Using the 3.7V nominal voltage for a lithium cell, that puts the Blade Battery at 10kWh - I think the price provided is for over the entire life of the battery which works out to 10000x10kWh*$0.014/10kWh, which is $140 per kWh. Not expensive, but not particularly remarkable considering modern pack prices.

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abdullahkhalids 2 days ago | parent | next [-]

Another grid-scale Chinese battery got bids for ~US$66 last year [1]. So this is twice as expected but maybe the other battery won't have as many cycles.

[1] https://reneweconomy.com.au/mind-blowing-battery-cell-prices...

	▲	toomuchtodo 2 days ago \| parent [-]
		A recent (July 2025) winning bid was $US51.59/kWh. https://reneweconomy.com.au/watershed-moment-big-battery-sto... > The latest auction in China offered 25 gigawatt hours of capacity for lithium iron phosphate (LFP) batteries over a range of storage periods – 1 hour, 2 hour and 4 hours – and the results (the first time they have been broken down on storage duration) have stunned even seasoned onlookers. The knockout price was a bid of $US51.59/kWh for a four hour battery (the average was $US59/kWh), which Energy Storage News says represents a 30 per cent drop from 2024 levels, and others side was a 15 per cent fall from recent record lows. It would be exciting if the price continues to decline 15-30 percent per year. Unsure if that’s sustainable at current manufacturing and learning rates, but exciting.

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onraglanroad 2 days ago | parent | prev [-]

That calculation doesn't make any sense. I mean you both multiply and divide by 10kWh, so those cancel out and you end up with just $ (not "per" anything).

What's that supposed to be the price of?

I guess if you have 10,000 cycles and one kWh costs $0.014, then that's just the cost of 10,000 kWh.

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torginus 2 days ago | parent [-]

I calculated the cost of the pack from the data at $140 for 1kWh. I guess I shouldn't have included the kWh in the divisor but

(10000x3.7V2710Ah$0.014) <- total cost of the pack

10 <- normalize to 1kWh

$140

	▲	mchusma 2 days ago \| parent [-]
		This makes more sense than battery costs dropping 99%. I was confused by op, and wish it were true. It’s more like 10x solar than 1/10th solar.