chris81964:


I don't do the Indian brands. So I am not familiar with them and can't give a qualified opinion. The reason why they list cycle uses on batteries is so that you know the maximum and minimum voltage you can charge the batteries to. When they are not charged properly sulfation occurs and there is no particular manner in which it occurs. Differences in tightness of your lug, distance of battery to the charge source, imperfections in the battery can be the reason why one fails before the other.

I attended a class over the weekend and the instructor told us that you can equalize your sealed batteries. Give that a try and see if it will bring it back. At 12 Volts your battery is flat. It is beyond flat at 11 volts. You might want to set the alarm for 11.5 Volts.

Run the equalization and get a desulfator. The instructor swore by them. If the batteries are not too far gone you might be able to rescue them with the suggestion that I made.

kiekie1:
HURRY ! HURRY !! DISCOUNT SALES !!!!!!

USA TROJAN L16-RE Premium Line Flooded Lead Acid Battery 6V (410AH)20hr Rate ..... @ 75k

USA TROJAN J185P-AC Signature Line Flooded Lead-Acid Battery 12V (205AH) 20hr Rate .... "NOW IN STOCK"....@65k

Solarworld mono panels 255w ,260w,265w "made in Germany" etc now in stock at very discounted prices.........

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POLY SOLAR PANEL:
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MONO SOLAR PANEL:
80W N12000. 100W N15000. 110W N15500. 120W N18000. 130W 20000.180W N28000.

Latest model 10kva wall mount servo stab (AC input range 80V-270V)....... @50k

Must power star light inverters with charge current adjustable variable,LCD display,wall mount,remote port,load wattage display,flooded/gel/agm battery settings,battery equalisation and desulphation settings...
1kw 12v =50k
1.5kw 12v =60k
2kw 12v =75k
2kw 24v =75k
3kw"4kva" 24v =120k
4kw 24v/48v =140k
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6kw"7.5kva"24/48v=210k
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10kw 96v. =380k

Must power inverter boards ...@25k

Programmable timer switch with LCD display 220vac 16a........ @4k

The EP Solar "I TRACER" 60a mppt controller is simply rugged compared to Morningstar price and has excellent features like: -inbuilt LCD display,
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chris81964:


I don't do the Indian brands. So I am not familiar with them and can't give a qualified opinion. The reason why they list cycle uses on batteries is so that you know the maximum and minimum voltage you can charge the batteries to. When they are not charged properly sulfation occurs and there is no particular manner in which it occurs. Differences in tightness of your lug, distance of battery to the charge source, imperfections in the battery can be the reason why one fails before the other.

I attended a class over the weekend and the instructor told us that you can equalize your sealed batteries. Give that a try and see if it will bring it back. At 12 Volts your battery is flat. It is beyond flat at 11 volts. You might want to set the alarm for 11.5 Volts.

Run the equalization and get a desulfator. The instructor swore by them. If the batteries are not too far gone you might be able to rescue them with the suggestion that I made.

Saipro:


There are lots of reasons postulated for the positive/negative terminal batteries failing earlier but the truth is, many at times, for no discernably obvious reason, they simply fail. Just like that.

I have great faith in desulphators as I have used a few with testimonies (Abunafiu is aware of this) but the issue of equalizing sealed lead acid batteries/AGM batteries ......
.... at best, one would be killing the batteries faster (shortened lifespan/cycle life). Note that the risk of explosions become real when equalizing AGM batteries. A suitable alternative might be holding the absorb (or bulk voltage for those which have different+higher bulk voltage) for many hours. Both safe and effective.

Oops, I've said more than intended

chris81964:


Thank you for your feedback. Like I said an instructor that teaches the class suggested it. I will try it. Granted for less than 1 hour. Another suggestion that I saw was to increase the float voltage by a few volts for a few days.
It is all experimentation. If it works we look like geniuses, if it does not we look like goats.

The batteries have one foot in the grave so why not?

okoegualek:
Any Black Friday offer in the offing from our sellers here?Good am @all.

okoegualek:
Any Black Friday offer in the offing from our sellers here?Good am @all.

kiekie1:


Yeah.... Discount prices on all solar shop products.

