Please which brand of 200ah battery is the best to buy that can serve at least 5 years

Durable Monbat AGM Batteries fresh from the oven ... See production date in picture attached below ... Kindly contact us for yours at discounted price

solasola:
I would like to propose an optimized use for solar installations especially for personal home use. This idea is not entirely new, and most solar packages offer these solutions in some ways. Its all about going the DC way. That's the same reason mtn solar gives 2 DC light, Azuri gives about 4 plus a dc tv. Using dc appliances improves solar power efficiency incredibly. Hence there is no need for lots of power adapters we all have around the house as these adapters greatly decrease the battery and inverter efficiencies.
Hence to get optimum use of battery life, my advice is to run purely on DC gadgets as they are becoming quite popular in the market currently. Your bulbs, security lights, TV, fan, even refrigerator can run all on DC.
I am currently off-grid and run all my lights, fan,tv, phone charging on DC.

Good one. But if you will have to run power socket points on DC, especially from room to room, the drop in DC voltage that occur over long distances will preclude that. You will also require thick gauge wires for those long distance connections if DC appliances that it will handle are more than ordinary DC lights, eg A 30watts led TV some 15 meters away from the power source will require some thick gauge wires, same for an 80 watts refrigerator.

You will also need to ensure the voltage of your DC power thru the wires is higher than the nominal voltage of your appliances and then use a DC-DC buck to get the desired voltage at the point of termination to each outlet.

For instance, what I do is have btw 16v-24v running from to the charging ports around the house and then USB wall sockets (12v-24v input range) buck convert to 5v output. Light supplies of 16-24v get supplied to CC-CV buck packs that supply 12v to light bulbs for other appliances (cctvs, alarm systems, sprinklers etc).

DC, though desirable for efficiency is not as good as AC for very long distances.

An urgent advice is needed please,Can i buy a solar panel and charging comtroller plus deep circle battery and use my ups as an inverter itself?

harizonal123:


Leave load terminals. It's for small DC load
Split wires in twos like Y shape to connect to double terminals. Problem solved.
Contact me on email so u wont over charge your batteries

I contacted the seller and he gave me same advise: split the wires in two like Y and connect. Thanks all.

Ejiyke24:
An urgent advice is needed please,Can i buy a solar panel and charging comtroller plus deep circle battery and use my ups as an inverter itself?

I read something like that on YouTube. The man replaced the follow come 9ah12v battery with a 40ah 12v battery and used it to power his appliances, even a drill. Will send the link shortly if I still get it.

Please, I need advice.
I want to buy Prag 2.5kva 24v inverter with 2 batteries. Please, What size of solar panel will fit in and also a matching mppt charge controller?

Donsco:
Please, I need advice.
I want to buy Prag 2.5kva 24v inverter with 2 batteries. Please, What size of solar panel will fit in and also a matching mppt charge controller?

Like the gurus will say, define your load first.

Topmost11:


Like the gurus will say, define your load first.

300 watts continuous load, and an inverter refrigerator which won't be on always.
Will pump water during the day.

Thank you.

Ejiyke24:
An urgent advice is needed please,Can i buy a solar panel and charging comtroller plus deep circle battery and use my ups as an inverter itself?

Yes of course, I use a similar setup myself

zeestone99:


Let's do the maths. If i do 11 years at 80% comfortably. You buy four 100ah between 60 to 65k.thats 240k to 260k.
Secondly you dare not do 80% otherwise you change your batteries less than a year. Let's say you do that and change batteries yearly. That's 260k × 11 = 2.86million.
Now let's assume your batteries did 2years plus, that's 260k × 5 = 1.3million.
Thirdly let's factor the fact that one battery starts misbehaving and we are compelled to change the whole four.
Now let's talk about faster recharge. I could go on and on but let's leave it here.

Everyman with his own opinion sha. You might like leadacid while some people prefer lithium.

This is awesome.
Does it have inverter compatibility issue?
I mean, can one use it with any 48v set up?

Ejiyke24:
An urgent advice is needed please,Can i buy a solar panel and charging comtroller plus deep circle battery and use my ups as an inverter itself?

yeah, you can.. the major challnge the ups has is the small battery and the small charging current, since you intend to bypass these short comings by using a bigger battery...and solar panels to charge the battery...then you should be fine..

the only gray area is longevity os such a setup...you know a ups is not designed for sustained inverter load carrying, max most ups can do is 1hr on battery, what am not sure of is how the electronics will behave under sustained load...when used as an inverter.............does it have a cooling fan??

you can set aside 10k or 15k and buy a cheap 800va or 1kva inverter...souer has such products plenty..check konga or jumia, or the inhouse vendors

Donsco:


300 watts continuous load, and an inverter refrigerator which won't be on always.
Will pump water during the day.

