dollarnaira:


Just wondering how to charge up 12v 1000amp battery

na big work

dollarnaira:


Just wondering how to charge up 12v 1000amp battery

there are 50A charger, you can use 2pcs and do it in less than 2 hours

JUO:
there are 50A charger, you can use 2pcs and do it in less than 2 hours

Is that a typo

JUO:
there are 50A charger, you can use 2pcs and do it in less than 2 hours

Still depends on depth of discharge sha.
Thanks
But still thinking ooo 100A in less than 2hrs?

ojeysky:


Is that a typo

Me sef shock o

JUO:
there are 50A charger, you can use 2pcs and do it in less than 2 hours

There's a victron canteur charger 12v 100a single unit, why break it up?

ojeysky:


Is that a typo

ojeysky:


Is that a typo

Such a very polite person you are.

..

..

Valto:
good evening, please if anyone have a used but perfectly working 5000w or 10000w servo wall mount stablizer @ affordable price. pls contact me. whatsapp 080-8541-5985

first time to hear servo

wilmaria14:
first time to hear servo

Here is a sample of a desktop version
https://www.nairaland.com/390522/solar-energy-complement-fta/798#91626869

JUO:
there is nothing there to be scared of. I played with the first set I got last year

As in Pylon?

Speaking of that, there was one of us here (can't recall who) that bought a Nissan Leaf battery and installed it in his solar system. I think he made a you tube video then. Did I miss the follow up updates or there was no such updates?

BetaTechnicians:

You're quite right and I do have the charging/discharging tools (with the resistor thing too) I also have 18650 powerbank cases but something I don't have nowadays is time & it is really essential for diy. I really miss the days I had free time... lol
If there's someone that can do a neat and safe job I'll love to hand it over. I once saw someone here that even used fuses, I'd prefer such type of coupling for safety.

Unfortunately you may have to import it, I doubt you'll find that item anywhere.

Ordered since almost two months ago. No sign of it arriving. That's why I'm trying to settle with sourcing locally.

Please, that resistor you talked about, is that also available locally? I mean those white big cuboid shape type that Will Prowse use in his videos to first discharge before connecting batteries to inverters to prevent that spark. I may have done a little, maybe non fatal, damage to one of my MPPTs from such sparks - in a 24v system. I'm worried such sparks will be worse with a 48v system and I really need to arm myself with that resistor.

I found out that resistor is likely the type used in DC fan regulators (the push button regulators, not the digital ones).

The picture attached is one of the 48v/28ah pack. The second case isn't filled yet.

dollarnaira:


Just wondering how to charge up 12v 1000amp battery

A number of limitations which is not unsurmountable but will be challenging. The number of panels is one, then the cabling size to handle that amount of current is another. This will also dictate your challenges with accessories.

Best approach will be to up your 12v to maybe 48v, that way your current demand eases and so also will be the cabling and the accessories.

Watch out for this space,very soon I will be putting up my 2x200AH AGM SMF battery for sale.
Reason:Upgrading to lithium(LiFePO4) soonest.
@Juo, Please quote me if you still have those your advertised LiFePO4 for sale?

JUO:
there is nothing there to be scared of. I played with the first set I got last year

JUO:
100ah/12v lithium battery available
Maximum charge current 50A
Maximum discharge current 50A
Maximum charge voltage 14.8v
low voltage disconnect 10v
over 3000 on cycle at 80% DOD
Weight 13kg
Cell: 32650
Price 170k

@Juo,quote me,if above is still available?
Thanks..

I am not aware there is a 12v 1000Ah battery - OP possibly meant 12v 100Ah and dear JUO read it so.

Again anything is possible sha but never seen 12v 1000Ah yet

ojeysky:


Is that a typo

That was Oga Chris of AWPS I believe. He had quite an interesting experience DIYing a Lithium pack and he had a fire or two as well apart from ruining a few batteries.

This is why Oga GeorgeD1 keeps saying the Lithium option especially DIY is not that simple - a lot of thought needs to go in.

Before I chose PylonTech I had been told of 2 fires with LG Chem RESU - I was just moving to a new place and was not about to take any risk.....

ceaser:


As in Pylon?