21% discount on all PRAG products ..

Bluegate 3.5kva 24v pure sinewave LCD display inverter @ 100k

Must power "voltron" 2kw 24v pure sinewave LCD display inverter @ 75k

Mercury tubular/flooded12v 220a batteries "18 months warranty" @ 50k

Mercury deep cycle 12v 200a batteries @ 50k
A&E 10kva servo wall mount stab "80-270 AC input range"

Infinitum battery life saver desulphators @ 20k

Programmable Timer switches with lcd display @ 4k

10mm² black armoured solar panel-charge controller cables with earth/grounding flex "silver copper based & heat resistant " ... @ 500 per yard

Discount prices on all JOY solar panels..

CSUN panels arriving soon.....


*AUTHORIZED DEALER SOLAR SHOP LTD PRODUCTS*
All our products come with 1 year Warranty

*AUTHORISED DEALER PRAGMATIC TECHNOLOGIES*
All our prag / cyberpower products comes with reliable warranty

For best affordable prices,contact Smartcell Global Services,Lagos Nigeria. Simply call Sir Frankie "+2348135031951" for purchase,fast delivery and waybills .. Thanks !!!

richmon74:


Happy Black Friday Sir Frank
Please remove the image you are using on this advert. It is not right for you to copy my image and use consistently for your public advert.
Take care and happy sales

kiekie1:


Thanks... Images can be shared since its basically for sales reason ...mind you I never copied it from you, what point are you actually tryna make here tho, I can send you enough stock pictures from various warehouses if you need cos there is no patent right governing product pics and sharing for resales sake.! Weekend regards!

Saipro:


Indeed. You're quite correct. However, above all outcomes you might seek, bear your own health and safety in mind. The batteries have one foot in the grave, not you.

kiekie1:


Thanks... Images can be shared since its basically for sales reason ...mind you I never copied it from you, what point are you actually tryna make here tho, I can send you enough stock pictures from various warehouses if you need cos there is no patent right governing product pics and sharing for resales sake.! Weekend regards!

chris81964:


Sir Frankie there are laws that govern image (creative laws) use without you giving credit to whom the image belongs. What you lose is not worth the short term gains that you get. You can take it as good advice or you can respond in the same manner.

abunafiu:
I would like to throw this issue up for discussion.
I installed a number of 1.5kva 24v inverters(safepower, luminous, genius , sukham etc). After 10 months thereabout, the clients notified me of reduced number of hours of backup.
Preliminary checkes revealed a failing battery and in most cases, the most negative battery.
The same happens with INDIAN 48v inverters too.
Lets discuss the possible causes and solution.
My integrity has been badly affected as a result because I promised most of them 2yrs of useful battery life. The most annoying part is most clients are my senior colleagues at work...u all know what it means.
attn: juo, richmon74, chris81964, Konnektions146, Earthrealm, c0ogumo and every other knowledgeable person .

yemisolar:


While we wait for the oga's at the top, I have used (and still) install Indian brands. I was in your shoes a couple of years ago and it was a humiliating experience.

While I don't want to condemn you because I have learned a lot of from your posts here on Nairaland, I think it was wrong for you to promise two years of service life. There is a reason why the manufacturers only give 6 months. The primary line of business for most of these companies is inverter production, what they do is outsource their battery production to Chinese companies. The number of cycles in these batteries is less than 400 making the lifespan just about a year. The exceptions occur in areas with good power supply and extra energy efficient clients, as we all know most Nigerians have a wasteful habit.

For me I stick with exide and quanta batteries, the no1 and no 2 in India respectively. They are a little more expensive (about 10k higher) but so far (a little less than four years) I have had a good experience with them.

