dgr8truth:
My DIY powerwall battery cabinet is almost complete.

Kudos,
But be wary of wood as it is quite combustible else keep a fire extinguisher at sight..
Electrical Rails would be a better option for better venting.
Just my opinion though

dgr8truth:
The battery cabinet for my DIY powerwall is now completed and in full use.

The next project is building the remaining 43000 kilowatts hours pack. It will be a real challenging project.

I'm sorry I haven't been following adequately
But Permit me to ask what kind of BMS did you use?
And kindly install some vent holes in the cabinet.

[ short circuquote author=Barezzi post=70188547]Guys,
Is there any danger connecting the AC output of an Inverter to its AC input?[/quote]

I've seen few responses to this question and I think people are mixing it up.

The question is about "connecting the AC output of an Inverter to its input". for this particular scenario, I've done it to Felicity Inverter and I noticed the inverter was making a 'thud' sound (every 3sec) with the charge light trying to come on. it was as if the inverter was trying to charge the battery with its own source but some intelligent circuitry was also struggling to prevent that.

The other scenario is when you connect the output of an Inverter to its input SOURCE (PHCN or Gen).
now, this is not just a short circuit; it's actually worse than a short circuit. it's like connecting together any 2 phases of a 3 phase system.

#MY PERSONAL OPINION.

Cheers

Just came by the following thread from last year. It might be worth reading for those who might not have otherwise seen it or something similar, just to help prepare for the next CC Wars...

https://powerforum.co.za/topic/1429-axpert-mppt-vs-victron-mppt/

........
P34c3
.....
...

Superceed Batteries
12v 100ah= 40,000
12v 150ah= 60,000
12v 200ah= 80,000

Maximum power batteries
12v 100ah= 40,000
12v 150ah= 60,000
12v 200ah= 80,000

Double tech batteries
12v 100ah= 40,000
12v 150ah= 60,000
12v 200ah= 80,000

Network batteries
12v 110ah= 50,000
12v 180ah= 70,000
12v 210ah= 90,000
12v 250ah= 115,000

kiekie1 :These batteries how are their performance like? I guess they are new in the market

harveyspec:


Superceed Batteries
12v 100ah= 40,000
12v 150ah= 60,000
12v 200ah= 80,000

Maximum power batteries
12v 100ah= 40,000
12v 150ah= 60,000
12v 200ah= 80,000

Double tech batteries
12v 100ah= 40,000
12v 150ah= 60,000
12v 200ah= 80,000

Network batteries
12v 110ah= 50,000
12v 180ah= 70,000
12v 210ah= 90,000
12v 250ah= 115,000

kiekie1 :These batteries how are their performance like? I guess they are new in the market

Good morning Sir, Yes not really new in market but the performance is quite encouraging for its class. Notify me if you are interested in gel or agm type as they are available! I have sold quite a number and client's keep asking for more . Thanks

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1.2kva 12v= 50,000
1.2kva 12v (hybrid)= 58,000
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EP Solar 12/24v 40a MPPT(a series ep ever) solar charge controller @ 70k
Trojan 12v 200a J200re USA flooded batteries @ 129k...(limited quantity in stock)
Trojan 12v 205a agm batteries ... 164k
Trojan 6v 375a agm battery .... Arriving soon
USA Mnspd DC / AC ..... 50k
Schneider DC SPD ..........30k
ZHC Battery equalizer 12/24/36/48 volts..... 35k
Quanta Amaron 12v 200a vrla battery @ ...130k
Long battery 12v 200a agm battery @.....115k

Superceed Batteries
12v 100ah= 40,000
12v 150ah= 60,000
12v 200ah= 80,000

Maximum power batteries
12v 100ah= 40,000
12v 150ah= 60,000
12v 200ah= 80,000

Double tech batteries
12v 100ah= 40,000
12v 150ah= 60,000
12v 200ah= 80,000

Network batteries
12v 110ah= 50,000
12v 180ah= 70,000
12v 210ah= 90,000
12v 250ah= 115,000

Flames 300w mono .... 47k
Watts meter "kill-a-watt meter" ....9k
Yachi solar panels ;
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260w poly panels.......@47k "limited stock"
310w poly panels........@58k "limited stock"
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Victron multiplus 3kva 48v .....@600k
Schneider connect 2524..........@550k
Growatts SPF3000 plus hybrid/solar inverter...@290k
Growatts SPF 5000 hybrid/solar inverter... @320k

Canadian 340w mono solar panel"Korean cells" .... Offloading
Canadian 330w solar panel.....@65,500 bulk price

Sunshine solar modules :
130w poly 23000
250w poly 39000
300w Mono 52,000

High quality solar panels best price:
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100w mono 19500
150w poly 23000
200w mono 33000
260w poly 35500
260w mono 39000
320w poly 45500

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With 30k , I can offer you a set of pro solar roof mounts including ;
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4 qty rack end clamp,
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Hello House,
I have this safe power 3.5kva 48v interter with sla batteries
I don't know if it a common thing,
I noticed when the battery is fully charged,
Even after 5 hours+, the battery is still very warm and can hear it hissing,
To my view, during float the battery temperature shouldn't be too warm else it interprets its still charging with high current.
I don't know if its what I should worry about or its normal for the battery to be too warm and hissing.

