₦airaland Forum

kanuchi: Hello house, who wants a telecommunication batteries? 78amp, 82amp, 180amp. These batteries are good reliable and more years designed life. The batteries are here in port harcourt such as: cosolight and northstar products u.s made. You can contact me for purchase on: 08060374072. or email on: mynewgreenenergy@gmail.com. Remeber the weight of these batteries are differs from our normal batteries. The pric of 78amp is 38k, 78amp 35k, 180amp 57k. 16months warranty. Please note this prices are not included with your shipping cost. Thanks.

hi,
pls does it have a manufactures date on it, if it does what is the date

thanks

ile naira: @akanniade, congrats. The panel setup looks very professional. The battery bank looks good too. What the ah rating?

@akanniade : very nice...

abunafiu: a word from the elders. what's battery equalization all about. i believe my batteries are sealed and according to documents i have re d online, sealed batteries need no equalization. i did enabled equalization on my mppt . what do you have to say abt that. happy democracy day.

pls hurry, and remove that setting.

u can only equalize flooded battery.

NB: there is some sort of equalization that can be done on sealed battery, all i think it does is boost it just and extra 1 volt(dc) above the regular charge, but you have to make sure you set the dip switch as stated in your manual, assuming you are using Morningstar, for other controllers i have no idea

Akanniade: Just started a new installation.
5kw
20× 250watts(polycrystalline panels)
Flexmax 80 charge controller.
36volts/3.6kw tripplite inverter.
2v/500ah battery(not delivered yet).

Bless u, that's the way to go

olarevo: It's 48v/45ah

Knock knock

olarevo: Thank God I got my e Tracer MPPT solar charge controller. Today
Pictures of my revised installation to follow soon.

Good one

abunafiu: oga earthrealm, kindly share what ur experience was like when u were using toks tellecomm batts.
My current battery bank consist of toks tell batts.
and i am enjoyin them....Before i paid for them, i was allowed to use for 1 week.
what i did was that i charged the batts to float(26.9 to 27.0V) with PHCN, i then disconnected the batts for 3 days, the batts maintained a voltage of 26.5 after 3days so i was convinced the batts were still good. On loading the batts, the volatge at d terminals read 25.6 which is more than 100% soc.
So sir, kindly share ur experience because economy hard these days o....Expecting u sir.

My friends and brothers in the green world, pls pls try and buy new batteries, not just new batteries, but batteries that have a date manufacture, from my little experience, all this batteries u call telco batteries, the are called front access batteries, does not mean the are that much better than the regular square looking batteries.

Now lets talk about the very hyped batteries that is so called "telco batteries", this batteries are manufactured you sit on the shelf for 5years meaning that if u use or not, the should expire just about 5years, so how do u know when a ressseller has imported the ones that have been sitting on the shelf for 4years, the only way is to know from they date of manufacture.

Now this so called "telco batteries" also have the amount if time you can circle them based on DOD "dept of discharge" like has been discussed in this group before, 50% is always the industry standard, but we never adhere to it as explained by my Oga Goege_D, for telco batteries at best with 50% u should re cycle about 1500 max and I am being lenient with this number, the only reason toks front access batteries last a bit more for us is cause all this abstruse have DOD of about 20% or less, the likes of Mtn Glo airtel etc, change this batteries after a few years, and the hardly discharge the batteries, mainly for change over, so we rush to buy them cause the are cheap.

A true test on those batteries when ever u get them, connect like ur home iron or anything that is above 2000watts for about 20 to 30 mins and see how it works, if it survives it, then know that the battery is manageable for a while.

Finally pls pls pls buy new and dated batteries, always try not to build on a wrong foundation when it comes to renewable.