As for your clients, make them a good offer such as staggered payment in order to remedy the situation. Best of luck.

okoegualek:
Finally,I have been able to read this library of Solar ......from page 1 till page 116.I must commend every contributors to this thread,especially George D,Abunafiu,Kiekie1,Frankie,Richmond etc and others too numerous to mention.If I mispelt your name ,pardon me.Godless u all,keep the thread alive as always.Hmmmmmmm,and I say to myself welcome to DIY Solar ....

richmon74:


Happy Black Friday Sir Frank
Please remove the image you are using on this advert. It is not right for you to copy my image and use consistently for your public advert.
Take care and happy sales

chris81964:

Funny comment.
Safety is important. I am not convinced that an over charge lasting an hour would result in an explosion.
Many people here have deliberately shorted batteries and they did not explode.
At the end of the day we all do what we find comfortable.

Saipro:


You're quite right the likelihood of a battery exploding from overchaging AND internal shorts are quite small (about 10 - 20%) of all battery explosions. Most are due to ignition from an external spark. That data is from countries which keep statistics. I have no clue of local statistics. Indeed, asides from one and only one incident, all battery explosions I have witnessed are from external sparks. I periodically overcharged dying car batteries to revive them WHILE MONITORING BOTH SG AND TEMPERATURE. I still tried reviving one two weeks ago over a period of two days. I had about 30% success but it came to life sufficiently to be of short-term use. One should be safe doing that. However ......

In as much as it might seem a funny comment, those who've experienced explosions (I have a friend with a scarred lower face and upper torso) will tell you it's a life altering experience not to be taken lightly. Remember, most of the things posted here are not for the sake of the pros but for the amateurs.

kiekie1:


Yeah happy Xmas sales .... Discount prices on all solar shop products.

20% discount on all PRAG products ..

Bluegate 3.5kva 24v pure sinewave LCD display inverter @ 100k

Must power "voltron" 2kw 24v pure sinewave LCD display inverter @ 75k

Mercury tubular/flooded12v 220a batteries "18 months warranty" with electrolyte level indicator @ call for price

Mercury deep cycle 12v 200a batteries @ 48k

Bluegate deep cycle 12v 200a batteries @ 48k

A&E 10kva servo wall mount stab "80-270 AC input range" @50k

Infinitum battery life saver desulphators @ 15k

Programmable Timer switches with lcd display @ 5k

10mm² black armoured solar panel-charge controller cables with earth/grounding flex "silver copper based & heat resistant " ... @ 500 per yard

Discount prices on all JOY solar panels..

CSUN panels arriving soon.....


*AUTHORIZED DEALER SOLAR SHOP LTD PRODUCTS*
All our products come with 1 year Warranty

*AUTHORISED DEALER PRAGMATIC TECHNOLOGIES*
All our prag / cyberpower products comes with reliable warranty

For best affordable prices,contact Smartcell Global Services,Lagos Nigeria. Simply call Sir Frankie "+2348135031951" for purchase,fast delivery and waybills .. Thanks !!!

abunafiu:

I sincerely appreciate your honest response. I still wait for other senior friends comment.
Meanwhile, I have sent you a pm.

samnaija:
house need guidance here. a battery bank of 12volts 500ah. how many panels will i need to charge this bank and the spec of the charge controller, to bring it to 100% soc. my inverter just brings the batteries to 97% on NEPA, thinking of buying a smart charger to assist you inputs needed urgently ...

c0ogumo:


Please answer the following questions;

Why cant your inverter fully charge your bank?
What is the brand of your inverter and what is the charging current?
Why is your inverter bringing the bank to 97%? why not 100%
Are you looking for solar to fill the remaining 3%? or to charge from 50% DoD to full?

samnaija:

the inverter is a 1 kva kevin inverter the charging current 30amps.when there is nepa the display shows about 225 volts entering the battery , the soc will try to reach 100% but does not get there till nepa takes light.always reaching 97%.about 13.8volts.. this is only when there is light. i want to upgrade to solar. and I want to make no mistakes. thnks in advance.

samnaija:

the inverter is a 1 kva kevin inverter the charging current 30amps.when there is nepa the display shows about 225 volts entering the battery , the soc will try to reach 100% but does not get there till nepa takes light.always reaching 97%.about 13.8volts.. this is only when there is light. i want to upgrade to solar. and I want to make no mistakes. thnks in advance.