California firefighters had to douse a flaming battery in a Tesla Semi with about 50,000 gallons (190,000 liters) of water to extinguish flames after a crash, the National Transportation Safety Board said Thursday.

In addition to the huge amount of water, firefighters used an aircraft to drop fire retardant on the “immediate area” of the electric truck as a precautionary measure, the agency said in a preliminary report.

Firefighters said previously that the battery reached temperatures of 1,000 degrees Fahrenheit (540 Celsius) while it was in flames.

The NTSB sent investigators to the Aug. 19 crash along Interstate 80 near Emigrant Gap, about 70 miles (113 kilometers) northeast of Sacramento. The agency said it would look into fire risks posed by the truck’s large lithium-ion battery.

  • comador
    link
    fedilink
    23
    edit-2
    7 days ago

    189.27 metric tons of water, so yes, rounded up, 190 tons.

    Or roughly 2.5 average swimming pools and for those ex-redditors out there: 1.6 million bananas

    • Avid Amoeba
      link
      fedilink
      117 days ago

      Something tells me that we have to move away from cobalt/manganese chemistries for BEVs.

      • @Mihies
        link
        87 days ago

        Solid state batteries are supposedly much more fire resistant.

          • @Mihies
            link
            37 days ago

            Yes, true. Albeit they have worse energy density and some advantages as well.

      • comador
        link
        fedilink
        57 days ago

        Because we are discussing metric tons of water where 264.17 US gallons = 1 metric ton of fresh water @ 4’C

        • Billiam
          link
          fedilink
          16 days ago

          Hmm… I’m gonna guess that water was much hotter than 4°C, what with being used to put out a fire and all.

    • @[email protected]
      link
      fedilink
      3
      edit-2
      7 days ago

      What size is an average swimming pool area-wise? Or are you talking about Olympic size swimming pools?

      • comador
        link
        fedilink
        57 days ago

        Feet: 16’ x 32’ w/ a 4’ shallow end and an 8’ deep end filled with fresh water at an exact temperature of 39.2’F.

        Metric: 4.9m x 9.7m w/ a 1.2m shallow end and a 2.4m deep end filled with fresh water at an exact temperature of 4’C.