A battery that goes hot/very warm under normal charge is either heavily sulfated or being overcharged or both. The battery hissing is a clear sign the battery electrolyte is boiling.

The battery will not long survive this ill treatment especially if a sealed unit.

You need to confirm what voltage the inverter is charging at during absorb and float. If the inverter voltage output is within spec then the battery is probably the culprit and is likely as good as dead already.

You want to be very careful to avoid a battery explosion or fire.

Feshizzy:
Hello House,
I have this safe power 3.5kva 48v interter with sla batteries
I don't know if it a common thing,
I noticed when the battery is fully charged,
Even after 5 hours+, the battery is still very warm and can hear it hissing,
To my view, during float the battery temperature shouldn't be too warm else it interprets its still charging with high current.
I don't know if its what I should worry about or its normal for the battery to be too warm and hissing.

NiyiOmoIyunade:
A battery that goes hot/very warm under normal charge is either heavily sulfated or being overcharged or both. The battery hissing is a clear sign the battery electrolyte is boiling.

The battery will not long survive this ill treatment especially if a sealed unit.

You need to confirm what voltage the inverter is charging at during absorb and float. If the inverter voltage output is within spec then the battery is probably the culprit and is likely as good as dead already.

You want to be very careful to avoid a battery explosion or fire.

Thank you for your reply,
I checked the Volt readings when the battery were full and it was 54v,
My major concern is that, is the battery meant to be still warm when it's fully charged?
Charging source is from the grid.

Feshizzy:

Thank you for your reply,
I checked the Volt readings when the battery were full and it was 54v,
My major concern is that, is the battery meant to be still warm when it's fully charged?
Charging source is from the grid.

you might be dealing with a short cell. From the nominal voltage it seems you have at least 4 batteries in the bank. Do all the batteries have the same warm temp and produce hissing sound? Try and feel your hand be the side of the battery to see if the warmess is evenly distributed or if some parts are much warmer. Age of the battery would also be a good addition.

Feshizzy:
Hello House,
I have this safe power 3.5kva 48v interter with sla batteries
I don't know if it a common thing,
I noticed when the battery is fully charged,
Even after 5 hours+, the battery is still very warm and can hear it hissing,
To my view, during float the battery temperature shouldn't be too warm else it interprets its still charging with high current.
I don't know if its what I should worry about or its normal for the battery to be too warm and hissing.

either a wrong battery type selector switch has being selected, sending high or wrong voltage to th battery, or you have a short in one or some of the batteries.

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Hello great minds, hope you'll having a great weekend. Kindly oblige me a privilege to ask a quick one.
What is the implication of an oversized inverter on a battery bank?
For example; having a 10kva 96v for a maximum cumulative load not more than 1.5kw at any point in time.
Thanks y'all.

kadorzy:
Hello great minds, hope you'll having a great weekend. Kindly oblige me a privilege to ask a quick one.
What is the implication of an oversized inverter on a battery bank?
For example; having a 10kva 96v for a maximum cumulative load not more than 1.5kw at any point in time.
Thanks y'all.

More often than not, just an increased self-consumption by the system.

If the instantaneous loads will never exceed 1.5kw at ANY point in time, why use a 10kva 96v inverter?

Other than the deep crater in your wallet, the battery bank will hardly be cycled. With the inverter operating at max 2% loading,
the batteries will live forever.

kadorzy:
What is the implication of an oversized inverter on a battery bank?
For example; having a 10kva 96v for a maximum cumulative load not more than 1.5kw at any point in time.
Thanks y'all.

I have a Prag 1kva PURE SINE WAVE 12v Inverter up for sale.

It's barely 3 months old.

Selling for N45,000

call 0817-194-2851 if interested.

It is like powering a 1 room apartment with a mikano......mikano self consumption is higher than the load on it hence fuel efficiency is tending towards zero

kadorzy:
Hello great minds, hope you'll having a great weekend. Kindly oblige me a privilege to ask a quick one.
What is the implication of an oversized inverter on a battery bank?
For example; having a 10kva 96v for a maximum cumulative load not more than 1.5kw at any point in time.
Thanks y'all.

DMerciful:
It is like powering a 1 room apartment with a mikano......mikano self consumption is higher than the load on it hence fuel efficiency is tending towards zero

Barezzi:
If the instantaneous loads will never exceed 1.5kw at ANY point in time, why use a 10kva 96v inverter?

