MG's Semi Solid State Battery

Slightly confused here by those statements as NMC is more energy dense than LFP.
So if SSS is the same energy density as LFP, then how does a 54 kWh SSS have the same range as 64kWh NMC ? After all a kWh is a kWh regardless of being SSS, LFP or NMC.
The 64kWh pack isn't in the same car - there's no 64kWh option for the MG4 Urban at present. The MG4 Urban is significantly more efficient than the (refreshed) MG4. The standard 54kWh LFP MG4 Urban has a quoted range of 250 miles, only 30 miles less than the MG4 64kWh with NMC, so the range improvement isn't massive.

The Octovalve and other improvements make this new platform a significant step forward.

Future versions of the SSS battery are promised with up to 400Wh/kg, but this first generation is around 180Wh/kg (more typical of LFP than NMC).
 
Is it just my mind... or do others think a semi solid state battery sounds as if it will be a bit of a disappointment? 🤷‍♀️ 😊
It will underwhelm initially but there's good potential. The question is whether other battery types or chemistries will overtake it.

It is a bit like all of these things: we are told Sodium batteries are the future due to their price potential, but when???

Don't forget, in China they no longer sell the regular MG4, the Urban is the replacement, so they could produce an XPower variant using a SSS battery (good for rapid discharge).
 
It will underwhelm initially but there's good potential. The question is whether other battery types or chemistries will overtake it.

It is a bit like all of these things: we are told Sodium batteries are the future due to their price potential, but when???

Don't forget, in China they no longer sell the regular MG4, the Urban is the replacement, so they could produce an XPower variant using a SSS battery (good for rapid discharge).
Sodium ion cells charge faster, last longer, have a much better operating temp range, but at the moment, only the same energy to weight ratio as LFP.

The holy grail is still solid state, semi solid state just means it isn't solid state yet, and a lot of manufacturers have already been there with the "some liquid electrolyte" and haven't gone to market with them .... so there must be a reason ....
Plenty of manufacturers have made full solid state cells, the cycle life is the killer, if you can't show 7,000 cycles and still retain 80% capacity, it's not worth moving to the production stage, they would be trying to compete with cells that show 10,000 cycles and 90% capacity retention, at half the price
The idea of 1,000km range has started to fade as a better faster recharging network is being rolled out.

Realistically, the average driver is limited to around 300kms before needing a nature stop and stretching the legs, if you can add another 300kms in 30 mins, the need for more battery capacity is then moved to vehicles that need to drag or carry a load.
That is a much smaller market at the moment, it will grow, and rapidly one it's proved they can travel 300kms fully loaded and recharge or swap out batteries faster than refuelling a truck, same deal, nature/coffee stop and away you go again.
This would be for private non commercial drivers towing a caravan or driving a motorhome or campervan towing a trailer, commercial heavy vehicle drivers have a requirement for longer breaks .... another topic

T1 Terry
 
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