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Lithium Ion Solar Batteries / I Make Lithium Ion Batteries For Solar And Inverter Systems / Get Lithium Ion Battery Packs For Inverters (2) (3) (4)

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Re: Diy Lithium Ion Like-minds by sonickay(m): 2:34pm On Sep 04, 2024
Bros it has not since 2019 oo, out of about 10 people I installed solar system for using this 2kv inverter, its only one that had problem with it.

The lower 1kv and 500 which doesnt have regulating fans are quite awful though.
ajabani4allah:


Bro, that inverter is not strong enough to tolerate leaving it 24/7 on, it will spoil in no time. Get PSW sachet inverter for this
Re: Diy Lithium Ion Like-minds by capnies: 6:47pm On Sep 04, 2024
Please engineers if you have MPPT charge controller any need for buck converter
Re: Diy Lithium Ion Like-minds by Penuelseun(m): 6:27am On Sep 05, 2024
capnies:
Please engineers if you have MPPT charge controller any need for buck converter
What is the scenario like?
Re: Diy Lithium Ion Like-minds by officialfestus(m): 9:48am On Sep 05, 2024
My progess so far on my diy indoor and outdoor power station.
Remains to complete it are.
Inverter.
Case.

1 Like

Re: Diy Lithium Ion Like-minds by dollarnaira: 11:21am On Sep 05, 2024
officialfestus:
My progess so far on my diy indoor and outdoor power station.
Remains to complete it are.
Inverter.
Case.

Oga u don turn pro ooo.
Pls let us arrest this guy grin grin grin
Re: Diy Lithium Ion Like-minds by officialfestus(m): 8:41pm On Sep 05, 2024
dollarnaira:


Oga u don turn pro ooo.
Pls let us arrest this guy grin grin grin
grin grin
Greetings my boss, na una teach me this diy stuff oh.
Re: Diy Lithium Ion Like-minds by officialfestus(m): 6:55pm On Sep 06, 2024
Automatic change over in progress.

2 Likes

Re: Diy Lithium Ion Like-minds by officialfestus(m): 6:58pm On Sep 06, 2024
My 24v easun 3kw arrived today, tested it with my 24v 7s 2.5kwh li-ion pack.
Battery was at 28v, plugged a steam iron, and voltage drop to 26.9v.

1 Like

Re: Diy Lithium Ion Like-minds by ajabani4allah(m): 9:10pm On Sep 06, 2024
sonickay:
Well, I this one appears to be over strong. I have been using this inverter for extended period of time on a daily basis since 2019, now on Starlink for 12hrs+ per day for over 3months and waiting for it to spoil cos i dont believe in finixing something if it snt broken.

Btw, do you have used PSW Inveeter for sale?

This is the one i have below I am still using the charger though

Re: Diy Lithium Ion Like-minds by capnies: 6:44pm On Sep 07, 2024
Penuelseun:
What is the scenario like?

Thanks I want to connect solar panel through MPPT charge controller to my li ion battery pack
Re: Diy Lithium Ion Like-minds by Penuelseun(m): 12:08am On Sep 08, 2024
capnies:


Thanks I want to connect solar panel through MPPT charge controller to my li ion battery pack
You don't need a buck converter if your charge controller can go as low as your battery absorb voltage, is your battery 12v, 24v or 48v?
Re: Diy Lithium Ion Like-minds by Intellab(m): 3:32pm On Sep 09, 2024
Penuelseun:
You don't need a buck converter if your charge controller can go as low as your battery absorb voltage, is your battery 12v, 24v or 48v?
If I connect the built battery pack to solar charge controller, will my solar panel be able to charge it?
Re: Diy Lithium Ion Like-minds by Penuelseun(m): 4:42pm On Sep 09, 2024
Intellab:

If I connect the built battery pack to solar charge controller, will my solar panel be able to charge it?
Battery voltage? Solar panel voltage? Charge controller type?
Re: Diy Lithium Ion Like-minds by capnies: 5:08pm On Sep 09, 2024
Penuelseun:
You don't need a buck converter if your charge controller can go as low as your battery absorb voltage, is your battery 12v, 24v or 48v?

Thanks, my battery is 12v ie 3s
Re: Diy Lithium Ion Like-minds by Penuelseun(m): 10:56am On Sep 10, 2024
capnies:


Thanks, my battery is 12v ie 3s
If your controller absorb voltage can go down to 12.6v, you are good to go, if not you need a buck converter
Re: Diy Lithium Ion Like-minds by capnies: 11:23am On Sep 10, 2024
Penuelseun:
If your controller absorb voltage can go down to 12.6v, you are good to go, if not you need a buck converter

Thank you very much let me check
Re: Diy Lithium Ion Like-minds by mctfopt: 8:55pm On Sep 10, 2024
officialfestus:
My progess so far on my diy indoor and outdoor power station.
Remains to complete it are.
Inverter.
Case.

