Ideal Drop-in Lifepo4 Battery Purchase Strategy

[Uncle Bob]

Originally Posted by Baronkrak

Could be irrelevant
According to the manufacturer of my deep cycle LA batteries, their batteries can be:
“ Run it down and recharge it over and over again." dated 1991

Curiosity has gotten the better of me, just what brand/manufacturer are these wonder batteries of yours ?

[Baronkrak]

Originally Posted by Uncle Bob

Curiosity has gotten the better of me, just what brand/manufacturer are these wonder batteries of yours ?

Nothing amazing, just a good quality battery from a good brand. What would be amazing is to find people that care to use them appropriately.
“over and over again.” Means: 20 hours discharge plus 24 hours recharge time at 10A means about 200 cycles per years, nothing amazing about that. Recharge time can be as low than 6 hours with a 40A proprietary charger.
They retail at the present time, in Sydney, for $224.25 a piece Inc GST. I am at the third generation of these batteries and started in 1991.
Definitely more reliable than my troublesome Victron LiFePo4, sorry Maine Sail, lead is not dead.

[GILow]

Originally Posted by Baronkrak

Nothing amazing, just a good quality battery from a good brand. What would be amazing is to find people that care to use them appropriately.

“over and over again.” Means: 20 hours discharge plus 24 hours recharge time at 10A means about 200 cycles per years, nothing amazing about that. Recharge time can be as low than 6 hours with a 40A proprietary charger.

They retail at the present time, in Sydney, for $224.25 a piece Inc GST. I am at the third generation of these batteries and started in 1991.

Definitely more reliable than my troublesome Victron LiFePo4, sorry Maine Sail, lead is not dead.

Ok, so which brand? You seem to think they are great, why not tell us what they are so the rest of us can benefit from your experience?

[Uncle Bob]

Originally Posted by GILow

Ok, so which brand? You seem to think they are great, why not tell us what they are so the rest of us can benefit from your experience?

Ditto, AGAIN.

[s/v Jedi]

A wild guess: SuperCrank?

[GILow]

Originally Posted by s/v Jedi

A wild guess: SuperCrank?

ROFL.

[Pete7]

Originally Posted by SOLAR SUPPORT

Pete7,
Why would someone who replaces their batteries with LFP batteries praise LA battery technology? If you were able to get the energy of LFP batteries from LA batteries of the same capacity and you were happy with your LA batteries, why did you replace them with LFP batteries?

I have no idea what you are talking about

I haven't replaced anything, I created a hybrid LFP and LA battery bank (paralleled) which suits our needs perfectly.

Why did we do this? Simple, on a smaller yacht (31 feet) you can't afford the space or weight of a large domestic house bank needed if you want to try electric cooking with a longer term aim of getting rid of gas. Adding LFP has increased the capacity for only half the weight increase. Allows very fast charging even with every charging device on board we can't exceed the LFP limits. Finally, enables short term high discharges for items like electric kettle and induction.

Again, I think you need to stop preaching to the converted. There are many battery threads on CF for you to learn from.

Peter

[SOLAR SUPPORT]

Originally Posted by Pete7

I have no idea what you are talking about

I haven't replaced anything, I created a hybrid LFP and LA battery bank (paralleled) which suits our needs perfectly.

Why did we do this? Simple, on a smaller yacht (31 feet) you can't afford the space or weight of a large domestic house bank needed if you want to try electric cooking with a longer term aim of getting rid of gas. Adding LFP has increased the capacity for only half the weight increase. Allows very fast charging even with every charging device on board we can't exceed the LFP limits. Finally, enables short term high discharges for items like electric kettle and induction.

Again, I think you need to stop preaching to the converted. There are many battery threads on CF for you to learn from.

Peter

What need do you have to preach to boat owners who use LA batteries? I think you should rethink that. LA batteries have very low qualifications that cannot be compared with LFP batteries. While many issues were discussed for the LFP battery transition, it was not necessary to focus on the comparison of two very different battery types. Are you talking about the Hybrid LA-LFP setup? It is Ok, everyone, including me, will want to hear about your experience..

[Uncle Bob]

Originally Posted by Uncle Bob

Curiosity has gotten the better of me, just what brand/manufacturer are these wonder batteries of yours ?

Originally Posted by GILow

Ok, so which brand? You seem to think they are great, why not tell us what they are so the rest of us can benefit from your experience?

Originally Posted by Uncle Bob

Ditto, AGAIN.

Originally Posted by s/v Jedi

A wild guess: SuperCrank?

So it would appear that our baron is not prepared to divulge the maker or brand of these wonder batteries, makes me wonder if Jedi is correct and there is a supercrank at play here.

[PaulCrawhorn]

There is no objective measure of stored Ah without including the CC discharge rate.

10.5V is "dead empty" for cap test benchmark purposes, the definition of 0% SoC

and yes, means MUCH shorter cycle longevity, any lead battery will get far more than triple or more lifetime cycles by averaging 40-60% DoD compared to say 20%.

Any vendors claiming otherwise are idiots or fraudulent, very common in the southern hemisphere.

I will not be paying attention to any of the Baron's assertions on the topic

Originally Posted by Baronkrak

It is not possible to discharge too far.





Not at all, the usable energy can be equal to the stored energy.

[Baronkrak]

Originally Posted by s/v Jedi

A wild guess: SuperCrank?

What brand is that?

Anyway, to name one brand would be unfair to other good brand.
A word of warning, extracting more current than a deep cycle battery is designed for to deliver, can cause internal damage and even make the battery to explode.

“HOWEVER, the voltage drop when drawing much over 1500 watts from the Trojan battery bank was pretty bad.”

Capacity Minutes
@25 Amps 447
@75 Amps 115

In any case it is good to remember car manufacturers advice: if one’s cannot get the mileage advertised, review the driving habits.

Originally Posted by Mike OReilly

I'm beginning to suspect you may be close to the truth.

[Baronkrak]

Originally Posted by PaulCrawhorn

There is no objective measure of stored Ah without including the CC discharge rate.

10.5V is "dead empty" for cap test benchmark purposes, the definition of 0% SoC

and yes, means MUCH shorter cycle longevity, any lead battery will get far more than triple or more lifetime cycles by averaging 40-60% DoD compared to say 20%.

Any vendors claiming otherwise are idiots or fraudulent, very common in the southern hemisphere.

I will not be paying attention to any of the Baron's assertions on the topic

Another expert opinion from an IT.

Information technology (IT) is the use of any computers, storage, networking and other physical devices, infrastructure and processes to create, process, store, secure and exchange all forms of electronic data.

[Uncle Bob]

Originally Posted by Baronkrak

Another expert opinion from an IT.

Information technology (IT) is the use of any computers, storage, networking and other physical devices, infrastructure and processes to create, process, store, secure and exchange all forms of electronic data.

AHH, I get it now, battery manufacturers, vendors and experienced consumers are all ignorant and/or wrong, you are the shining (battery) light.

[Baronkrak]

Originally Posted by Uncle Bob

..I get it now,

I'm not so sure.

[SOLAR SUPPORT]

.....