Just my 2cent

Excuse my typo, I dey use my phone to type

earthrealm: i think you u can, no biigie..

right now..i only have 2units of 12v 200ah powering my 24v inverter...then recently i noticed that my usage hrs dropped drastically to less than 2hrs...even when fully charged, i investigated and discovered thst one of my batteries voltage is only 10v...implying that the battery is dead!..so what i did was hook up another 12v non charging inverter to the + & - terminals of the remaining good battery, while still leaving the 2 batteries in series and charging it with the 24v inverter....................this is a short term procedure as am waiting to get some time off from work so i can go to lagos and buy 2 brand new telcom batteries from the arthur guy......

and this my starnge connection has been serving me for abt 3wks now.

Sorry would not like to burst your bobble, but u are killing your battery, u see now that ur battery is dead, the dead battery is killing the second one, and u are killing it as well by draining it, my advice is when u buy a new battery buy two at once

My 2cent

abunafiu: I dont know if this is right,
Can i connect a second inverter[b](non charging type)[/b] to my set up
such that i can reduce load on my 1.5KVA genius. Its power source shall be
my battery bank.
This means two inverters on a single battery bank but only one of the inverters can charge.

Yes u can, not a problem

deeplo: @ Totalgreen,
1.5kva..... 12v,200AH...24v
3.5kva..... 12v,200AH...48v

for a start, how many solar panel would recommend i could start with for the set up above,
including MPPT Amps rate.
Thank you

Hi,
Sorry I delayed in reply
3.5kva..... 12v,200AH...48v
I like doing my calc from battery up, I assume u have 2 battery for this setup.
Rules .. For long use of battery, u should not charge a battery faster than 5hrs, so 200/5 is 40 amps, so your maximum charge should be 40amps

Since u requested to do mppt, I would recommend the Morningstar mppt 45amps version, for 24volts the maximum array u can use is 1200watts, so if u do ur numbers here.
For me I do sharp panels 220watts 24v, so u will require 6 of this panels, 2seeies 3strings

3.5kva..... 12v,200AH...48v
doing my calc from battery up, I assume u have 4 battery for this setup.
Rules .. For long use of battery, u should not charge a battery faster than 5hrs, so 200/5 is 40 amps, so your maximum charge should be 40amps

Since u requested to do mppt, I would recommend the Morningstar mppt 45amps version, for 48volts the maximum array u can use is 2400watts, so if u do ur numbers here.
For me I do sharp panels 220watts 24v, so u will require 9 of this panels, 3seeies 4strings

My recommendation for future expansion on the battery is to buy the Morningstar mppt 60amps, so when u increase your battery and voltage system, it will be there for u.

deeplo: Please i need your help on these setup of mine.
I have 2 setups of inverter, a 24v-1.5kva (home) and 48v-3.5kva (office) both Sukam.

1. I need a solar panel connection (either in series or parallel or in combination of both) suitable for the setup above.

2. Number of solar panel watt ie. 100w, 120, 200 or 250 suitable for this ( i read mono crystalline is good)

3. MPPT Amps type ie. 20, 30 or 45 ( i read morning star, tristar and secta are among the good ones)

4. Wires... i guess 6mm is okay?

I l already know how to manage battery consumption and dod.
I will appreciate any additional information that could be added.


Thank you

How many batteries do u have, and what's the ratings

abunafiu: Need additional lectures...
I usually discharge my batteries to 24.5V(50% soc) daily, i noticed the following:
Charging stage 1: MPPT
Charging stage 2: ABSORBTION
Charging stage 3: FLOAT

When is BULK suppose to set in, or am i experiencing a normal thing.
I downloaded the MSVIEW software but i was unable to connect the controller to my PC using ETHERNET.
I downloaded one TRISTAR NETWORKING COMPANION and i saw directions but i still dont get it.
I need my OATTs(oga@d tops) to put me tru.


Also, i need to know why the controller displays HVD while charging with PHCN and solar simultaneously...Although the HVD comes after about 2-3 hrs of charging and bright sun.
Am i suppose to modify anything,on my setup because i have disconnected PHCN totally for the past 3-4 days.
I also read some that one can add a switch that can simultaneously cut power TO and FROM the controller as well as the PV, i now came up with the idea of the KNIFE SWITCH(people use often as change over). If connected prperly, i think this can disconnect the PV and BATTERY from the controller simultaneously.
I need suggestions pls.

