earthrealm:


To view 【NGN 19,464.36 16%OFF | SHYLIYU 1" Outlet Stainless Steel Screw Water Pump 3" OD Pipe 0.33Hp Submersible Deep Well Pump 20m Cable Centrifugal Bore Pump】 on AliExpress with code #_d7emt9a#, copy the whole sentence and open the app.

My only question is....would an 850va luminous hybrid inverter be able to handle its startup surge.

The bot must really not like you. I post links here all the time

earthrealm:


The existing setup is 12v x 200ah battery, hooked to 2 x 250w panels, my fear is that the extra strain of running the 250w pump for 2 to 4 hrs daily, may be draining the batt badly, especially during poor weather...hence my uncommon plan to put 2 3xtra panels on timer...

I intend to wire it up with a float switch as well, to control tank fill up and pump shitdown as the setup is designed to be purely autonomous since its its in the villa and no knowledagble person around

@ aliexpress, yes received items from there, but hvnt oredered the pump yet.
Learnt nipost hv suspended ops for 2wks, so AliExpress purchases are a bit dicey now

Shipping cost of that thing on AE outweighs the value o

ojeysky:


Shipping cost of that thing on AE outweighs the value o

Major reason why i run away from so many good item on AE

spartacus11:


Major reason why i run away from so many good item on AE

Send link to Lstar4real on nairaland. You'll get a response with quote in naira for item cost plus freight to Lagos at a reasonable exchange rate and shipping cost.

You can also send whatsapp message to his dedicated line zero8136zero72824.

https://057tech.com/solar

This is inspirational.....but its gonna cost some good bar, as in damn real good bar.

ojeysky, ceasar and other lifepo4 users, how would you advise using a pwm cc to charge a lifepo4 battery?

essegis:
https://057tech.com/solar

This is inspirational.....but its gonna cost some good bar, as in damn real good bar.

This one will be a state project not even local govt

BetaTechnicians:
ojeysky, ceasar and other lifepo4 users, how would you advise using a pwm cc to charge a lifepo4 battery?

Unless you have the pwm already you are better off with mppt so as to maximise the panel capacity because lithium will typically want to get as much current as possible

BetaTechnicians:
ojeysky, ceasar and other lifepo4 users, how would you advise using a pwm cc to charge a lifepo4 battery?

To add to what has been said, you are better off with an MPPT SCC as most of it are customisable. You can change the voltage at which your battery charges, a feature which I doubt you'd get with most PWM.

essegis:
https://057tech.com/solar

This is inspirational.....but its gonna cost some good bar, as in damn real good bar.

If I have this, I'll never use public utility ever again.

earthrealm:


The existing setup is 12v x 200ah battery, hooked to 2 x 250w panels, my fear is that the extra strain of running the 250w pump for 2 to 4 hrs daily, may be draining the batt badly, especially during poor weather...hence my uncommon plan to put 2 3xtra panels on timer...

I intend to wire it up with a float switch as well, to control tank fill up and pump shitdown as the setup is designed to be purely autonomous since its its in the villa and no knowledagble person around

@ aliexpress, yes received items from there, but hvnt oredered the pump yet.
Learnt nipost hv suspended ops for 2wks, so AliExpress purchases are a bit dicey now

Okay if I get you well, you intend that the 2 extra panels will work only on needed basis. When the timer kicks the pump in, the 2 extra panels also get auto connected thereby increasing the solar power input and that way the batteries do not get overcharged.

But I think that will only be possible if your existing SCC has not been maxed up already such that it can still accommodate the 2 extra panels, other wise, I'll suggest you get another small SCC that can handle the two new solar panels and get it booked onto the batteries.

That would also mean you will use your existing inverter, abi?

And I'm unable to get the link to view the pump o.

BetaTechnicians:
ojeysky, ceasar and other lifepo4 users, how would you advise using a pwm cc to charge a lifepo4 battery?

Of course you can. LFP is not a voltage fad like lead acid which requires boost, float and equilibrium charges. If your PWM CC is user editable, then better. You just need to edit the max charge voltage to the manufacturer's recommended for the LFP. You may not have that luxury with PWM that lacks user editable options because you will only be limited to a boost charge of around 14.2v which is okay for your regular 12v LFP, but then that will be for a while as your CC will then drop to the 13.5v pre-set float charge at it tries to follow the in-built lead acid battery charging algorithm.

Your charge voltage sustained at 14.0/14.2v till sundown is the best for a 12v LFP.

You will not get the high efficiency from solar panel input that characterises MPPT with the PWM though.

mctfopt:


To add to what has been said, you are better off with an MPPT SCC as most of it are customisable. You can change the voltage at which your battery charges, a feature which I doubt you'd get with most PWM.

I used a PWM with the first LFP I had and the SCC was user customisable. But of course I missed the efficiency that MPPT offers.

I got that 30A PWM off of AE about 4 years ago and only used it for the first time late last year. Hoping to have an extra one, I have been scouting on AE for one with customizable options without luck.

NiyiOmoIyunade:
While on solar, the current passing through the cables may not be zero especially if there are house loads running. Even without loads, whether running Mains passthrough or on solar, a good charger will still put out some very low amps (trickle charge) while the battery is full and in float - this kind of charge helps offset the internal self discharge of the battery.

A sure way to know if your battery is full is coulomb counting such as you do with a battery monitor like Victron or Fangpusun or Bogart - you basically measure the net amps in and/or out and then declare the battery full when sufficient amps have gone into the battery to replace what was used (various parameters need to be met to satisfy the battery full criteria)

A quick and dirty way is to use the battery voltage while charging as an indicator of state of charge - if your battery hits absorb and stays there for a preset time, you can declare the battery full for all practical purposes especially if you see the current drop sharply to a level called 'tail current'.

