Ojeysky's Posts

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Technology Market › Re: Buy Plasma, Lcd And Led Televisions For Affordable Pricein Lagos. by ojeysky(m): 2:41pm On Jun 14, 2020

acunon:
Newest Samsung 40" Smart hub 4K Ultra HD 2018/2019 LED TV with Wi-Fi Ready Bluetooth TinzenOS 5.0 Apple Air Play HDR 10 plus One remote support Bixby and many more UA40NU7100 going for 95K negotiable

What is the power consumption like?

Autos › Re: Clean Benz C230 Kompressor 1.8m Sold!!! by ojeysky(op): 12:21pm On Jun 14, 2020

Nice Benz

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 9:57am On Jun 14, 2020

Justin288:
I rather do DIY than buy some of these fancy lithium packages. I first learnt about lithium on this group 10months ago and started researching and getting all the devices I needed gradually. Last week able to setup my 15s120p. 230Ah tested.
With plans for 5 rows of 15s expansion.
At least I know what am dealing with.
Covid 19 Lockdown helped sha.

Wow! I am still trying to understand why doing they many pieces of lithium is preferred over getting the bigger prismatic cells of LFP? I see you are running MPP, that's cool apparently we have many MPP users here cheesy

Autos › Re: Clean Benz C230 Kompressor 1.8m Sold!!! by ojeysky(op): 11:01pm On Jun 13, 2020

Still available

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 7:42pm On Jun 13, 2020

ceaser:
Sorry I didn't get the price?

https://www.nairaland.com/390522/solar-energy-complement-fta/754#90070159

Investment › Re: Nigerian Stock Exchange Market Pick Alerts by ojeysky(m): 6:32pm On Jun 13, 2020*

on4a:
What's going on with meristem sending a link for client update form over the weekend? https://forms.meristemng.com/client-update-form/?
Is this legit? Too much details being requested and I just wonder why I can't update this directly on my meritrade online account.

I didn't receive this

Edit: I have now seen it, strange they are asking for such huge information and putting 48hrs deadline. Something must be wrong somewhere

2 Likes

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 5:23pm On Jun 13, 2020

mctfopt:
Thanks a lot. Don't they have it at 5kva?

Perhaps they have but when I last checked, 10kva was the least I saw

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 5:22pm On Jun 13, 2020

ceaser:
Any spare 24v LFP charger for sale?

Someone that just procured a 24v pack might be interested though not sure yet.

I still have 2 units available for sale

Computers › Re: Inverter Users : Lets Have Your Experience by ojeysky(m): 3:31pm On Jun 13, 2020

etibaba:
Good day, please can I use 4 batteries of 12v (200ah) each on a 24v inverter?

Sure, that will be 2s2p arrangement

1 Like

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 3:30pm On Jun 13, 2020

mctfopt:
Anyone know of a good 5kva servo stabilizer?

If you can up your budget to 10kva then get a dunamics stab.....it simply rocks!

2 Likes

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 3:29pm On Jun 13, 2020

spartacus11:
Yeah the guy on the YouTube link talk about balancing, and he said onece in 4-6 months

But i was thinking if i stay within the allowed charging and discharging capacity will that be fine without BMS?

Also it seems like Smart Chargers for lead acid battery will also do better in charging of Lifepo4, the highest Volts on my smart charger is 14.8V the amp the highest amp is 8.6A for 12v and about 4A for 24v

Most of the voltage i have seen for lifepo4 is 14.4V my question is will the 8.6A be enough to charge a 12.8v 105Ah bank of Lifepo4

8.6A will charge an LFP it's just a matter of how long it will take to charge. You should get a more powerful charger, i think @Juo said he has a 40A.
Fyi I have a 50A 24v

Technology Market › Re: The Xiaomi Thread Store by ojeysky(m): 10:42pm On Jun 12, 2020

fibonacci2526:
2 units of factory unlocked brand new OnePlus 7T 8/256gb (dual sim)landing soon. Price is ₦200k each

150k?

1 Like

Technology Market › Re: The Xiaomi Thread Store by ojeysky(m): 7:53pm On Jun 12, 2020

Anyone with new Xiaomi redmi note 9 Pro or OnePlus 7t for sale?