Thank you.

From advise given me when I asked same question, you will need at least 1500watts(combined) panel, and a cc of not less than 40a.
In my case I opted for a 60a cc to allow for possible future upgrade. I just got supplied a cc via aliexpress that cost about 30k.

Gurus in the house will finetune my message for you. Like someone will always post, I am a novice o.

House, happy Sunday.
I saw my pwm cc push up to 19a today. Will that not be too high a charge current for a single 200ah battery? What is the max charging current of batteries?
It usually fluctuates between 4.5 and 10. But I happened to check today and noticed that it went as high as that. 4 panels of 150 watts should have constant 32a ie(8a×4) at least is what I am told.

freshp:


A Fuel-less Generator !!!

Men!!! i no fit wait.
TEchnology is fast moving on . . .

I saw this post of George_D from 2010. Is the generator now available?

I love this thread.

zeestone99:
I couldn't make a review on the 1st batch of lithium batteries. Another batch has landed and I have the time to the reviews. I have two units of these. 100ah 48v each. Will keep the house updated.

Call/whatapp 08117398294 for your solar panels and batteries.

Sweet

adrusa:
Let me share a little experience with you, especially for people who may be employing installers to do their solar jobs. A small solar set up was installed in my office with 8 batteries at 48v and what appeared like an a PWM controller but with MPPT written on it. We really didn't put it to use until sometimes last week. However, we noticed that the batteries soon died, even in the afternoon with blazing sun.

So my colleagues in the office informed me and I went down to see the installation. I asked that the NEPA input should be put off and put a load on the inverter. Lo and behold, the charge controller was not supplying any current to the battery. So, we were effectively running on the batteries. While the installer was fiddling with the installation, I looked at the label on the CC. Low and behold, it is labelled "auto 12/24v". So, the installer actually put a CC with max 24v input on a 48v system!

Fast forward to this afternoon, when the installer brought a Fangpusun CC (the FM80 Clone) to replace the CC. Still the CC was still not supplying any current to the batteries. Unfortunately, the installer was garrulous, unwilling to own up to his mistakes and was insisting that everything was fine. By the way, the Fangpusun was displaying "unloaded" at the right lower corner. I really have no idea what that means since I have never seen that on my original outback CC.

So, lessons

1. Don't assume that your installer know what he is doing, pay attention and ask questions
2. Ask a more knowledgeable friend to help you look over your installation if it is working well
3. Don't let any installer bamboozle you. If he can not explain what he is doing in a way you can understand, he probably does not know what he is doing.

But for the fact that I checked, we would have been thinking that our solar was working well, when we were only using NEPA to charge our batteries.

Finally, what does "unloaded" mean on Fangpusun Outback Clone?

You are right.
And this is why I have been reading through this thread as I saw the link.
Have gained good knowledge here.
Thumbs up guys.

zeestone99:
I couldn't make a review on the 1st batch of lithium batteries. Another batch has landed and I have the time to the reviews. I have two units of these. 100ah 48v each. Will keep the house updated.

Call/whatapp 08117398294 for your solar panels and batteries.

chiefo please still awaiting this review.

Donsco:



You are right.
And thus is why I have been reading through this tread as I the link.
Have gained good knowledge here.
Thumbs up guys.

The truth is that the solar concept is still new. Most installers are poo. The solar technology is an ungoing one. You need to constantly update your knowledge and have a thorough fundamental of physics.

Dishtech:
For I have small package like that, 2 used 40ah LiFePo4 battery (10k each), 250watt solar panel (33k) 40A pwn charge controller ordered from China (6.5k) and a homemade inverter made by my self (7k), cable (3k) TOTAL #69,500. This power my 32" Led TV, home theater, decoder, my standing fan, charge my phones, and 4 Led bulbs. Am usually home from 7pm which my appliances comes on then, till 11:30pm or 12am bed time TV is off leaving light and fan till 3 or 4am when weather is cold fan is off leaving light till day break. If am home I equally use the system when battery is charged from noon and the system is running smoothly for 6 months going. Below are my setup!

I didn't know this Lifepo4 batteries can be connected in series.
I know this battery is rated 5a 14.6v but how come you use 40a Charge controller. Abeg abi novice o. Wanna understand.

Donsco:



I didn't know this Lifepo4 batteries can be connected in series.
I know this battery is rated 5a 14.6v but how come you use 40a Charge controller. Abeg abi novice o. Wanna understand.

