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earthrealm:
mordern inverters usually have adjustable batt type selector switch, with accompanying voltage setpoints, its only old inverters that dont hv such, my 1.5kva luminous does hv, but am not bothered cos am using it in an offgrid enviroment, on fla batts. where phcn comes once in months

what is your primary charging source?..solar or phcn?...the setpoint of the cc is user editable, and done on the cc software, there are so many unknowns in your issue, to be able to pinpoint the cause of failure. discuss with ur installer and chart a way forward. upload a pic of your battery lets us see, is it the 2v 500ah type?. this shud be a guide to all newbiew..try to avoid buying inverters without batt type selector switch/clearly defined voltage setpoints,...and request for agm, not gel

lol, for real bro, i really do feel like a newbie, even though I am an electrical engineer. really goes to show how valuable hands-on EXPERIENCE is in any subject matter, as opposed to the limited theoretical scenarios one envisions.

my primary charging source is gen/solar. "phcn" can't really be considered, cause it isn't a constant. it's just sad bro, cause we have light every single day from 10p.m-7a.m with the gen. The solar is suppose to take over from 7a.m-10p.m and it's beyond depressing that 2000watts of solar and 4 12v 200ah batteries can't accomplish that on 500 watts of load.

Guess the inverter might also be an issue though as honestly, i have never seen it charge beyond 13.8v. just seems like wasted money all around, well, i guess except for the solar panels




please dude, i need some more advice before you go to sleep, I can send you some orijin bro.

so now, I went back and reconnected the charge controller negative terminal to the battery and the controller came on and wasn't stuck, like it was when it was sending straight vmp to my battery without modulation. do you think it has been fixed miracles still happen na, abi

i plan on leaving it like this, then checking the battery voltage from sunrise - 7;30a.m before i have to leave my house, but the pv voltage might not be at its max by then. God help me that i don't come back to a burnt house.

when the controller failed and was sending vmp (when i disconnected the controller from the batteries without disconnecting the solar input from the controller), the screen of the controller was just stuck, like displaying all numbers, i couldn't click on anything at all, couldn't see battery voltage, pv voltage... nothing.

will post the batteries later

sharks776:
Your CC is most likely tossed, same thing happened to me few months ago.

chai, so do you now have a breaker from your panels to your cc?

3 and 4

after the system shutdown, these are the battery voltages of all four

makavele:
Should have disconnected solar first.
Your CC is fried and will not regulate voltage again
Disconnect from battery else battery will roast too

I should have come here to ask first before thinking this was a quick and simple procedure, sigh.

I disconnected the negative terminal of the charge controller cable from the battery and wrapped it up, the positive is still on there though, but i don't think that's an issue.

DMerciful:
48v battery system fails this way unless you have multiple string of 48v so that each string might be doing 5A else imbalance sets in even with balancers..
My reco is to limit our systems to 12v or 24v unless you have enuf money for multiple battery strings.
If you have money go lithium and have peace of mind

but 10amps on a 12v 200ah battery should be very low though, don't you think?

5 amps is like super small per 200ah battery, thats like 60 watts per battery, 240 watts for the 48v system. That draw is too small for our application and batteries are so expensive and not even trust worthy for me to think about having 8 batteries in a single bank. I would rather have 2 inverters, with 4 batteries each to minimize bank failure, since people always say that you have to replace the whole bank if one goes bad. Honestly, I hate batteries right now men

according to the chart below, i should be able to get around 10 hours at 10amps(0.05c) before the battery hits 50% dod, but real life has been way way different. That 10 hours would be more than enough for our application if only it applied to real life.

earthrealm:
check the battery for the cycle and standby voltages, then compare same with ur inverter and cc charging voltage setpoints.
ur inverter..does it have batt type selector switch? if yes..am assuming you selected gel batts, did the voltage setpoints jive with the oem batt sepoints?...same goes for your charge conroller

The inverter has no setpoint options

Not sure about the charge controller, but funny enough, the battery voltage never goes beyond 56v, not that I've seen, even though the battery cycle voltage states 14.4-15v and float of around 13.6-13.8v.

So i guess it's expensive inverters that have setpoints We also have a 24v prag inverter and that one doesn't have setpoints either, the only settings i see on the prag are charging current options, 10A/20A, but that one takes the batteries to as high as 14.8 per battery, before settling back to float, which this 48v (soccer) inverter has never done.

Guess I need to call the installer back? This is just a sad day men, but, who is alive today without problems? I will have to face them this week.

earthrealm:
hmmm, are you a diy person?... ur choice of cc is poor, not a common make, and based on that and the error you made that fried the cc, i may extrapolate and infer that you are not much knowledbagle about RE and may hv fired ur batts ignorantly due to wrong cc/setting. so b4 you
accuse ur batt seller of selling you substandard batts, ensure the fault isnt from you.

yeah, it is good is to charge each of them individually fully first. though its not a sure protection from batteries getting mismatched during use. ur best option is installing a battery balancer.