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 7:26pm On Jun 12, 2020

JUO:
my system is 48v. This 4pcs is for research purposes

Okay those ANT BMSes, Noted!

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 7:15pm On Jun 12, 2020

JUO:
I have not hooked up the bms yet. I don't want stories. The bms I have is more expensive than the battery so I can't use it with it

Lol that's understandable, as to BMS you mean your 12v BMS is over 100k?

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 6:41pm On Jun 12, 2020

JUO:
I stopped at 3.5v/14v

Depending on charging source, at 3.45v can get the battery full.....you were probably already at over 90% when you stopped. The charging current would have tapered down if you allowed it a few more minutes. Just curious why did you stop? Were you doing the charging without BMS?

Technology Market › Re: House Clearance Sales.. Come In Here!!!! by ojeysky(m): 3:53pm On Jun 12, 2020

tempest12:
I have brand new inverter AC 1hp

Which one of them? Location and price

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 3:51pm On Jun 12, 2020

JUO:
first test. I think is better to stop at 3.1v. Let me observe the voltage after 3.1v

Yeah since it's still new you will get a little above capacity (say 110AH) just for a few cycle. Trust me it was almost full by the time you started the test

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 3:48pm On Jun 12, 2020

spartacus11:
Ok thanks my initial plan was to go 24V but lead acid, since i am going lifepo4 i had to settle for the 12V

The inverter does not have inbuilt charger it is a stand alone inverter

Ok the makeskyblue 40A or 60 which will be better as i don't want to use more than 4 panels 250-360w panel because of space, make landlord nor go vex for the roof mata

I will search for the 12V LFP charger

Get the 60A makeskyblue or powermr both are of similar spec.

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 1:33pm On Jun 12, 2020

spartacus11:
Ok so in calculating

Normal voltage 3.2V i.e 3.2x4

Or the

Resting Voltage 3.3V i.e 3.3Vx4

I will work on adding solar to the set up later, how many Watts panel do you think i need to plan for since i am going for the 12V lifepo4 bank

But i think i will start with Nepa changing first, bcus of Budget limitation, so what type of charger will you recommend?

This is the inverter i will be buying the 12V 4000W which is actually 1800-2000W in reality, its budget friendly and the review online seems to show it sine wave is actually clean

Nominal voltage is 3.2, resting voltage is the voltage when the battery is not charging and not on load. That can be anything, but the figure when it's full should be around 3.35.

If you are doing 12v, you can get the makesky CC or any other MPPT controller. The inverter you are buying is okay, but if it has inbuilt charger, don't use to charge via utility as it not meant for LFP. I currently only have 24v LFP chargers may have a few more 12v in future but you can check jiji for those (if you are lucky)

Regards

Car Talk › Re: Mercedes Benz Thread by ojeysky(m): 8:48am On Jun 12, 2020*

Conductor261:
How can you compare the w202 to the w203?

Am not comparing am basically talking about your once hit porthole declaration. A c230 that enter porthole and breakdown down is a scenario that can happen to any other Benz as well.

Autos › Re: Clean Benz C230 Kompressor 1.8m Sold!!! by ojeysky(op): 4:34am On Jun 12, 2020

Great air-conditioning system, grab the ride

Autos › Re: Lagos Cleared Clean Camry 2007 LE Red Colour - SOLD!!! by ojeysky(op): 4:22am On Jun 12, 2020

Nice car, come get it

Autos › Re: Lagos Cleared 2012 Toyota Camry SE Black - SOLD!!! by ojeysky(op): 4:20am On Jun 12, 2020

Still available and it's with reverse camera

Autos › Re: Clear Your Consignment With Ease Via Tincan, Apapa Port by ojeysky(m): 3:42am On Jun 12, 2020

Oneplus:
Abeg is there any thing like ENFORCEMENT settlement.

How much can clearly camry 2012, 2013 & 2014 model

My brother some things don't have receipt o... So it can vary

Autos › Re: Clear Your Consignment With Ease Via Tincan, Apapa Port by ojeysky(m): 3:27am On Jun 12, 2020

sabcurr:
Received my 2013 LEXUS GX460 TODAY that was on board Hoegh Singapore. Total duty paid to customs N2.208m... Excluding other running/clearing expenses.