Other than the deep crater in your wallet, the battery bank will hardly be cycled. With the inverter operating at max 2% loading,
the batteries will live forever.

A total waste of resources if I might add.

Hello house, please one of my batteries is drifting away. In fact , it is reading 11.5 while others are reading 12.5. Please I need someone to recommend a good and efficient battery charger and probably how and where I can get it. Thanks

mrmachine:
Hello house, please one of my batteries is drifting away. In fact , it is reading 11.5 while others are reading 12.5. Please I need someone to recommend a good and efficient battery charger and probably how and where I can get it. Thanks

Battery charger or Battery Balancer?

Kindly get intouch with Juo, keikei or any other reputable sellers

Happy holidays..

We can place your orders on amazon USA at just 310 naira per usd and have your items shipped to Lagos at very affordable rates..

https://www.nairaland.com/3894150/place-orders-amazon-310-4.5/127

A link to our thread is above. We hope to serve you.

Thanks bro. This one don pass battery balancer, na to isolate first and charge well before reuniting with others and now install balancer.

I am not sure I still have JUO contact o.

rajo4real:


Battery charger or Battery Balancer?

Kindly get intouch with Juo, keikei or any other reputable sellers

UPDATE ON LUMINOUS INVERTERS & BATTERY DISCOUNTED PRICELIST LOADING ......

Happy Sallah/Eid Mubarak celebration to my Muslim clients ... Nagode !

Hello Wonderful People,
Happy Holidays,
Who has success stories as regarding topping up agm batteries with distilled water from time to time?
I do understand agm are said to be maintenance free but research says that's not entirely true and mentioned they could be topped up.

So I do want to understand, if it's been practiced and not just theoritical view.


Oh! I added distilled water to a gatson 12v200a battery of about 9 month old due to the fact that it wasn't retaining charge and found out the cells where dry. After adding water the battery started getting hot and losing volts, so I had to quickly drain out the battery.
Any insight on why it became hot after adding water because before I added water the battery was cold.

Regards.

Feshizzy:
Hello Wonderful People,
Happy Holidays,
Who has success stories as regarding topping up agm batteries with distilled water from time to time?
I do understand agm are said to be maintenance free but research says that's not entirely true and mentioned they could be topped up.

So I do want to understand, if it's been practiced and not just theoritical view.

.....
Regards.

In theory, never try that.

In practice, almost every solar enthusiast I know who's used AGM (and had dead batteries) would have either wondered about it or tried it. I've done both. Hit or miss, more misses than hits (let's say 15% success with limited extension of battery life and a very real risk of battery explosion). I witnessed poorly sealed caps pop off with such force as to displace a spanner.

At best, a risky experiment. I can't stop you from trying it but I can give one really good piece of advice: have 911 on speed dial.

Oga Saipro has said it all. There are plenty of DIY videos online showing how to add water to a sealed lead acid battery but the reality they never mention is a very low success rate.

Part of the reason is that sealed batteries have an internal pressure range they were designed to work at - towards the end of the charging process the batteries will vent some gas outside the case - this is also why overcharging kills a battery very fast as the battery dries out from venting gas (incl. a mix of Hydrogen and Oxygen = Water).

The sealed batteries are designed to vent out i.e one way -and never to take in water - so adding distilled water to a sealed battery basically ruins the calibrated internal pressure environment of the battery. The battery will tend to heat up faster while charging and may no longer vent gas safely leading to increased risk of explosion.

So if you add water to a battery, be prepared to drop the charge rate well below C10, monitor it closely for heat buildup and be ready for a fire and/or explosion as combustible hydrogen and oxygen are now being vented in an unsafe and uncontrolled manner.

Twice now in my life I have had batteries blow up in my face, these were random occurences from a active life working with batteries nearly all the time and I did not do anything risky like adding water to a sealed battery or such - by the grace of God and luckily for me I escaped both times without losing my eyes or suffering any permanent damage save for ruined clothing. With the benefit of these two experiences, I won't do anything that would increase the risk of battery explosion and now I always wear eye protection.

Feshizzy:
Hello Wonderful People,
Happy Holidays,
Who has success stories as regarding topping up agm batteries with distilled water from time to time?
I do understand agm are said to be maintenance free but research says that's not entirely true and mentioned they could be topped up.

So I do want to understand, if it's been practiced and not just theoritical view.


Oh! I added distilled water to a gatson 12v200a battery of about 9 month old due to the fact that it wasn't retaining charge and found out the cells where dry. After adding water the battery started getting hot and losing volts, so I had to quickly drain out the battery.
Any insight on why it became hot after adding water because before I added water the battery was cold.

Regards.

Saipro:

In theory, never try that.