My panel is just 250watts only so can not deliver up to 40a, is just an oversized.

Dishtech:

My panel is just 250watts only so can not deliver up to 40a, is just an oversized.

How many amperes charges the battery pack?
5 or 10amp? I asked because the normal AC charger is rated 5a 14.6v

A novice asking o.

ceaser:


Good one. But if you will have to run power socket points on DC, especially from room to room, the drop in DC voltage that occur over long distances will preclude that. You will also require thick gauge wires for those long distance connections if DC appliances that it will handle are more than ordinary DC lights, eg A 30watts led TV some 15 meters away from the power source will require some thick gauge wires, same for an 80 watts refrigerator.

You will also need to ensure the voltage of your DC power thru the wires is higher than the nominal voltage of your appliances and then use a DC-DC buck to get the desired voltage at the point of termination to each outlet.

For instance, what I do is have btw 16v-24v running from to the charging ports around the house and then USB wall sockets (12v-24v input range) buck convert to 5v output. Light supplies of 16-24v get supplied to CC-CV buck packs that supply 12v to light bulbs for other appliances (cctvs, alarm systems, sprinklers etc).

DC, though desirable for efficiency is not as good as AC for very long distances.

I hail thee. You quite grounded on this. Well I have already put all you said into consideration. I have learned so much in practice. 9 months counting and its working perfectly for me. I am looking to increasing my battery capacity and solar panels. DC wiring has made live wonderful for me. I just wasn't ready to spend so much on inverter, battery etal. The DC journey has been rewarding so far.

Pls advice urgently needed on the setup in the picture.

Panel is 600watts
Wiring is parallel
Inverter is 12v, 900vac

Thanks

Please what is the best maximum bulk charge voltage for Gel batteries? is it the same for AGM?

Good morning everyone,

I would like to buy Prag 4kva 24v inverter with 2 units of 200ah batteries.
Continuous load will be about 350watts but wants to accommodate water pump and ironing (low voltage), please what size of solar panel and mppt charge controller should I budget and hope for in order to achieve good efficiency of the system?

Donsco:
Good morning everyone,

I would like to buy Prag 4kva 24v inverter with 2 units of 200ah batteries.
Continuous load will be about 350watts but wants to accommodate water pump and ironing (low voltage), please what size of solar panel and mppt charge controller should I budget and hope for in order to achieve good efficiency of the system?

your plan is doomed from the start, make effort to read previous pages, this issue has been discussed a thousand times.

max load u shud put on a 12v 200ah battery is c/20 wch is 10amps which is equal to 120w, since u hv 2 of them, then its 240w...u may not do serious harm to the bank if u intermittently draw x2 of this say 480w for short periods ie c/10, but anything higher than this...spells premature death for the battery.

google well, to gain more knowledge about what you are about to enter into

earthrealm:


your plan is doomed from the start, make effort to read previous pages, this issue has been discussed a thousand times.

max load u shud put on a 12v 200ah battery is c/20 wch is 10amps which is equal to 120w, since u hv 2 of them, then its 240w...u may not do serious harm to the bank if u intermittently draw x2 of this say 480w for short periods ie c/10, but anything higher than this...spells premature death for the battery.

google well, to gain more knowledge about what you are about to enter into

how about, except he over sizes his solar panel array to accommodate those requirements during daytime alone ?

earthrealm:


your plan is doomed from the start, make effort to read previous pages, this issue has been discussed a thousand times.

max load u shud put on a 12v 200ah battery is c/20 wch is 10amps which is equal to 120w, since u hv 2 of them, then its 240w...u may not do serious harm to the bank if u intermittently draw x2 of this say 480w for short periods ie c/10, but anything higher than this...spells premature death for the battery.

google well, to gain more knowledge about what you are about to enter into

This is one of the major things people fail to get right in solar. If you overload and over charge your batteries especially with a poo cc, na Oyo you dey. Earthrealm, you are on point.

dragnet:

how about, except he over sizes his solar panel array to accommodate those requirements during daytime alone ?

that has an inherent problem, and would need expert supervision to make sure damage doesnt occur.

am thinking along the lines of overcharging the batts..., assuming his pumping machine is 1.5hp..ie 1200w approx, he would need panels of that wattage to scale by, factoring in losses and all. say he has a 1500w array, at 24v, thats about 55amps or so...though average wud be 30a to 45amps, i averaged same when i had 1500w on a 24v inverter. let him steer clear of flooded batts, as they dont like such high currents, as i dont think it would be possible for him to always be available, monitoring the harvest, so as to go switch on his heavy loads, when harvest is high...