@trippledots : most 2v 500ah/800ah/1000ah batts are gel
quanta/long are the common agm batts
the batt type is usually written on the body of the batt

well the choice of cc was made my the installer, we just paid for the whole system, instead of paying for parts, so we had to deal with what he got.

As for experience, well, this stuff is all pretty basic. well i guess that sounds, weird, being that I made this cc error, but the more I think about it, the less sense it makes. When the batteries are full, the charge controller throttles charging current all the way down to zero, even in full sun, so why would it fry when the battery is disconnected isn't that open circuit similar to no current on a full battery

As for the battery, well the charging characteristics were met pretty closely. The CC would charge up to 56v daily, same with the inverter. So it was never overcharged. we just started losing capacity rapidly. I mean we have 2,000 watts of solar, electricity from 10-7a.m, 4 200ah batteries and just running 500 watts load continuous. I feel under these circumstances, that the battery should have lasted for years.

earthrealm:
wow, most cc cant handle the exceesive juice coming from the panels..if u disconnect the cc to batt connection..leaving the panel to cc connection on. its common knowledge here naaau, only a few cc makes can survive this error, my epsolar 60amp survived it...but i wudnt test fate next time, i may not be so fortunate
whats the make of urs?

men, i don't even know the name sef. like "Yamako" or some shh like that.

Sigh, are you for real though? something was telling me to wait till the sun goes down, but i had to disobey my gutt.

when the installer installed it, he didn't put a dc breaker between the solar panels and the charge controller. it would have been so easy to switch the solar off, if i had that.

i didn't know it was common knowledge here, sigh, should have been following this thread more closely.

wish i could afford another mppt at this time, like your EP, but, maaaan, sigh, wtf is all this bad luck though

I will just have to pick up a cheap pwm in the mean time.


Quick question, whenever you install your new battery bank, do you charge the batteries individually first before you series/parallel them I'm thinking maybe these ones where imbalanced from the start.

Please house, please tell me, did I fry my charge controller?

Wanted to take out the batteries, so I disconnected the charge controller from the battery, but when I reconnected it, the screen was just static.

Then I noticed that my battery voltage had climbed up to 67v which seems like direct panel voltage straight in to my battery.

Was I supposed to disconnect the solar from the charge controller before disconnecting the battery from the controller

so sad right now

efuro:
I mentioned about 2 years ago that batteries are the bane of RE in Nigeria.

First check if you're not the primary cause of early battery death because that same battery you claimed died under a year may yet be serving another customer much longer than 2 years.

Channel your anger towards SON and not the deallers. When a whole consignment is destroyed. Inferior batteries will gradually die out. Remember it is easier to get a replacement through SON than to save for new set of batteries which may also be substandard.

It is sad!

very sad indeed.

i only let it run flat(when the inverter beeps low battery), a couple of times.

Now when the inverter beeps low battery, i notice 3 batteries are at like 12.50v while the last one is reading 9v. why will one just die like that out of the blue

I wonder if we needed to charge them individually before placing them in series.

Now my charge controller has stopped working just now, as I decided to go fiddling with stuff. chai

Barezzi:

Hang him from his balls, and use it for target practice!

hehe, i'm telling you, im more than tempted to do just that

my gel batteries are dead in just under a year.

talk about depressing

don't know if i should call police for the niggga that sold this shhh to me

I'm driving on my own, police pull me over asking me stupid questions, yet they won't see people driving one way, buses stopping on the road...

If you drive a flashy car, expect even worse, as you will be pulled over everyday.

If you ever go to yankee, you'd see that police there obey all driving laws, to lead by example. Here, they will drive one way, run traffic lights, drive on lane markings...

Just from this simple example from everyday driving, we can see just how bad the so called force is.

We don't have police in Nigeria ��

In fact, we don't even have national security in Nigeria. If we are ever attacked by a foreign enemy, then it's a wrap!

Randy100:
Harsh but deserved punishment for the teacher. The boy will grow not to be a thief.

Please explain to me how that is a harsh punishment.

Still available

sold

italkpass:
What is the new price? I am in PH, how can I get it?

that's the price bro.

sorry, i really can't ship this out of lagos. do you have anyone in lagos that can come get it for you?

I downloaded "Battery Life Doctor" and attached is a screenshot of the report for the battery life.

As you can see, the battery is highly degraded, with less than 30% capacity life left.

I just don't want to take the risk of opening the iphone to change the battery as things may go wrong with these naija techs, but if you've done a battery change on an iphone 5 before, or you know someone who can do it right, then this may be the phone for you.

I downloaded "Battery Life Doctor" and attached is a screenshot of the report for the battery life.

As you can see, the battery is highly degraded, with less than 30% capacity life left.

I just don't want to take the risk of opening the iphone to change the battery as things may go wrong with these naija techs, but if you've done a battery change on an iphone 5 before, or you know someone who can do it right, then this may be the phone for you.

View pics in the tech market thread:

https://www.nairaland.com/4477203/iphone-5-64gb-sale-18k


Issues:
-Needs a new battery
-Needs an original charge cable