In practice, almost every solar enthusiast I know who's used AGM (and had dead batteries) would have either wondered about it or tried it. I've done both. Hit or miss, more misses than hits (let's say 15% success with limited extension of battery life and a very real risk of battery explosion). I witnessed poorly sealed caps pop off with such force as to displace a spanner.

At best, a risky experiment. I can't stop you from trying it but I can give one really good piece of advice: [/b]have 911 on speed dial.

[b]

Sir NiyiOmoIyunade
Thank you so much for the insight,
I have indeed leant something that would last forever,
After adding water to the battery, it seems to have shorted itself out as it voltage keep dropping, well that's the end of that battery.

Thank you too Sir Saipro
As indeed, messing with factory seal on battery can be unforgiving,
I also did learnt this in my cause of experiment, as the seal cap were popping up with great force.

In all of these, I have learnt never to top water on sealed battery,
But anyway to maintain a battery, as these batteries do not exceed 30% DoD for the past 9 months but became quite unusable these past 2 months but wasn't noticeable as electricity was a bit constant for a while.

Regards

May your household experience love, happiness and prosperity beyond measure this Salah ,
The crescent-shaped moon brighten your path towards enlightenment and may Allah bless .you with peace and grace.
Wishing you a Happy SALAH.


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2KVA/24V N80,000
2.6KVA/36V N105,000
3.6KVA/48V N170,000
5.2KVA/48V N340,000.
5.5KVA/96V N340,000
10KVA/180V N790,000


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1.1KVA,12V N70,000
1.2KVA,12V N90,000
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7.5KVA/120V N500,000

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5KVA /48V 60A MPPT N310,000
7.5KVA /48V 60A MPPT N430,000
10KVA /48V 100A MPPT N750,000
15KVA /48V 60A MPPT N850,000
15KVA /48V 120A MPPT N890,000


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3KVA/24V(600W MPPT) #149,000
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VOLTRON STABLIZER
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12KVA WALL MOUNT RELAY REGULATOR #120,000
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15KVA WALL MOUNT SERVO REGULATOR #240,000
20KVA RELAY REGULATOR #195,000
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30KVA SERVO REGULATOR #470,000


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LONG BATTERY 12V/200AH N 120,000
MONBAT BATTERY 12V/200AH N 125,000
MONBAT BATTERY 12V/210AH N 120,000
ELSON BATTERY 12V/200AH N 115,000
MICROTEC BATTERY 12V/200AH N 105,000
M POWER BATTERY 12V/200AH N 105,000
EASTMAN 12V/200AH TALL TUBULAR BATTERY N115,000
GLT BATTERY 12V/200AH N 90,000
ZEEDIX BATTERY 12V/200AH N 95,000
RITAR BATTERY 12V/200AH N 130,000
PRAG BATTERY 12V/200AH N 140,000
PATTERN BATTERY 12V/200AH N100,000
QUANTA BATTERY 12V/200AH N 130,000


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BATTERY RACK 2 BATTERY N 15,000
BATTERY RACK 4 BATTERIES N 30,000
BATTERY RACK 8 BATTERIES N 50,000


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ROY SOLAR SERIES
20A 12/24V PWM CONTROLLER N 20,000
30A 12/24V PWM CONTROLLER N 25,000
40A 48v PWM controller (LED) N 50,000
30A 96v PWM controller (LCD) N 120,000
60A 48v PWM controller (LCD) N 95,000


COWIN SERIES
20A 12/24V PWM CONTROLLER N 15,000
30A 12/24V PWM CONTROLLER N 20,000
40A 12/24V PWM CONTROLLER N 25,000
50A 12/24V PWM CONTROLLER N 32,000
60A 12/24V PWM CONTROLLER N 41,000
40A 48v PWM controller (LED) N 25,000
50A 48v PWM controller (LED) N 32,000
60A 48v PWM controller (LED) N 50,000

COWIN MPPT SERIES

40A 12/24/48v MPPT controller (LCD) N 80,000
60A 12/24/48V MPPT controller (LCD) N 130,000

EPEVER MPPT SERIES
12/24/48 /45A N 145,000
12/24/48 /60A N165,000


FANGUNPSUN MPPT SERIES
30A 24V N40,000
60A 48v N140,000
80A 48v N170,000

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JOY SOLAR PANEL
150w MONO -N32,000
200w MONO -N33,000
260w MONO -N54,000


150w POLY –N27,000
200w POLY -N31,000
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320w MONO -N110,000


YINGLIN SOLAR PANEL
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ACCESSORIES

PROGRAMMABLE Digital timer 15A N7,000
PROGRAMMABLE Digital timer 25A N9,000


BATTERY BALANCER /EQUALIZER 48V 35,000
BATTERY BALANCER EQUALIZER 24V #30,000
BATTERY VOLTMETER INDICATOR #1,700


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