Yeah @user990, much depends on the chemical makeup of the lithium battery? If it’s lithium ion, you can use water, but massive quantities are required! If it’s lithium metal, you need specialist type D equipment… From what I have read about lithium fires, especially EV fires, the firefighters just let them burn, usually it takes approximately 2 hours for an EV to burnout, they will burn without oxygen, intensive use of water only has a cooling effect as it will continue to reignite… When I had a BMW i3 EV, Insurance premiums were excessively high, and only certain insurance companies would actually cover you, for me at least, approximately 4 times my normal premium, and I couldn’t fathom the extra cost, I now, kinda understand why, a complete carbon fibre shell, and a fire hazard…Tis also kinda scary, with the amount of large & small lithium batteries that I have around my house, several KW Hours… Cheers Kev 