I will try here, why u don't see bulk is cause u are using mppt controller, only the regular non mppt controller will show u bulk, basically look at the mppt status as BULK

Nepa and charge controller at the same time, the system is telling u that ur combine charge voltage it's too high HVD "high voltage disconnect", in this case the controller will shut down must of its charging current (I guess).

I don't know if that helps

Akanniade: @abunafiu2
Congrats and welcome to the club. One point though; you need to totally empty those gen and kegs of fuel if you must keep it near your setup.

Nice innovation;the way you installed your panels.

Like to ask where the sun is coming grime, is it from the big roof to the small roof, or is it on the line of the gutter of the roof, I hope it's on the line of the gutter, if not u will loose a lot of energy from sunrise and sunset, u know mppt loves cool temp.

Hope this post would not be hidden

Nice

[quote author=George_D]hello abunafiu,
congratulations! you finally pulled through with your plans and now you've become
a bonafide member of the solar club!

this is just the beginning of endless solar possibilities!

cheers![/quote]Congrats
Send pics of the controller as well

all my post have been hidden, i wonder why

alstacs: Good day here the great ones.
There is firm that won me over from Cyberpower....www.opti-solar.com. There is a company in abuja that markets these inverters.
Kindly help check these inverters. I learnt some of them have in built charge controller.
Does anyone know anything about these inverters?

hi,
its always cool when we bump into something new, but from my little take, its always good to look for users review, basically let others take the plunge, then only then will u know how good it is under "NAIJA" conditions, ie bad generators, wrong voltage, wrong frequency, erratic nepa.

my little take on the issue

a bit hush hush here.

[quote author=George_D]hello totalgreen,
kindly shoot me your email and phone number. i want to confirm something.



thanks, expecting.[/quote]my oga, u got mail

[quote author=George_D]totalgreen,
yes, you're right. other factors may have played a part in my not getting as much current as yours for the same wattage.
notice that the battery temp. on my end seems to be higher than yours. temperature compensation may be playing a role
here i guess.

and for installation, i think my rooftop inclination could be contributing to my panels not putting out enough juice for their power rating.[/quote]thanks....

[quote author=George_D]quite interesting no doubt.

your installation must be very optimal for you to have almost nameplate power available
at your controller.

although i guess the sunny weather these days is a big bonus for all of us solar enthusiasts.[/quote]well almost optimal, since its on my water stand, but the sharp products really helps, i noticed one of your pics for morningstar reading, i monitored mine at that same reading and i think i had about 2amps more at the same wattage, but i was not too sure if there were other external forces at yours or mine, let me dig back at the pics and compare, i really would like to know why the difference, just for my knowledge.

if u have any idea's i would love to "absorb"

earthrealm: 3 series and 5 strings?...sorry for all my frequent msgs but am trying to understand.
i tot it shud be 3 series n 4 strings?....since they r 12 in nos...3units in series gives u min of 72v, then since you have 4 strings..that implies u have min 72v in 4 strings parallel?....i dont understand ur 5 strings thing..since u hv just 12 panels.
pls educate me, am a newbie

sorry just did copy and paste, was to correct u on the 12 unit.
i have 15 x 220watts sharp panels
3 series in 5 strings
so i have a total of 3300 watts running into the controller

earthrealm: @totalgreen...wow! 12 units of 250watss panel!!..thats a huge investment o.
so r your panles 24v or 12v?..did you wire them in series?..whats the totalvoltage output from the panels?....ur charge controller it appears its 60amp mmpt

1. 12 units of 220watss.
2. 24v
3. 3 series and 5 strings
4. attached a pic of my array
5. yes 60amp mmpt

[quote author=George_D]totalgreen,
things are really looking up at your end especially with a solar harvest like that.

a word of caution though: you should start thinking seriously about getting a second
charge controller as you're already maxing out the capacity of your tristar.

at 55a you're racking up about 92 percent capacity and any more increase in array current
may not bode well for the controller.

you could try splitting your array into two strings (like i did with mine) and then installing
a second charge controller for added capacity.

just my thoughts.[/quote]two pics just to show when the morningstar starts to do its "current limiting", i have 3300 watts on that controller, 15 x 220 watt sharp.... nice of the controller to use up all the wattage "almost" available.