Speaking of that, there was one of us here (can't recall who) that bought a Nissan Leaf battery and installed it in his solar system. I think he made a you tube video then. Did I miss the follow up updates or there was no such updates?

NiyiOmoIyunade:
I am not aware there is a 12v 1000Ah battery - OP possibly meant 12v 100Ah and dear JUO read it so.

Again anything is possible sha but never seen 12v 1000Ah yet

He meant 2v 1000ah batteries × 6 pcs to make a 12v 1000ah battery bank

Monlo:


My Ba3s(AGM SMF) are 4years plus as we speak...
There is nothing compared to branded premium Ba3s......

Hello sir, what is the brand of your batteries? I believe they are the ones you want to sell, yea?

While I do not agree 100% with all you have said, I must say that this is a very solid attempt at an objective review/comparison.

However, I must also say the following as a proponent of premium offerings.

The Price Comparison

A decent average Lithium bank costs about NGN1.6million for 48v 400Ah of storage, the equivalent in PylonTech is more like NGN4.2million.

One could say that the average battery would do 3,000 cycles at 80% DoD whereas the Pylon would do 6,000 cycles. So really it is 3.2million vs 4.2million - an NGN1million premium for equivalent life! But wait there is more ....

You must consider that there is about a 70%-80% chance that your average generic Lithium will make the promised life under normal household usage and indeed greater than 90% chance for the Pylontech to do so. If as it happens in Nigeria the naira devalues in 5 years, you may wish you had bought Pylontech once and gone to sleep.

Now why is there greater than 90% certainty that the PylonTechs will do their promised lifecycle under normal household useage conditions? See below


The Quality Comparison

PylonTechs have been used for commercial grade storage and even as grid storage/backup/buffer by European and other utility companies - this is thousands of Pylon batteries stacked in series or parallel to support a high energy demand application with ultralow failure rates - you can imagine the rigorous testing and engineering analysis behind such multimillion dollar decisions and why they chose Pylontech and did not just cobble together some generic Lithium storage to save money.

At the battery test center in Australia, the test methodology was effectively 3 rapid full charge and discharges cycles (80%-90%DoD) daily for 3 years to simulate 9 years of heavy use - the Pylons held up outstandingly under such conditions, BYDs and a few others held up but not as well.

All this objective evidence is why I say that the Pylons are really quite a few steps above a generic offering.

Now you don't have to use PylonTech but there are several very good reasons to do so.

Extra value-add features

In the bells and whistles category, the PhantomBMS inside the PylonTech is smart enough to drive a smart inverter/charger telling it exactly what to do per time. Because the battery can talk to a compatible inverter and precisely communicate voltage, charge and discharge current limits, SOC %, SOH % e.t.c you essentially have a tightly integrated system - in my Victron installs that use a GX device, you can select the PylonTech PhantomBMS as your preferred battery monitor and do away entirely with voltage sense and temperature sense cables and an external BMV and greatly simplify your install .

Further, the BMS will log errors directly to the GX and trigger an audible alarm and email notification of the issue - if the error clears, you will be notified too, the applications and benefits of an integrated system for home automation and other purposes are just endless - you get all this bundled in your purchase already and very little need to buy any additional equipment as you would in more generic systems.

I hope these few points provide some clarity on why one would choose a premium battery over generic.

Meanwhile, working with our partners, we have managed to crash PylonTech prices vs even before the Naira devaluation. Please reach out today and let us work out a nice deal for you.

truthbetold22:



.....



@niyi,

It would be lame for anyone to assume that diy lithiums would beat pylons in longevity. That would be wrong comparison. For 1, the fact that advertised cycle life for pylons is 6000 already says a lot. Price is another thing. The point however that you need to note is that if I buy grade b lithium for 1.5 million naira and you buy pylons of same capacity for 5 million naira, if my bank lasts 5 years and pylons last 10 years, I still got way better value for money than you did. I can afford to swap out after 5 years and still have great change. So it really shouldn't be about which battery would last longer, it should be about actual value for money or price per kw.

Thank you all.

Oh okies. My bad

Penuelseun:
He meant 2v 1000ah batteries × 6 pcs to make a 12v 1000ah battery bank

LegDoLand:


Hello sir, what is the brand of your batteries? I believe they are the ones you want to sell, yea?

