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An upgrade for 10 years down the road when the Pylontechs fail.

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Moxi wrote: ↑Wed Jan 19, 2022 11:48 am Won't you get more than ten years out of the pylons then JB? I thought they were good for 6000 plus cycles ? more if treat to lower DoD - not sure 10 years will be enough to bring Quantum batteries to the market and for market forces to bring their costs down to a level within our fiscal grasp ?

I must be tired today as I am still trying to get my head around the concept for the Q battery - thus far its failing the sounds to good to be true test, but not so tired as to not want it to be true, cheap to make and a global game changer for the good of all human kind !

Moxi

10 years use for the drama only. I expect to get well beyond a decade. At the moment I am in year 5 and have lost 4% soh. They could legitimately run for 20 years but I don't want to say that much as its early days. I run the system from 100% soc all the way down to 10%. Have done since new, also in a cold garage which I think will help their longevity. I am interested in the batteries being of no use at 80%. Might be worth an array stripdown to ID the worst prismatic pouches and keep going. Hope to still be around to see it!

Fingers crossed for the quantum battery!

Joeboy wrote: ↑Wed Jan 19, 2022 12:54 pm I am interested in the batteries being of no use at 80%. Might be worth an array stripdown to ID the worst prismatic pouches and keep going. Hope to still be around to see it!

That is for Lead Acid batteries as once they get to about 70% to 80% of original capacity, their days are numbered. But lithium just keep slowly losing capacity down to very low levels, so battery manufactures tend to count cycle life down to 50% of capacity left. But even at that level there is still life left in them and they don't increase in internal resistance as lead acid do so there is no loss of efficiency.

nowty wrote: ↑Wed Jan 19, 2022 5:41 pm

Joeboy wrote: ↑Wed Jan 19, 2022 12:54 pm I am interested in the batteries being of no use at 80%. Might be worth an array stripdown to ID the worst prismatic pouches and keep going. Hope to still be around to see it!

That is for Lead Acid batteries as once they get to about 70% to 80% of original capacity, their days are numbered. But lithium just keep slowly losing capacity down to very low levels, so battery manufactures tend to count cycle life down to 50% of capacity left. But even at that level there is still life left in them and they don't increase in internal resistance as lead acid do so there is no loss of efficiency.

Good to know Nowty, thanks. Blowing a hooly up here today. Did you get the window beading finished?

Joeboy wrote: ↑Wed Jan 19, 2022 12:54 pm

Moxi wrote: ↑Wed Jan 19, 2022 11:48 am Won't you get more than ten years out of the pylons then JB? I thought they were good for 6000 plus cycles ? more if treat to lower DoD - not sure 10 years will be enough to bring Quantum batteries to the market and for market forces to bring their costs down to a level within our fiscal grasp ?

I must be tired today as I am still trying to get my head around the concept for the Q battery - thus far its failing the sounds to good to be true test, but not so tired as to not want it to be true, cheap to make and a global game changer for the good of all human kind !

Moxi

10 years use for the drama only. I expect to get well beyond a decade. At the moment I am in year 5 and have lost 4% soh. They could legitimately run for 20 years but I don't want to say that much as its early days. I run the system from 100% soc all the way down to 10%. Have done since new, also in a cold garage which I think will help their longevity. I am interested in the batteries being of no use at 80%. Might be worth an array stripdown to ID the worst prismatic pouches and keep going. Hope to still be around to see it!

Fingers crossed for the quantum battery!

Well , year 5 is already some history

Maybe you have already documented your battery?? , but i am curious about details , of how to connect , how they monitor , how they communicate ,
is each Module connected to each other to increase capacity , or each module acting as a single provider to the power requirements ?

And where to buy

Anyway just curious and scared as you might know, am from the lead acid league but it is a honest request

billi wrote: ↑Thu Jan 20, 2022 7:54 am

Joeboy wrote: ↑Wed Jan 19, 2022 12:54 pm

Moxi wrote: ↑Wed Jan 19, 2022 11:48 am Won't you get more than ten years out of the pylons then JB? I thought they were good for 6000 plus cycles ? more if treat to lower DoD - not sure 10 years will be enough to bring Quantum batteries to the market and for market forces to bring their costs down to a level within our fiscal grasp ?

