a one or 2 weeks guarantee from the seller, that will give u enough time to throughly test it.

Michaelondon53:
Is this battery a good buy. Someone wanna sell for 50k each he claimed they are fairly used 150ah each

The brand is not a bad brand. I've, once upon a time when lead acid ruled the space, used 4 numbers of 200AH of same brand which was fairly used and it lasted for 3 years plus. I got lucky as the one I bought was truly fairly used. I can't say if the one you want to buy is truly "fairly" used or "brutally" used before being sold.

I'll recommend getting a good guarantee (something like money back if after two weeks you don't like what you see). But I know this type of warranty is like selling ice cubes to an Eskimo , e hard

Job vacancy!

Luminant Tech. Systems is looking to recruit an inverter/solar system technician
.
The ideal candidate should be able to;

1) Read, understand and interprete technical information (installation instructions, electrical wiring diagrams, product manuals e.t.c) in English language.

2) Understand 3 phase and single phase electrical wiring and codes.

3) Be able to install basic inverter systems at a minimum (we will fill in any gaps with training)

4) Live in/around Lekki/Ajah axis.

If you are interested in this vacancy or know anyone who would fit, please reach out to niyi@luminanttechsystems.com with an application (cover letter, skills summary and C.V).

You can also kickstart the process via whatsapp message to 0 8 0 8 1 1 4 4 4 4 2

Thank you

rajo4real:


Oga earthrealm, the pack is a DIY pack which was locally made by me with a cheap BMS slapped on it to test.
The cells are fairly balanced but what am not clear with is battery is fairly ok with non inductive load but performs poorly on inductive loads.

What could be the issue?

Blame the inverter, for behaving differently on inductive and non inductive perhaps efficiency drops below 80% on inductive

Call/Watsapp us on 08066332919 for your INDUSTRIAL POWER BACKUP SOLUTION.

I need 4S smart BMS for lifepo4. Anyone that has can quote me. Thanks.

felaliveson:
Is this inverter a good brand ??

.....

This is definitely transformerless MSW inverter. The 3000w stated on it is a taboo. MSW will damage your inductive appliances

Is Gacia battery a good product? Please i need names of good battery brands in the market and also an answer to my question...Thank you

Evan65:
Is Gacia battery a good product? Please i need names of good battery brands in the market and also an answer to my question...Thank you

Gacia likely in the same league with GBM and the rest. if u must use lead acid and not lithium, kindly walk into fullriver office in Lagos.

[Quote author=olopan post=110434089] As a contribution to the ongoing solar panel energy production debate, which many with monitoring system can attest to is.

For us a rule of thumb,

1. Tier 2 panels are calculated with 0.55% of nameplate or total PV capacity for period of 4 Hours.

2. Tier 1 panels are calculated with 0.65% of nameplate pr total PV capacity for period of 4 Hours


If the system is loaded I.e. energy storage and loads then it is expected to see energy production in line with above.

This proven true by remote monitoring.

Conditions based on a normal sunny day

[/quote]

I have been taking logs of my solar installation since 2017 over 80% of those logs collects real time to information every 10sec of panel generation including peak power and total generated energy for the day.

What I have come to understand is, a lot goes into your solar panel harvest than just being tier 1 or tier 2.

The most important thing is how the panels were installed. What is the angle of inclination and the direction the panel is facing.

What is th installation design. Does it flush with the roof or is it installed on a roof rack. Lastly Location location. A solar panel installed in jos would have a different average yield compared to one installed in calaba.

A well optimized panel installation beats a tier 1 panel installed "wrongly"

Here are key pointers.

Ensure your panels are installed as flat as possible. Nigeria is just above the equator so your panels so the flater your get your panel the better.

7°horizontal tilt facing through true south. Send down the rain type of roof you see in many "mansion" in Nigeria are not ideal for solar.

As much as possible avoid your panel facing the north of you have no choice then make it as flat as possible using the roof rack to offset the non ideal roof angle.

Best to avoid mounting your panel directly on the roof. The roof is the hottest part of the house and heat is the enemy of solar generation. In fact panels derate the hotter it gets and you can lose close to 10 to 20% of your generation due to heat. Mounting on a rack that elevates the panel above the roof allows for it to be air cooled and reduces heat transfer from the roof.

If you have a large compound consider ground mount but ensure they are no partial shading. Ground mounts are best. Your panels can be tilted optimally, can be easily cleaned during the dusty period and easy to earth them.