Sure they are.
Luminous is the brand.I still feel very much attached to them.
Solar energy rules....

Monlo:


@Juo,quote me,if above is still available?
Thanks..

few pcs available

ojeysky:


Is that a typo

what is the difference between using two AC charger and two charger controllers in one bank? I know someone who has 4 charge controllers in one bank. @Niyi has more than one charge controller in one bank. Also tell me the difference when you charge with AC and solar at the same time

The Cranberra Battery Test Center Results

Purpose of Testing
Lead-acid (PbA) battery technologies have been used in energy storage applications for decades.
In recent years, however, new technologies have appeared on the market, and the range of
options for the storage of renewable energy and/or the provision of back-up power has increased
significantly .... the purpose of the battery performance testing is therefore to verify claims made by
manufacturers about performance, integration, and installation of lithium-ion battery packs, and to
disseminate the results to the public.

Project Summary
A battery test centre has been built at the Sustainable Skills Training Hub at the Canberra
Institute of Technology and performance testing has commenced. In brief this involves:
 Cycling the batteries three times a day for three years to simulate nine years’ worth of
‘normal’ daily cycling of the batteries (noting that while accelerated, this cycle rate is within
manufacturers’ specifications);
 Mimicking ‘real world’ conditions by cycling the temperature of the facility where the
batteries will be installed; and,
 Publishing performance data, including the batteries’ decrease in storage capacity over the three years of the trial, and documenting any integration challenges or issues that arise.

The key objective of the testing is to measure the batteries’ decrease in storage capacity over
time and with energy throughput. As the batteries are cycled they lose the ability to store as much
energy as when they are new.
To investigate this capacity fade, the lithium-ion batteries are being discharged to a state of
charge (SOC) between 5% and 10% (depending on the allowable limits of the BMS), while the
lead-acid batteries are being discharged to a 50% SOC (i.e. 50% of the rated capacity used). The
advanced lead battery is being be cycled between 30% and 80% SOC. These operating ranges
are in line with manufacturers’ recommendations for each technology.
Each battery pack is charged over several hours (mimicking daytime charging from the PV),
followed by a short rest period, then discharged over a few hours (mimicking the late afternoon,
early evening period) followed by another short rest period. In total, there are three
charge/discharge cycles per day.

Temperature Profile
The ITP lithium-ion battery trial aims to test batteries in ‘typical’ Australian conditions. It is
expected that most residential or small commercial battery systems will be sheltered from rain
and direct sunlight, but still be exposed to outdoor temperatures; therefore, the ambient
temperature in the battery testing room is varied on a daily basis, and varies throughout the year.
The high and low temperatures are given in Table 1.
ITP implements ‘summer’ and ‘winter’ temperature regimes for the three daily charge/discharge
cycles. In the summer months the batteries undergo two cycles at the monthly high temperature and the third at the monthly low temperature, and in the winter months the batteries undergo two
cycles at the monthly low temperature and the third at the monthly high temperature.
and the third at the monthly low temperature, and in the winter months the batteries undergo two
cycles at the monthly low temperature and the third at the monthly high temperature.

Summary of ITP Cranberra Battery Test Center Results

I extracted results only for some popular brands - see link here [url] https://batterytestcentre.com.au/wp-content/uploads/BatteryTestingReport9Sept2020.pdf [/url]

There is one battery - Sony Fortelion which actually had better results than Pylontech but I know nothing of that battery nor have I seen it anywhere in use on the field.

Pylontech US2000.

Operational Issues

ITP has not experienced any operational issues with the Pylontech battery pack.

Capacity Fade
The full discharge capacity implied by each partial cycle is depicted in Figure 6. The data suggests a SOH of ~82% after ~1,940 cycles


BYD B-Box LV/HV/HVM

Operational Issues

The previous Public Report described the failure of one the four B-Box battery modules, and BYD’s statement that the cell imbalance observed in all four modules indicated that they were faulty. BYD is currently liaising with ITP to replace the B-Box model with its most recent modular LV offering, which is planned to be cycling before the release of the next Public Report.

