Comments by "Clyde" (@Clyde-2055) on "FOUR MORE lives lost in Tesla fireball crash | MGUY EV News 25 October 2024 | MGUY Australia" video.
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That’s actually a good question. Here’s the quick answer.
“BEV (Battery Electric Vehicle) lithium-ion battery fires are generally considered worse than hybrid lithium-ion battery fires because BEVs contain a significantly larger battery pack with more energy density, which can lead to a more intense and prolonged fire when damaged, making them harder to extinguish and potentially causing more damage due to the "thermal runaway" effect where a single cell's fire can spread rapidly to others within the battery pack” — Google
Please note the the above is comparing Li-ion batteries across vehicle types.
Statistics indicate that BEV’s do not catch fire more frequently than hybrids. In fact, less, mainly because of the sophistication of MOST BEV’s BMS (battery management system). Be warned, not all BMS’s are created equal. Further, hybrids also have the added fire potential from the petrol engine.
Now, the crux of the matter.
Many HEV’s use NiMH (nickel-metal hydride) batteries instead of Li-ion batteries. NiMH batteries are not as fire-prone as Li-ion ones.
“Compared to Lithium-Ion (Li-Ion) batteries, Nickel-Metal Hydride (NiMH) batteries have a significantly lower fire risk, as Li-Ion batteries are more prone to catching fire when damaged or improperly handled due to their higher energy density and potential for thermal runaway, while NiMH batteries are generally considered much safer in terms of fire hazards.” — Google
I hope this helps. Happy motoring …
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