bassdow:


hmm

you guys still on this.

see I know what we say matters BUT , I'm yet to see where I got it wrong.

I also AGREE No One KNOWs it ALL

---

I used a phone as example, and we all knows it's difficult seeing a 5-volts, 400A phone charger BUT that was just to back up my talk that Current is drawn, while Voltage flows in.

It was a general talk not focusing on anything in particular, not even focusing on Lead Acid batteries the question was asked under.

So if you want to proove me wrong, please supply evidence (with notable Links), to back it up.

When I see something as RED, and GOD comes calling it WHITE, He has to really PROVE it else I no go gree. Not even because He's a God sef would make me blindly accept.

1. No lithium cells comes with a BMS: I disAgree with you here, both from personal experience, and from asking Aunty Google.com. I have built (not assemble/couple) a lot of things Sir. Also I have torn things apart right from my childHood days. Anyways, see Aunty google's response when asked https://www.google.com/search?q=do+lithium+cells+come+with+bms

2. A 5v with 400A source connected to a phone will sure blow it up as the current limiting diodes will fail at some point if not immediately: Rather than drop my opinion, which you obviously wouldn't accept, let me drop you a link. you're free to search more similar links https://www.physicsforums.com/threads/will-a-high-current-3-1a-destroy-smartphone-battery.789365/

3. A lead acid Max charge current needs to set on the charger to avoid spoiling the battery : Well don't want to say you're entirely RIGHT here. Because I know leadAcidBatteries have 3-stages of charge namely bulk, absorption, and float. and the current ain't constant in all these stages.

In battery charger, Current is being limited, else the Connected battery would try to draw as much current as it needs (Recall I said numerous times already that Current is DRAWN, while VOLTAGE flows in)



I no say I no study Elect / Elect or do BoyBoy for electrician, but that one no mean say the small one wey I sabi, I no sabi am well.

ojeysky:


This thread is to share/learn experiences and what you say here is very important as it may help someone else positively or otherwise. Please have a open mind to correct what you had thought was the right thing.

1. No lithium cells comes with a BMS
2. A 5v with 400A source connected to a phone will sure blow it up as the current limiting diodes will fail at some point if not immediately
3. A lead acid Max charge current needs to set on the charger to avoid spoiling the battery
4. Lithium has a higher C rates with most of them being able to do 1C hence you have a lot of window to play around with subject to your installed BMS max

Ultimately as we say on stock thread, readers are adviced to apply due diligence on what they read here.

All the best

Queed:


I agree with you that there's a limiter capacity that if exceeded, the device might be destroyed.

The question now is what could cause this limiter capacity to be exceeded?

Certainly it can't be current because say a 2A limiter will do all it could to maintain a current 2A.

Could it be voltage? Yes!
Because the excess voltage will result to more power being dissipated by the limiter to maintain 2A current!

What could cause the excess voltage?

Case 1. The power source itself ( your phone charger )
Case 2. The battery being too low ( the limiter will disspate more power to maintain 2A for a battery that's at 3V, than when the battery gets to 4V )

So in assumption that your phone's limiter can handle Case 2 without any issue, and as long as the voltage of you charger never exceeds 5V, even if it's a 1000A source, nothing will happen to your phone.

Remember I said Most phones

Namzy:


I remember seeing a YouTube video where someone made a custom iPhone charger with 100 chargers connected to one port then to the iPhone and it charged normally.

Here just found it

https://www.youtube.com/watch?v=NSVfgYp4zD8?si=-eQHLCwP28WBby6s

bassdow:


Current is NEVER TOO MUCH because the applicance draws what it needs.
It's Voltage that CAN BE TOO MUCH because it flows into the connected device.


in other words, if a phone's charger is rated 5-volts 2A , you would have no issue connecting it to a charger rated 5-volts 400A. BUT no make mistake connect am to charger of much higher Voltage.

Queed:


For the record, I don't agree with the bolded in the context in which the question to reply was asked.

Also the bolded and '5V 400A phone charging' are completely different scenario and should not be assumed same.

kristien4:
Hello everyone... is a 40amps Ac charging current too much for 48v 200ah (four 200ahs battery connected in series)..

Namzy:


I remember seeing a YouTube video where someone made a custom iPhone charger with 100 chargers connected to one port then to the iPhone and it charged normally.

Here just found it

https://www.youtube.com/watch?v=NSVfgYp4zD8?si=-eQHLCwP28WBby6s

Queed:


Egbon Ojey you're seeing this 400A like it's already thrusting through the phone If that's the case then the phone will fry nah.