Wiring is also very important. Lots of losses can happen between the panel and charge controller. As much as possible strive for higher voltage configuration to avoid pushing too much amps down the wire. This is one of the beauty of MPPT. It allows your to string your panel into higher voltage strings thus reducing the need for large wiring and associated cost between panel and controller.

Note that the thiner the wiring conductor surface area the higher the resistance and losses. There are lots of site that that help calculate how to size your wiring relative to amps/voltage and distance.

If your panels are far from your cc, you need thicker longer cables or you might want to consider a controller that can table high voltage panel Strings like 250v and use that to reduce loses and wiring cost.

In all, it is very reasonable to get 70% or even higher from your panel if the condition is right. My 3kw panel does 2500w standard as need demand and as weather permits.

It is however good practice to size your system in the design stage with conservative figures just ensure you thrive to beat those figures in the actual implementation.

ajabani4allah:


This is definitely transformerless MSW inverter. The 3000w stated on it is a taboo. MSW will damage your inductive appliances

I need it just for TV, decoder Nd a light or two …. Can it serve the purpose? What battery, solar panel nd controller, will you recommend ?….


….

felaliveson:


I need it just for TV, decoder Nd a light or two …. Can it serve the purpose? What battery, solar panel nd controller, will you recommend ?….


….

It's ok for the light and the decoder but Most MSW inverter will make TV produce an irritating humming sound. If your TV is 12V DC Led tv Just get 100Ah battery and connect your TV direct to it while you use the inverter for the light and the decoder

bigrovar:
[Quote author=olopan post=110434089] As a contribution to the ongoing solar panel energy production debate, which many with monitoring system can attest to is.

For us a rule of thumb,

1. Tier 2 panels are calculated with 0.55% of nameplate or total PV capacity for period of 4 Hours.

2. Tier 1 panels are calculated with 0.65% of nameplate pr total PV capacity for period of 4 Hours


If the system is loaded I.e. energy storage and loads then it is expected to see energy production in line with above.

This proven true by remote monitoring.

Conditions based on a normal sunny day



I have been taking logs of my solar installation since 2017 over 80% of those logs collects real time to information every 10sec of panel generation including peak power and total generated energy for the day.

What I have come to understand is, a lot goes into your solar panel harvest than just being tier 1 or tier 2.

The most important thing is how the panels were installed. What is the angle of inclination and the direction the panel is facing.

What is th installation design. Does it flush with the roof or is it installed on a roof rack. Lastly Location location. A solar panel installed in jos would have a different average yield compared to one installed in calaba.

A well optimized panel installation beats a tier 1 panel installed "wrongly"

Here are key pointers.

Ensure your panels are installed as flat as possible. Nigeria is just above the equator so your panels so the flater your get your panel the better.

7°horizontal tilt facing through true south. Send down the rain type of roof you see in many "mansion" in Nigeria are not ideal for solar.

As much as possible avoid your panel facing the north of you have no choice then make it as flat as possible using the roof rack to offset the non ideal roof angle.

Best to avoid mounting your panel directly on the roof. The roof is the hottest part of the house and heat is the enemy of solar generation. In fact panels derate the hotter it gets and you can lose close to 10 to 20% of your generation due to heat. Mounting on a rack that elevates the panel above the roof allows for it to be air cooled and reduces heat transfer from the roof.

If you have a large compound consider ground mount but ensure they are no partial shading. Ground mounts are best. Your panels can be tilted optimally, can be easily cleaned during the dusty period and easy to earth them.

Wiring is also very important. Lots of losses can happen between the panel and charge controller. As much as possible strive for higher voltage configuration to avoid pushing too much amps down the wire. This is one of the beauty of MPPT. It allows your to string your panel into higher voltage strings thus reducing the need for large wiring and associated cost between panel and controller.

Note that the thiner the wiring conductor surface area the higher the resistance and losses. There are lots of site that that help calculate how to size your wiring relative to amps/voltage and distance.

If your panels are far from your cc, you need thicker longer cables or you might want to consider a controller that can table high voltage panel Strings like 250v and use that to reduce loses and wiring cost.

In all, it is very reasonable to get 70% or even higher from your panel if the condition is right. My 3kw panel does 2500w standard as need demand and as weather permits.

It is however good practice to size your system in the design stage with conservative figures just ensure you thrive to beat those figures in the actual implementation.

very spot on. i couldn't agree more. tier 1, tier 2 or tier 3 means nothing if the basics are swept under the rug.