[quote author=George_D]totalgreen,
things are really looking up at your end especially with a solar harvest like that.

a word of caution though: you should start thinking seriously about getting a second
charge controller as you're already maxing out the capacity of your tristar.

at 55a you're racking up about 92 percent capacity and any more increase in array current
may not bode well for the controller.

you could try splitting your array into two strings (like i did with mine) and then installing
a second charge controller for added capacity. its

just my thoughts.[/quote]George_D: thanks for the info, the great thing about the morningstar is, even u oversize the panel wattage, but I wouldn't as it is just a waste of money. The controller can only down convert 60 amps and no more.

but i usually have the arrays on 2 controllers like you advice, i lost one carelessly.

thanks

earthrealm: @total green, thanks for the input on the thread above
.
my own problem is this...i want to install 200amphr x 2 units batteries plus 2 x 250watts [] solar panles, for my folks in the village..just for lights/tv/fan....my question is...do i really need an mmpt charge controller...considering the price difference when compard to pwm charge controller....the only forseeable upgrade i see in the future is increasing the battery bank to 600 or 800ah and maybe buying 2 more units of 250watts panel[if necessary], so factoring all this in.....is it woth it shelling out abt 70k for the 45amp morning start mppt charge controller.........or should i just buy the cheaper pwm charge controller

I would say yes, but remember that u don't have to buy morningstar, another good brand at low amp is steca mppt 20amps, but since u are looking at upgrading, u may need to still buy Morningstar maybe the 40amps version, take the dive on the Morningstar, no regrets on the mppt.

Look at it this way, u are buying 2 x 250watts, and hope to buy like 2 more panels later, the mppt gives u more current over time than having 2 more panels with ur regular controller... So u see the mppt will buy out the 2 new panels over time, and u still be enjoying more buy outs over time...

So please do mppt!

i wish every day can be like this

badaru1: @George D

Please I need recommendation on good battery to buy for inverter,I have been buying batteries but I have been able to get any that last for more 1 and 1/2 years. I need atleast 2 200AH batteries

if cash is not too much of an issue, i would recommend you buy the Trojan T105, they are flooded, you can always equalize them when you see that the efficiency has dropped, but if you cannot stand the maintenance stress then do the regular sealed like oga at the top has recommended..

2cent

earthrealm: if i get u right..u are using 2v 500amphr batteries?..if yes..then it implies that u have 12 pieces of the 2v battery connected in series?. doing the maths 24 x 500 = 12000w factoring in losses/effieciency factor of 0.8 .implies that ur total available wattage is 9600watthr. so divide this 9600/[ur load in watts] = inverter run time in hrs, lemme assume u hv a total of 600watss load..then ur inverter will work only for 16hrs b4 it needs recharge.

on the issue of solar panels assuming u hv 10hrs sunlight per day thus ur total capacity/10 = 960w, so ur combined solar panel need is 960w, adding efficiency factor of 0.8 implies that u need 1200watts of solar panel...so the minimum nos of panels u need is 200w x 6 units solar panel, or 250w x 5 units solar panel etc....
note: this is the minimum nos of panels you need...its always advisable to have more than the minimum.

other members pls feel free 2 correct me if am wrong

Well my view, don't look at it that way... U will get the figures wrong..

Look at it from the battery up...

You have 500amp battery at 24vdc setup, right...

So let's say u have sun at full for 5hrs a day, it will take 100amp per hour to charge the battery to full. Assumption that the battery is flat.

Assume u are using morningstar ts mppt 60, u will need 2 of this, filled up to the top, for 24v each controller should have max of 1600w each.

So u need a total of 3200watts of panel, u can do the numbers from here.

So if u assume 10hrs u will only need one controller. From my little experience always think 5hrs

Like I always say, I stand to be corrected