The BYD B-Box HV was replaced with BYD’s more recent HVM model in June
2020. There was no issue experienced with the original B-Box HV installed;
however, as the testing period had only just begun, it was considered more
valuable to replace it with the latest model. The original B-Box HV is no longer
commercially available.
In mid-July, the HVM was shut down as part of a scheduled outage. However,
this caused the battery to enter a ‘stuck’ state where it could no longer
be turned off or on. BYD was helpful in assisting and the battery started
operating again after the BCU was temporarily disconnected from the
modules.
In late August, the battery’s internal DC breaker tripped during normal
operation. Following this, the system has been unable to be turned back
on with connection to the inverter for more than a few minutes before the
battery’s DC breaker trips again. The battery LED sequence indicates an
error code; however, at present BYD is unsure of the nature of the error and
undertaking further investigation.


Tesla Power Wall 1

Operational Issues

The previous Public Report described the failure of the battery to charge
when it was turned back on after Phase 3 construction works. Tesla no
longer stocks the Powerwall 1 model and this battery is no longer being
tested under the trial.

Tesla Power Wall 2

Operational Issues

In September 2018, the Tesla Powerwall 2 identified a ‘welded relay’ fault.
Tesla suggested that this may have been related to the burnt-out terminal
block discovered following installation, although this was not confirmed and
it is unclear what caused the fault. Both the Powerwall 2 and associated
Gateway (communications and energy management hardware) were
subsequently replaced by Tesla. Cycling of the replacement Powerwall 2
commenced in late November 2018.
ITP still have no direct control over the battery (as Tesla do not allow this
level of control of their products), but rely on Tesla to implement the cycling
schedule. This requires intermittent contact with Tesla as it appears that the
control is only set for a finite period each time it is implemented.
User-friendly monitoring of the Tesla Powerwall 2 is only possible via mobile
app. Data is available from the Tesla Powerwall 2’s local web interface.
Although Tesla has not published local API documentation, community
groups of have published a tutorial on how to take data from the battery
online.2
The data used by ITP in monitoring and analysis is obtained from this
API.
The Tesla Powerwall 2 is experiencing small jumps in SOC at the end of the
discharge cycle (7% to 0%) and the start of the charge cycle (0% to 9%).

Capacity Fade
The energy discharged per cycle is depicted in Figure 8. The data suggests a
SOH of ~88% after ~1,250 cycles.


LG Chem RESU

Operational Issues

In Public Report 7, ITP described deep self-discharge of the LG Chem RESU
HV battery pack, and LG Chem’s subsequent design improvements. Prior to
Phase 3 construction works, the LG Chem battery was turned off while at
a high SOC, and the internal DC-DC converter was disconnected according
to LG Chem’s instructions. The battery was turned back on without issue
after construction works were completed. No operational issues have been
experienced since replacement of the battery in October 2018.

Capacity Fade
The full discharge capacity implied by each partial cycle is depicted in Figure
5. The data suggests a SOH of ~84% after ~1,110 cycles.

JUO:
what is the difference between using two AC charger and two charger controllers in one bank? I know someone who has 4 charge controllers in one bank. @Niyi has more than one charge controller in one bank. Also tell me the difference when you charge with AC and solar at the same time

Bro you are right, one can actually put 10 chargers on a battery bank so long as the bank meets the requirement. You will need 500A charger to charge the 12v 1000AH from low to full in 2hrs not 100A. That's why I thought you made a typo

ceaser:


As in Pylon?

Speaking of that, there was one of us here (can't recall who) that bought a Nissan Leaf battery and installed it in his solar system. I think he made a you tube video then. Did I miss the follow up updates or there was no such updates?

That will be @essegis the chairman with BYD, Nissan Leaf and cylindrical Lifepo4 cells

Monlo:


Sure they are.
Luminous is the brand.I still feel very much attached to them.
Solar energy rules....

Nice.

I may be interested in them when you are ready.

I already sent you a PM.

Thanks

NiyiOmoIyunade:
That was Oga Chris of AWPS I believe. He had quite an interesting experience DIYing a Lithium pack and he had a fire or two as well apart from ruining a few batteries.

This is why Oga GeorgeD1 keeps saying the Lithium option especially DIY is not that simple - a lot of thought needs to go in.

Before I chose PylonTech I had been told of 2 fires with LG Chem RESU - I was just moving to a new place and was not about to take any risk.....

True, that LG Chem RESU is prone to fire outbreak especially due to high temperature and poor earthing system