We're assuming a constant voltage source of 5V, ability of 400A and not a constant current source of 400A, ability of 5V.

I could agree with 3, and 4 you listed tho.

bassdow:


hmm

you guys still on this.

see I know what we say matters BUT , I'm yet to see where I got it wrong.

I also AGREE No One KNOWs it ALL

---

I used a phone as example, and we all knows it's difficult seeing a 5-volts, 400A phone charger BUT that was just to back up my talk that Current is drawn, while Voltage flows in.

It was a general talk not focusing on anything in particular, not even focusing on Lead Acid batteries the question was asked under.

So if you want to proove me wrong, please supply evidence (with notable Links), to back it up.

When I see something as RED, and GOD comes calling it WHITE, He has to really PROVE it else I no go gree. Not even because He's a God sef would make me blindly accept.

1. No lithium cells comes with a BMS: I disAgree with you here, both from personal experience, and from asking Aunty Google.com. I have built (not assemble/couple) a lot of things Sir. Also I have torn things apart right from my childHood days. Anyways, see Aunty google's response when asked https://www.google.com/search?q=do+lithium+cells+come+with+bms

2. A 5v with 400A source connected to a phone will sure blow it up as the current limiting diodes will fail at some point if not immediately: Rather than drop my opinion, which you obviously wouldn't accept, let me drop you a link. you're free to search more similar links https://www.physicsforums.com/threads/will-a-high-current-3-1a-destroy-smartphone-battery.789365/

3. A lead acid Max charge current needs to set on the charger to avoid spoiling the battery : Well don't want to say you're entirely RIGHT here. Because I know leadAcidBatteries have 3-stages of charge namely bulk, absorption, and float. and the current ain't constant in all these stages.

In battery charger, Current is being limited, else the Connected battery would try to draw as much current as it needs (Recall I said numerous times already that Current is DRAWN, while VOLTAGE flows in)



I no say I no study Elect / Elect or do BoyBoy for electrician, but that one no mean say the small one wey I sabi, I no sabi am well.

elpiro:
Good afternoon all, I would like to ask if this external charger is suitable for charging Lithium ion battery of 48volts. Thank you

NiyiOmoIyunade:
Not recommended.

FEGEITOK:
I want to put another inverter online as an upgrade to my existing renewable energy setup.

I need pricing for 2P-40A AC circuit breaker, 2P-160A DC circuit breaker.

Please provide both pricing and brand name

ojeysky:


On 1. You are reading lithium battery when I wrote lithium cells. Please show me a lithium cell that comes with BMS by default. Once again am not talking of a battery pack which is made up of multiple components including cells and BMS

On 2. You referred to a link where the discussion response actually confirmed my point. I hope you read it yourself. Screenshot attached. Whatever is the limiter on smartphone will be rated higher than what it's set to limit but the limiter will give way eventually

On 3. There is little or no charging at float so that's not the main point. The stage lead acid take highest current is at bulk/absorption. For a 200A lead acid that is rated C20 if you send a 50A(instead of 10A) current to the battery, it will start taking it but that will eventually kill the battery in due time. So since typically lead acid don't have BMS that you can slap on it, the best is to set current limit on the charger side.

That said the idea that a 5v can carry 400A is a dream, but assuming the dream came true, the point is that the receiving device rated for 5v 2.1A will not only take 2.1A all through, the inrush current will kill whatever is the limiter on the phone(device)

elpiro:
Good afternoon all, I would like to ask if this external charger is suitable for charging Lithium ion battery of 48volts. Thank you

Dam5reey:


This comparison is not it he didn't show the total current output.
all those apple devices acted as one because it's based on Apple's tech. He should use a 5V 150A power supply.. even Apple devices detects a non MFI compatible devices..

bassdow:


To argue or try make una see reason be like to proove to me say GOD exists.

On 1. You say "ONLY Lithium Battery have BMS, BUT Lithium cells don't". Oga have you heard or seen a protected lithium cell before ?
Every battery is made up of Cells. Sometimes sef, we call a cell Battery. Even that Car battery rated 12-volts, is composed of individual cells of 2-volts each. and as soon as one of them falls lower to a certain range, or goes bad, the entire battery bank would look and act faulty.

Let's say I wannt to build a Lithium battery bank now, annd wants to order for lithium cells, I have to specifically ask for unprotetcted cells (they are cheaper) because using the protected cells (costs more) isn't ideal. Not just cost-wise, but all the LIMITs, would add up and get in the way.
Now google protected lithium cell and see wether all the results you see were posted by people who REASONED LIKE ME


On 2. You are FUNNY and nnot honest to yourself. i say this because there were like 4 or 5 responses there and the first 1 or 2 were made by people not so sure. BUT the last 2 clearly pointed things out. You saw those BUT since it would mean you were wrong, you choose to share screenshot of the one that would make you seem RIGHT.



