BYD has raised lithium-iron phosphate Wh per liter up to lithium-ion levels. Wh per kilogram is still maybe half that of lithium-ion.
BYD "Blade battery 1": 168 Wh/kg. 448 Wh/L. Shipping now.
BYD "Blade battery 2": 210 Wh/kg. Announced for 2025. [1]
Tesla current lithium ion battery: 260 Wh/kg. 416 Wh/L[2]
(Tesla also uses lithium iron phosphate, in their lower-end cars.)
Close on size, big difference on weight. Weight differential is narrowing.
At this point, all fixed installations should be lithium iron or better. There's no excuse for big lithium-ion battery fires such as Moss Beach and the Port of Los Angeles any more.
Solid state batteries with better density are coming along, but nobody has those in volume production yet.
(Incidentally, if you ask questions like this to search engines that use an LLM, the results may be bogus, as they tend to pick numbers from the wrong places. Check the references.)
On Smartphone, First generation silicon-carbon battery, or lithium-ion battery with a silicon-carbon anode is shipping already at ~23% higher capacity. 2nd Generation is shipping this year at 40% increase over original. And hopefully 50% next year. With expected 100-200% increase by 2035.
> "Wh per kilogram is still maybe half that of lithium-ion."
At the pack level, it seems to be a lot less than that. If you compare a Tesla Model Y standard range (with LFP pack) to a Model Y long range (with NMC), you're looking at around 62 kWh vs 80 kWh for the latest versions, putting the difference in energy density at < 30%.
BYD "Blade battery 1": 168 Wh/kg. 448 Wh/L. Shipping now.
BYD "Blade battery 2": 210 Wh/kg. Announced for 2025. [1]
Tesla current lithium ion battery: 260 Wh/kg. 416 Wh/L[2]
(Tesla also uses lithium iron phosphate, in their lower-end cars.)
Close on size, big difference on weight. Weight differential is narrowing.
At this point, all fixed installations should be lithium iron or better. There's no excuse for big lithium-ion battery fires such as Moss Beach and the Port of Los Angeles any more.
Solid state batteries with better density are coming along, but nobody has those in volume production yet.
(Incidentally, if you ask questions like this to search engines that use an LLM, the results may be bogus, as they tend to pick numbers from the wrong places. Check the references.)
[1] https://electric.guide/renewable-energy-storage/byd-blade-ba...
[2] https://en.wikipedia.org/wiki/Lithium-ion_battery