RE: RE I've just sent13 Aug 2020 10:22
dubmaskullanga - great work in finding that second resource. The key statement is on page 90:-
"From this calculation, the expected heat of combustion (heat output from the combustion) of an individual 18650 cell is
approximately 280 kJ. The individual cells in the battery pack likely contain between 7 and 11 Wh (25 and 40 kJ) of energy when fully charged."
Thus the heat of combustion of a Lithium-ion cell is approximately 10 times the electrical energy storable in that device.
50MWh is equal to 50 x 3600 MegaJoules = 180 Gigajoules. This is the electrical energy storable. The potential energy produced in a fire or explosion is ten times this - so the approx 1800 Gigajoules you have outlined.
This 1800 GJ is approximately half of the 3850 GJ liberated of the 2700 Tonnes of Ammonium Nitrate stored at beirut port. The Beirut explosion had an equivalent force of 1,800 tonnes of TNT thus the Coventry battery is equivalent in energy to around 900 tonnes of TNT