This looks nice. Add a thicker insulation eg shrink wrap around it for further insulation. Well done.

1 Like

Re: Diy Lithium Ion Like-minds by Southboy(m): 11:44pm On Sep 10, 2024
Who has 3s 60A BMS for sell or if you know where I can get it please let me know.
Re: Diy Lithium Ion Like-minds by dollarnaira: 5:56am On Sep 11, 2024
Southboy:
Who has 3s 60A BMS for sell or if you know where I can get it please let me know.
Konga
Re: Diy Lithium Ion Like-minds by Ferdiwar: 7:31am On Sep 11, 2024
You can achieve this by replacing the wires from inverter output with the wires from inverter ON switch at the relay connection.

ajabani4allah:


That part "put off the inverter" pls can you shed more light on this? I have a 10A 8pin DIY relay I am using but it can only transfer the load but not put off the inverter. Can the relay achieve this? I need something that can also put off the inverter when I am on grid to save my battery from ideal power consumption of the inverter
Re: Diy Lithium Ion Like-minds by Ferdiwar: 7:36am On Sep 11, 2024
It depends on what you intend to use it to achieve.

You can get the BMS from vendors here or AliExpress

Southboy:
I just got 360 pieces of 18650 batteries, please how many bms would you recommend I buy plus where can I get it. Thank you
Re: Diy Lithium Ion Like-minds by Southboy(m): 11:38am On Sep 11, 2024
Which vendor here sells BMS, I need it asap
Re: Diy Lithium Ion Like-minds by capnies: 11:40am On Sep 11, 2024
Southboy:
Which vendor here sells BMS, I need it asap

Visit Tetralogy my man
Re: Diy Lithium Ion Like-minds by officialfestus(m): 3:04pm On Sep 11, 2024
Southboy:
Who has 3s 60A BMS for sell or if you know where I can get it please let me know.
I have the 2way 60a balanced version bms.
Re: Diy Lithium Ion Like-minds by eghos12(m): 9:28pm On Sep 11, 2024
Please does exceeding the Total watts oof charge controller does damage to it. For example 12v is(260 watt) for 20amps CC. And you want to connect 300w to it will it affect it.
Re: Diy Lithium Ion Like-minds by Trippledots(m): 5:25am On Sep 13, 2024
Penuelseun:
How many cells do you have in series? Max charge voltage for 18650 cells 14s is 58.8, that is 4.2v × 14, but it is better to charge to 4.0v per cell to prolong the lifespan of your cells. Cut off should be 3.0v per cell which is 42v.

What if they are not 18650 cells? I saw a li-ion pack doing 57v top and 48v cutoff. What can be improved about that charging profile?
Re: Diy Lithium Ion Like-minds by Trippledots(m): 5:27am On Sep 13, 2024
capnies:
Please engineers if you have MPPT charge controller any need for buck converter

An MPPT is a buck converter at its core. No need.
Re: Diy Lithium Ion Like-minds by Trippledots(m): 5:29am On Sep 13, 2024
Intellab:

If I connect the built battery pack to solar charge controller, will my solar panel be able to charge it?

Bro, be careful around li-ion packs of. They are unforgiving if abused.
Re: Diy Lithium Ion Like-minds by dollarnaira: 9:33pm On Sep 13, 2024
Trippledots:


What if they are not 18650 cells? I saw a li-ion pack doing 57v top and 48v cutoff. What can be improved about that charging profile?

14×4.2=58.8v max ( decreases lifespan though)
3×14 = 42v cutoff (38.08v for my trusted Samsung 26J).

1 Like

Re: Diy Lithium Ion Like-minds by capnies: 2:11pm On Sep 14, 2024
Trippledots:


An MPPT is a buck converter at its core. No need.

THANKS SO MUCH I'VE BEEN EXPECTING THIS THANKS AGAIN

1 Like

Re: Diy Lithium Ion Like-minds by brightk(m): 11:02pm On Sep 14, 2024
dollarnaira:


14×4.2=58.8v max ( decreases lifespan though)
3×14 = 42v cutoff (38.08v for my trusted Samsung 26J).
my cut off na 43.4 sef on li ion builds
Re: Diy Lithium Ion Like-minds by Penuelseun(m): 11:46pm On Sep 14, 2024
Trippledots:


What if they are not 18650 cells? I saw a li-ion pack doing 57v top and 48v cutoff. What can be improved about that charging profile?
that is 4.0v per cell, very good charging profile if you want your cells to last long

1 Like

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