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First sodium-ion battery storage station at grid level opens with cells that can be charged in 12 minutes (www.notebookcheck.net)
submitted 2 years ago by to c/technology@lemmy.ml
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[–] 28 points 2 years ago* (8 children)

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.

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  • [–] 11 points 2 years ago (6 children)

    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.

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  • [–] 3 points 2 years ago (3 children)

    The C rating is for discharging only.

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  • [–] 10 points 2 years ago (2 children)

    The C rating can absolutely still be used when talking about recharging, it's just usually less relevant.

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  • [–] 1 point 2 years ago

    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.

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