This is so true... for controllers that support it the setting the tail current is very crucial in determining and efficiently charging a lead acid battery. In my case I set my tail current to be 4MB which is 1% of my 400AH 24v battery bank. It is suppose to charge at level for 30 min at 29.2v at which point it switches to float charge.

ceaser:


Okay if I get you well, you intend that the 2 extra panels will work only on needed basis. When the timer kicks the pump in, the 2 extra panels also get auto connected thereby increasing the solar power input and that way the batteries do not get overcharged.

But I think that will only be possible if your existing SCC has not been maxed up already such that it can still accommodate the 2 extra panels, other wise, I'll suggest you get another small SCC that can handle the two new solar panels and get it booked onto the batteries.

That would also mean you will use your existing inverter, abi?

And I'm unable to get the link to view the pump o.

Nope, my cc is 24v 50amps mppt fangpusun with inbuilt display, so it can handle it

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This is another sweet one, 12v 6000Lph 180w, only slight draw back is the lift is 45m, unlike the other with lift of 70m

#Aliexpress NGN 16,705.67 20%OFF | 45m 12V Solar Water Pump High Lift 6000L/h Deep Well Pump DC Screw Submersible Pump Agricultural Irrigation Garden Home
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mctfopt:


If I have this, I'll never use public utility ever again.

See this one. Instead of registering to be a Disco you are here dreaming small

Namzy:

See this one. Instead of registering to be a Disco you are here dreaming small

Not a dreamer, just a realist

*As we watch the day unfolds and nobody is able to stop it, so shall our hopes, dreams, and aspirations be unstoppable this month and beyond. A happy new month to y’all*

*� Manuel Solar Energy Enterprises.

stay safe y’all!

Namzy:

See this one. Instead of registering to be a Disco you are here dreaming small

ojeysky:


Unless you have the pwm already you are better off with mppt so as to maximise the panel capacity because lithium will typically want to get as much current as possible

It's just a small setup & I don't see the need for a mppt cc due to cost.

mctfopt:


To add to what has been said, you are better off with an MPPT SCC as most of it are customisable. You can change the voltage at which your battery charges, a feature which I doubt you'd get with most PWM.

So if the pwm has editable voltage, it'll work, yes?

ceaser:


I used a PWM with the first LFP I had and the SCC was user customisable. But of course I missed the efficiency that MPPT offers.

I got that 30A PWM off of AE about 4 years ago and only used it for the first time late last year. Hoping to have an extra one, I have been scouting on AE for one with customizable options without luck.

The bulk & float voltages just need to be set to same value, right?

bigrovar:


This is so true... for controllers that support it the setting the tail current is very crucial in determining and efficiently charging a lead acid battery. In my case I set my tail current to be 4MB which is 1% of my 400AH 24v battery bank. It is suppose to charge at level for 30 min at 29.2v at which point it switches to float charge.

4MB

If cost is a consideration, JUO sells a Fangpusun 100v 50A MPPT CC for around 40k.

It is altogether an excellent CC in that class and suitable for 12v and 24v nominal systems.

BetaTechnicians:

It's just a small setup & I don't see the need for a mppt cc due to cost.

BetaTechnicians:

It's just a small setup & I don't see the need for a mppt cc due to cost.

Hmm.....how small?

BetaTechnicians:

So if the pwm has editable voltage, it'll work, yes?

If your controller's output voltage matches that of your battery's specified charging voltage, then you are good. Irrespective of whether it has the feature where one can change the output voltage or not.
But as you already know you can't beat the efficiency of an MPPT with a PWM of same make.

NiyiOmoIyunade:
If cost is a consideration, JUO sells a Fangpusun 100v 50A MPPT CC for around 40k.

It is altogether an excellent CC in that class and suitable for 12v and 24v nominal systems.

Hahahahahahahah.
Are you sure JUo sells it for 40k

NiyiOmoIyunade:
If cost is a consideration, JUO sells a Fangpusun 100v 50A MPPT CC for around 40k.

It is altogether an excellent CC in that class and suitable for 12v and 24v nominal systems.

Noted thanks. I'll add that to my options before a final decision.

ojeysky:


Hmm.....how small?

I saw a 12V 50AH lifepo4 advert and was thinking of getting that, so just trying to get smaller peripherals for it.

mctfopt:


If your controller's output voltage matches that of your battery's specified charging voltage, then you are good. Irrespective of whether it has the feature where one can change the output voltage or not.
But as you already know you can't beat the efficiency of an MPPT with a PWM of same make.

sure but if a Gokada can take me to and fro, why disturb an uber?

BetaTechnicians:

I saw a 12V 50AH lifepo4 advert and was thinking of getting that, so just trying to get smaller peripherals for it.

Okay that's indeed small I won't worry much about the type of CC then but if you are looking at increasing capacity in future then it's better to plan for future scaling by getting good CC so you just have to worry about panels and batteries in future.

ojeysky:


Okay that's indeed small I won't worry much about the type of CC then but if you are looking at increasing capacity in future then it's better to plan for future scaling by getting good CC so you just have to worry about panels and batteries in future.

Hi, I'm new to this and trying to research as much as I can about solar systems so I can get a good system that will serve me well.

From what I've researched about LiFePo4, a 50ah lifepo4 battery should be equivalent to a 100 ah lead battery since those only have about 50% usable capacity.

If so this makes Lifepo4 batteries have the same price as lead acid for the same usable watt-hours.