First sodium-ion battery storage station at grid level opens with cells that can be charged in 12 minutes
https://www.notebookcheck.net/First-sodium-ion-battery-storage-station-at-grid-level-opens-with-cells-that-can-be-charged-in-12-minutes.836720.0.html
300 points · 34 comments · view on lemmy.world
34 Comments
blazera@lemmy.world · 69 pts · 2y
Time until full charge isnt really a relevant metric for utility storage, you want larger storage, which would increase full charge time. Rate of charge is what matters.
0110010001100010@lemmy.world · 27 pts · 2y
210 Ah cells to 90% in 12 minutes.
Assuming I can math early on a Monday morning:
90% of 210 is 189
189 / 12 is 15.75
So they charge at 15.75 an Ah per minute. Not sure how that compares honestly.
fuckwit_mcbumcrumble@lemmy.dbzer0.com · 12 pts · 2y
The C rating is generally what battery charging (and discharging) is measured in. C being the capacity of the pack. So if the pack is 10 Ah and it takes 10 hours to charge it's 1c, if it takes 1 hour to charge then it's 10c.
I found this high current battery pack that's rated for 30c. https://www.lipobattery.us/high-discharge-lithium-ion-battery-30c-2/
I don't feel like doing the math for this battery pack.
pearsaltchocolatebar@discuss.online · 2 pts · 2y
The C rating is for discharging only.
BlameThePeacock@lemmy.ca · 11 pts · 2y
The C rating can absolutely still be used when talking about recharging, it's just usually less relevant.
pearsaltchocolatebar@discuss.online · 3 pts · 2y
No. The C rating is a cell's maximum discharge rate without damaging the cell.
You absolutely can't charge that 30C battery at 30A
cmnybo@discuss.tchncs.de · 8 pts · 2y
Batteries have separate C ratings for charge and discharge.
B0rax@feddit.de · 1 pts · 2y
You are not completely right. 1 C means it can (theoretically) be charged in 1h. Regardless of the capacity.
10 C means it can be charged in 1/10th of an hour.
To get the maximum current, multiply the capacity by the C rating.
Cort@lemmy.world · 1 pts · 2y
So like 4-5c roughly if the 90-100% charge rate is similar to the 0-90%. Way lower than some of the lithium cells I've seen at 30+c
Revan343@lemmy.ca · 2 pts · 2y
ChicoSuave@lemmy.world · 14 pts · 2y
They're brand new and the writer needs a number to look impressive.
delirious_owl@discuss.online · 1 pts · 2y
And last decades
umbrella@lemmy.ml · 1 pts · 2y
pingveno@lemmy.ml · 17 pts · 2y
I'm curious what the temperature resiliency is for sodium-ion batteries. I had a power outage recently where I was relying on a lithium-ion battery. As the temperature in the house plunged, it because so inefficient that charging a single phone overnight drained a quarter of the battery.
johnyma22@lemmy.ml · 10 pts · 2y
Source: https://batteryuniversity.com/article/bu-502-discharging-at-high-and-low-temperatures
I don't have any data on sodium-ion.
pingveno@lemmy.ml · 5 pts · 2y
It was slightly above freezing in the house, so definitely not operating at peak efficiency. From a brief search, it looks like sodium-ion does have a similar temperature sensitivity, though it may be to a different degree.
schizoidman@lemmy.ml · 3 pts · 2y
If I'm not mistaken, those portable power stations with AC inverters consume power even when not in use. You probably should use the DC output wherever possible.
pingveno@lemmy.ml · 2 pts · 2y
It has outputs through USB-A, USB-C, AC, and DC-vehicle (whatever it's called). I think the AC inverter was off, though I had been using it earlier. I was definitely charging fully through the USB-C output. Good point, though.
zik@lemmy.world · 3 pts · 2y
They're meant to have a much wider temperature range than Li-ion, theoretically.
LowtierComputer@lemmy.world · 2 pts · 2y
What size? That sounds like a little 2000mah power bank.
pingveno@lemmy.ml · 1 pts · 2y
That's the thing, it wasn't. It's an Ecoflow Delta Power Station, We tested boiling 1.5 liters of water off it and it used 15% of the capacity. Meanwhile, charging the phone overnight drained 30%.
Valmond@lemmy.world · 4 pts · 2y
That doesn't seem normal. Did you like use the phone all night otherwise it should charge up quickly and then not use any noticeable energy.
pingveno@lemmy.ml · 3 pts · 2y
You would think, but we went directly to bed with as many blankets and coats as we could find. Just plug it in and let it charge. The phone has a maximum power draw of maybe 20W when speed charging. Not exactly boiling water.
ripcord@lemmy.world · 2 pts · 2y
I need to do some more formal testing, but I've found the discharge rate of my ecoflow to be baffling compared to my Jackery or a big Bluetti I have. My experience has been similar to yours.
Which has surprised me because in general I've only heard good things about them.
pingveno@lemmy.ml · 2 pts · 2y
Did you find it was connected to temperature or other drop offs in capacity?
the_third@feddit.de · 1 pts · 2y
hglman@lemmy.ml · 2 pts · 2y
Battery temp is certainly a problem. Hard to compare between y'all's stories what the issues are.
mipadaitu@lemmy.world · 9 pts · 2y
Wonder if there's a trade off with the faster charging, or if it's just a side effect of the grid power setup.
delirious_owl@discuss.online · 5 pts · 2y
How many decades do they last before needing replacement?
zik@lemmy.world · 10 pts · 2y
They're meant to survive an order of magnitude more cycles than Li-ion. But I'm containing my enthusiasm until we see them lasting a long time in real life use.
delirious_owl@discuss.online · 1 pts · 2y
Lithium isn't used for grid batteries because weight doesn't matter. Grid batteries with lead acid last 3 decades. Does this one last longer?
zik@lemmy.world · 3 pts · 2y
Lithium is used in grid storage:
And that's just what I could find in a couple of minutes.
the_third@feddit.de · 1 pts · 2y
delirious_owl@discuss.online · -2 pts · 2y
Again, that doesn't matter since the battery doesn't move. This is a grid battery
the_third@feddit.de · 5 pts · 2y
Allero@lemmy.today · 1 pts · 2y
The question is then whether it's cheaper to buy LiFePos instead of lead acid or to install more solar panels.
the_third@feddit.de · 2 pts · 2y
capital@lemmy.world · 1 pts · 2y
You’re thinking of density. Efficiency certainly matters.
Valmond@lemmy.world · 5 pts · 2y
I have read encouraging numbers about charge cycles for sodium batteries, I'm quite curious too about real values.