See eh, I am not HERE to PROVE anyTHING to ANYOne, neither Am I here to SELL market. People wey dey advertise battery bank / lithium power system no gree put mouth. who knows, maybe some dey use alternate account take dey put mouth.

I go leave una with wetin una believe in.


One thing wey Una suppose know be say, una no need wahala una sef, no matter as market take bad reach, there must be buyer sooner or later. Una get luck say a lot of us get sense inversely.

That's why you guys gets easily threatened. una dey like atmosphere where na only una dey quote everything.


Finally, I LEAVE abi I giveUp

obitobe:
I need to ask, I plan on upgrading my inverter from a non-hybrid 2.5KVA to either a 3.0 or 3.6KVA hybrid inverter, but my questions are apart from taking additional loads,

1. does a hybrid inverter help to speed charging time for a flood lead acid battery for this range of capacity.

2. for those using hybrid inverter with flood lead acid battery, what is your experience like.

Please I need your expertise here.

I will be waiting for feedbacks.

bassdow:


hmm, to best of ma knowledge, a Hybrid-Inverter is just an inverter that additonally contains a battery charger.

Also, to best of ma knowledge, that in-built charger inside that hybrid-inverter, often times, isn't capable of fully recharging your battery regularly.

Also, to best of ma knowledge, when something bad happens to that inverter, that battery charger is automatically affected. Reason why I love things dedicated so a fault on one, doesn't prevent me from using the other.

Also, to best of ma knowledge, with a hybrid inverter, it's difficult UPGRADING one, without forceFully upgrading the other.

Also, to best of my knowledgge, upgrading from 2.5KVa inverter to 3KVa inverter doesn't make much sense as sooner, than later, you would have reason for another upgrade. why not upgrade from 2.5KVa to say 5KVa or above ?

Also, to best of ma knowledge...

obitobe:
I need to ask, I plan on upgrading my inverter from a non-hybrid 2.5KVA to either a 3.0 or 3.6KVA hybrid inverter, but my questions are apart from taking additional loads,

1. does a hybrid inverter help to speed charging time for a flood lead acid battery for this range of capacity.

2. for those using hybrid inverter with flood lead acid battery, what is your experience like.

Please I need your expertise here.

I will be waiting for feedbacks.

yemi2plus:


Talking about upgrades, are there 5KVA (or above) 24V non-hybrid inverter systems?

Dam5reey:


What's your definition of Non hybrid and Hybrid... ? Non hybrid- without internal Solar Charge controller, Hybrid- with Internal Solar Charge controller.

What's your current setup, how do you charge..

My own definition of Hybrid is that it has.
Solar Charge Controller inbuilt. In addition to the AC charger..
In essence the charging Algorithm is the same.

1. about Speed charging.. this depends on many factors.
What determines the speed is the current you are charging with.

Provide more details for further clarification

olopan:
2 pole 40A AC MCB -4,000

2 pole 160A DC MCCB -54,000 (different from MCB, please check for difference between MCB and MCCB)

BOTH breakers are FEEO.

Dam5reey:


Yes, mostly transformers based 24V 5kva, 6kva..
But it's recommended to go 48V once you pass the 3.5KW.

bassdow:
bros no vex say we do overSabi derail your question.

What are you using to charge

1. external battery charger
2. inverter
3. solar panel
4...

yemi2plus:


Sadly, my lithium battery is 24V. Going 48V means I have to change battery too.

Is there any [b]reason it is recommended to go 48V [/b]once one passes the 3.5KW range?

obitobe:
My setup,
-2.7kwp of panel
-solar Charge controller 60A (external)
-2.5KVA transformer inverter (Afripower)
- 4 flood lead acid batteries( 12v, 220AH)

Dam5reey:


Hybrid are more efficient if you are using Grid and Solar to charge. It save your electricity bills if you are metered.
It will do the same job as a separate Controller.

Recommended charging current is like 20A for these set up. Which I believe your 2.7kwp is capable of.

Considering you have flooded battery.. only way to increase speed is increase the charging current.. you may have to top the water from time to time.

Dam5reey:


Better efficiency.. overall as the current draw is lower at 48V.

If your 24V bank is sufficient then upgrade only the inverter..
There is an advert for Snadi 5.5kva 24V few pages back
Felicity also have 5kva 24V.

FEGEITOK:


The MCCB is several times higher than the MCB

Researched it.