Congratulations that was quite fast

Car Talk › Re: Mercedes Benz Thread by ojeysky(m): 3:25am On Jun 12, 2020

Conductor261:
He asked for a W202. Not a freaking W203 whose trims fall apart at the next porthole

Okay and w202 survived in such porthole, clap for yourself, you try well well.....I guess your goal here is a "talk them down approach".

Technology Market › Re: House Clearance Sales.. Come In Here!!!! by ojeysky(m): 3:19am On Jun 12, 2020

Kulex56:
TV stand 20k
Contact 07050204583

Still available? Location?

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 3:16am On Jun 12, 2020*

adrusa:
I have no regret investing in these "cheap" Lithium. I can not pay the price people are asking for pylontech, BYD or Battleborn. I'm a poor civil servant.

Right, you don't even need to be poor to go the efficient and reasonable route; If I can get double capacity of pylontech at same cost, why not. Nevertheless I commend those that use the fancy plyontech as well as they have their reasons... It's just a case of one man's food(breakfast) is another man's food (dinner) but not another man's poison. All na food/LFP eventually

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 3:05am On Jun 12, 2020*

spartacus11:
There is also one Specification sheet i saw of Lifepo4

It agrees with you submission

End of discharge voltage 2.5V

The 3.6V you talk about is it the Full charge limit

Am i correct

Lifepo4 for a 12V Bank

Normal Voltage 3.2V x4=12.8V

Full charge voltage 3.6Vx4=14.4V

Discharge limits voltage 2.5vx4=10V

You are correct except that it's not a full charge voltage but rather a charge voltage (bulk voltage or in lithium terms Constant voltage CV). This is typically charging the cells at voltage higher than the resting voltage in other to get enough amps in as the CC set-up permits. So you can charge a Lifepo4 up to 3.65v but the eventual resting voltage when it's full is about 3.35v..I personally don't charge up to 3.65 as it's not necessary, anything from 3.45 bulk will get your cells charged to at least 90% capacity.
I use the following at the moment for my 24v (due to solar CC float bug issues that puts my system into early float)

Bulk - 28.2
Float - 27.2 (note that you really don't need a float for LFP but I can't disable it unfortunately)
Battery cutoff - 24v

If you are only charging from utility your bulk would be fine at 27.6v.

Note for a 12v system you don't want to discharge to 10v, I suggest you stick with 12v as the minimum. If your system permits, 12.5v low disconnect is better. By the time you are at 3v per cell, you've already taken over 90% out of the battery

2 Likes 1 Share

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 2:53am On Jun 12, 2020

spartacus11:
I had to check up the 2 battery u listed Battleborn and ruixu omo Lead Acid fall our hand ohhhh

See lithium dey blaze

Lead acid was able to pish to 67Ah why lifepo4 dey do 93Ah and 95Ah

https://www.youtube.com/watch?v=WVxvBkeY0UY

Just imagine the level of inefficiency in lead acid. Apart from the fact that recommended discharge level of lead acid is 50% to get reasonable cycle out of it, you loose additional 10 to 15% due to Peukert effect. So when we say that a 100AH Lifepo4 is equal to or more than a 200AH lead acid[b] in practice[/b] I don't think we will be exaggerating

Satellite TV Technology › Re: Solar Energy, A Complement To FTA by ojeysky(m): 12:32am On Jun 12, 2020

spartacus11:
How true is this claim

LifePo4 battery can deep discharge till 100% DOD. Even the voltage goes down to nearly 0 volt shortly, it can still recharged to rated voltage

While you can discharge a Lifepo4 to 100% capacity without major issues, it's not applicable to the voltage. If the voltage gets below 2.5v then the battery is toast. It's certainly doesn't look correct to me that you can discharge a Lifepo4 to bear 0 volts but you can discharge to hear zero capacity so long as you are still within the 3.6 to 2.5 band

spartacus11:
Lifepo4 seems to look easy to put together just like lead acid battery

Lifepo4 is one of the most interesting to put together, just like the lead acid indeed. Just don't mix up the series/parallel arrangement of the cells.

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