I must be tired today as I am still trying to get my head around the concept for the Q battery - thus far its failing the sounds to good to be true test, but not so tired as to not want it to be true, cheap to make and a global game changer for the good of all human kind !

Moxi

10 years use for the drama only. I expect to get well beyond a decade. At the moment I am in year 5 and have lost 4% soh. They could legitimately run for 20 years but I don't want to say that much as its early days. I run the system from 100% soc all the way down to 10%. Have done since new, also in a cold garage which I think will help their longevity. I am interested in the batteries being of no use at 80%. Might be worth an array stripdown to ID the worst prismatic pouches and keep going. Hope to still be around to see it!

Fingers crossed for the quantum battery!

Well , year 5 is already some history

Maybe you have already documented your battery?? , but i am curious about details , of how to connect , how they monitor , how they communicate ,
is each Module connected to each other to increase capacity , or each module acting as a single provider to the power requirements ?

And where to buy

Anyway just curious and scared as you might know, am from the lead acid league but it is a honest request

Connected to each other to increase capacity up to 8 modules. 48v system all tied back into a hybrid inverter with an onboard bms which monitors voltage and temperature of stack and adjusts charge rate accordingly.i started with 2 modules and now at our personal goldilocks of six. Sourced from all over. Triple solar on ebay, ITS an online source. Tried a 2nd hand unit once and got money back as goosed. Have paid from £675 up to £750 each I think. Nowty runs his without bms but I'm assuming you'd change an inverter to step up to the 48v spec?

billi wrote: ↑Thu Jan 20, 2022 7:54 am

Joeboy wrote: ↑Wed Jan 19, 2022 12:54 pm

Moxi wrote: ↑Wed Jan 19, 2022 11:48 am Won't you get more than ten years out of the pylons then JB? I thought they were good for 6000 plus cycles ? more if treat to lower DoD - not sure 10 years will be enough to bring Quantum batteries to the market and for market forces to bring their costs down to a level within our fiscal grasp ?

I must be tired today as I am still trying to get my head around the concept for the Q battery - thus far its failing the sounds to good to be true test, but not so tired as to not want it to be true, cheap to make and a global game changer for the good of all human kind !

Moxi

10 years use for the drama only. I expect to get well beyond a decade. At the moment I am in year 5 and have lost 4% soh. They could legitimately run for 20 years but I don't want to say that much as its early days. I run the system from 100% soc all the way down to 10%. Have done since new, also in a cold garage which I think will help their longevity. I am interested in the batteries being of no use at 80%. Might be worth an array stripdown to ID the worst prismatic pouches and keep going. Hope to still be around to see it!

Fingers crossed for the quantum battery!

Well , year 5 is already some history

Maybe you have already documented your battery?? , but i am curious about details , of how to connect , how they monitor , how they communicate ,
is each Module connected to each other to increase capacity , or each module acting as a single provider to the power requirements ?

And where to buy

Anyway just curious and scared as you might know, am from the lead acid league but it is a honest request

The pylontech batteries form a “stack” with each one connected to the next. The come with short power and data cables allowing this. You can buy longer cables to connect the stack to your inverter/busbar. The top battery in the stack communicates with your inverter (or whatever) giving SoC %, max charge current, max discharge current, etc., and presents itself as one big battery.

The older Pylontech batteries had a max of 8 in a stack, the newer ones 16. You can buy a piece of hardware to combine 4x stacks into a single “battery”.

ITS (https://www.itstechnologies.shop/) is a good place to buy them. Me and others on here have had good luck making “best offers” on eBay.

wow that was fast ....

So system design for a house should be 48 Volt ? as that is the Battery voltage of each module

8 modules

sounds plenty

tied back into a hybrid inverter with an onboard bms

So one needs a specific inverter that controls those several battery units ? Or are the individual (think 2.4 kWh each ) units not taking care about each of their cells ?..... Ok still early in the morning but i found infos .... 6000 cycles sounds.... amazing