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Taken from: transportation, electric / battery-toshiba-SCIB-recharged en 6-minutes-a-500kw-t15395.html

**About Lithium Air batteries, we have:**

a)

**a mass energy that can compete to see exceed liquid fuels, all corrected returns, so excellent!**

In theory, lithium-air batteries know how to store 3,5 kW.h / kg. However due to technological constraints (substrate, battery insulation ...), the actual energy density will most likely be lower. The density of 1,7 kW.h / kg supplied to the wheels can however be considered because of a better efficiency of the electric motors compared to the thermal engines

Source: https://fr.wikipedia.org/wiki/Accumulateur_lithium-air

b)

**mass power (and volume) very low compared to current Lithium batteries**

low specific power (200 W / kg - 500 W / L)

Source: https://fr.wikipedia.org/wiki/Accumulat ... ithium-air

In comparison, some current Lipo (the best) can provide up to 95 times their peak current rating!

A current Lipo which is around 0.2 kWh / kg ...

**can therefore supply power to 95C of 19 kW / kg !!**

It's really huge and it's 19 / 0.2 = 95 times what can provide a Lithium Air !! And 5 kg of battery can therefore provide, in peak, not far from 100 kW!

It's really huge and it's 19 / 0.2 = 95 times what can provide a Lithium Air !! And 5 kg of battery can therefore provide, in peak, not far from 100 kW!

But ok at these levels of discharge current, it heats up a lot and the batteries do not last very long (200 300 max cycles) when they do not explode before ... but still ...

A lipo that would work in 5C (we find no below 15C on the market) which is very reasonable would provide a power of 0.2 * 5 = 1 kW / kg ... It is still 5 times more than a Lithium Air at the power level

This means that we will not be able to draw a lot of power per kg of lithium air battery: they will therefore be reserved ... for low power or static installations, which finally cancels all the benefit of an interesting mass energy

**And to finish the comparative calculation, a Lithium Air can work with 200 / 1700 = 0.12 C ... it is 800 times less than a Lipo 95C ...**

After the research ... but all the same ... the Lithium Air revolution will not be possible any time soon ...