₦airaland Forum

microgiant:
The sketch is for regular batteries, which i already know from reading this thread.

Please, see sketch attached, as you are aware the LiFePo4 brand has discharge and charge lines separate discharge lines are in series, giving 24V which is clear to me.

My question is should i connect the charging lines to the PWM CC parallel as in my sketch or I also have to connect them in series like the discharge lines.

Note the batteries comes with separate lines unlike regular batteries with only one for charging and discharging.

Thanks for your response.

microgiant:
I mentioned 4 earlier and asked if it can be connected in series/parallel. You confirmed it can be done, which I believe is for the discharge line to make it 24V for use with a 24V inverter/UPS.

You also confirmed it can be charged with solar using a PWM CC which is why I purchased it (PWM CC). My question now is since the battery has separate charge and discharge cables, how do i connect the two batteries to the PWM CC? Note: I intend to connect in series for 24V output.

I also mentioned that one is a used battery which you also advised against using it, otherwise my initial intention was to parallel and series 2S2P.

Thanks for you support.

microgiant:
Hello GeorgeD long time. I am trying to go into a kind of mini solar.

@dishtech

I got the PWM CC 12V/24V 60A. see pictures attached. My questions are

1. How do I connect the wires (a) parallel to the PWM CC, or (b) series? Note: batteries are LiFePo4.
2. Can I use a 1500VA MGE UPS?

Penuelseun:
why don't you use an automotive relay, like this type rated for 30amps

BetaTechnicians:
The sort of paralleling you've done isn't really standard though it is yet to fail, the relays are not "sucking in" amps so paralleling them doesn't mean they'll share the load during breaking of the circuit, one could even trip before the other.
It is better and safer you disconnect your load, you can still use the light load of your pwm with this contactor.
TOCT1 2P 25A DC 12V 24V coil 220V/230V 50/60HZ Din rail Household ac Modular contactor 2NO
https://s.click.aliexpress.com/e/33cTtEw4

BetaTechnicians:
I understand that the pwm has a cutoff point which works with it's light load output which you use as a signal, how expensive is that pwm?
Meanwhile What are you disconnecting, is it your inverter output or the battery supply to the inverter?
Also, I do not understand the part of paralleling relays

BetaTechnicians:
OK, I can see those relays, so the pwm cc sends a signal to them?

BetaTechnicians:
Mind sharing how you achieved this?

BetaTechnicians:
Mind sharing how you achieved this?

olatade:
Please who has an idea of what the low voltage cut-off of a 12 volt luminous hybrid inverter would be?

ceaser:
Now I'm seriously having second thoughts about DIYing those lithium I have stored up. First I didn't even store them in the main house but in a shed outside. Second, they are all neatly arranged inside a nylon wrap (in fours), no metal shrapnel or screws are located anywhere near it. Haba! Na wa for Lithium o.

If I will go ahead with the diy pack, I must first get a welder to make a metal container and na for inside that I go put am. I cannor come and be having heart attack.

ceaser:
@ Dishtech.
I feel you could help to repair a damaged 500 watts/24v PSW inverter. Shebi?

generationz:
Which do you think is better

A 48ah lifepo4 battery or a 100ah deep cycle battery?

microgiant:
What will you advice on this.

https://www./suoer-3000-watts-solar-inverter-3000kva-31405507.html

generationz:
Please where did you get the lifepo4 batteries?


Also, did you remodify the stabilizer or just used it like that?

microgiant:
Thanks for your prompt response.

Please note that the batteries are designed for laptop. It comes with an adapter for charging with a different connection, another positive and negative cable out with adapter connection laptop power socket and adapter with printer socket.

I don't know if it is the same type as yours.

lexi28:
hi, quick question.
does your pwm controller charge the batteries adequately?

I guess you connected the batteries in series to match the 250w panel (which is a 24v panel). are your batteries 3s or 4s?

the 250wp has Imp of about 7amps? how long does it take for your batteries to charge.

thanks.

microgiant:
Please, I have some questions,

1. Can this battery be connected in series and/or parallel?

2. Are you changing directly (i.e. not using the follow come charger) from solar panel to PWM CC to battery?

3. Please, can you spare some time to make a sketch diagram of the connection?

I have one(1) used and three(3) new batteries which have not been utilized, and hope you will help me use it, especially the solar charging aspect. Thanks.

generationz:
Thanks so much.

This your inverter is strong o

I envy you guys that can just couple things together and get what you want. All those wires dey fear me. Make I no go burn house down.



Please, help a sister out where did you get the batteries?


I believe I can use a. Ups for this.

NiyiOmoIyunade:
Please I am interested in cheap LifeP04 batteries for an experiment - are you able to supply me some please?

How can I reach you?

Thanks
Sorry I didn't sale, I bought it here in Abuja but after I discovered that it was good battery went back to buy more but could not find any more but you can ask people from Lagos about that.

generationz:
Please I need advise on how to go about setting up a solar system with panels, inverter, battery and all for not more than 70k

It's just for a laptop and a phone. Thanks.

Please if you know where I can get new or fairly used products to fit my budget it would be of great help.

harizonal123:
3 weeks old. For now charging very well but the bulk charge value is set at 14.2v and its not adjustable. Which I think it's a little high. Will change it as soon as I have money to do so

olawaleejiko:
pls how do i combine nigcomsat with multitv and eutelsat 16a. Which one is primary and secondary, how do i attach d lnbs. Pics will help in this situation, thx.

Dishtech:
Sorry for coming late! For those that need the calculation here i come! From your previous information the dish size is 2.4m (240cm) and the depth is 37.5cm. Looking at my diagram (fig.1 and fig.2), from parabola calculation, X= r*r/4F
where X is the depth of the dish,
r is the radius = 240/2 =120cm
F is the focal length.
substituting in the formula,
37.5=120*120/4F, 37.5*4F=14400, 150F=14400
F=14400/150, F=96cm
From Pythagoras,
Hypotenuse (H) square = Opposite (f) square + Adjacent (r) square
i.e, H*H = f*f + r*r, where f = F-X
f = 96-37.5 = 58.5
H^2 = 58.5*58.5 + 120*120,
= 3422.25 +14400
H^2 = 17822.25
H = Square root of 17822.25
H = 133.5cm. This is assume length of tripod.
but looking at the second diagram, to be continue....

abdool09:
sorry for the late reply, let me measure and wil get bck to you..,...........
its 14.5 inches/ 37.5 cm.

abdool09:
please i still need help here.

brainhack:
Good day people, i am quite new to this. I need Gurus in the house to please answer some questions.

1) i have a TV samsung J6300, the specs says it has DVB-T2 tuner. can i get free-to-air channels on it using just a dish or there is something additional i need?

2) if i decide to get a DSTV decorder for example, can i use this connection (DSTv come with a dish) to get other free-to-air Channels (channels not on DSTV)?