15th birthday of a lifepo4 battery bank

Not my system, but impressive age none the less

I fackin agree with that guy.

makes me feel even better about my winston purchase. regardless if yttrium actually helps with lower temperatures, or if it was simply a method of screwing over a former business partner if I get 15 years I will be more than happy with my purchase.

FLOAT is best at Normal Voltage WHEN the battery packs are actually working with charge/discharge on a daily basis. IF Charge/Discharge is not consistent/constant and you sit for a month + @ Float then at a lower voltage is best. All depends on use case, as they are not intended to sit static for long, float or not. 15 Years of using a MODERATE Profile and not charging above 3.450 Volts per Cell and floating at 3.375 with a pack that is fairly "static" as in not charging/discharging daily as in real world.

houseofancients said:

Not my system, but impressive age none the less

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Thank you for his information
JC.

Simply put, LFP is awesome.
This is why I always say that my great grandchildren will be the ones to replace my batteries.

There is an IRONY in his video.
Where he says he's got a shed full of dead cells that he killed by over/under charging, freezing etc... THERE IS VALUE THERE ! In the form of Lessons that Verify FACTS...
* Do not charge when below 0C/32F and then only limitedly till @ 5C/41F.
* Do not charge Over the Working Voltage Range (3.450V per cell) or go below 2.650V per cell. Use from 2.900-3.400.
* Daily full voltage float is OK for "working packs" (charging/discharging daily)
* Storage Float Voltage should be lower when packs are essentially "static".
* DO Compress (FIX not squeeze) the cells to prevent excessive expansion-swelling and stress on terminals. DO NOT SQUISH THEM UNDER PRESSURE!

Few other nuggets to take away if you haven't seen them posted here already.

He did verify some of that, but not all.
He didn't compare compressing or without. (He only chose compressing)
He didn't really compare floating at different voltages. (He only chose a voltage)
He didn't only charge in the "working voltage range" exclusively.

He did verify the commonly known things.
Don't charge below freezing. (Or at least be extremely limiting)
Don't charge above 3.65v per cell.
And LFP will last for a very long time, as solar storage batteries.

A great video thank you.

I still have another 5 years to catch up.
Our Sinopoly 4 cell 300Ah LiFePO4 battery has survived just 10 years of full-time RV travel.
I guess it will be the added stress and abuse of the additional few thousand engine starts forced on the battery that could reduce its lifetime to just 20 years!

Correct

So what's the max discharge rate before a battery like this starts to shorten its life?

scubadoo said:

A great video thank you.

I still have another 5 years to catch up.
Our Sinopoly 4 cell 300Ah LiFePO4 battery has survived just 10 years of full-time RV travel.
I guess it will be the added stress and abuse of the additional few thousand engine starts forced on the battery that could reduce its lifetime to just 20 years!

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It's used as a starter battery? That's impressive.