Honestly probably less risk than leaving a laptop in the back of the car on a sunny day. Various specs on the Dakota website if you want to check it out.
That said…I own 2 EVs and neither ever sleep in my garage…though I sometimes daily a DeLorean which is probably peak death by fire risk.
DL+ 12v 135Ah LiFePO4 Golf Cart & 1000CCA Automotive Battery. Marine & Automotive Compatibility. 135 Amp Hours of deep cycle Dakota Lithium performance.
dakotalithium.com
OPERATING TEMPERATURE
Ideal for rugged & harsh environments. Much better than SLA or other lithium batteries. -20°F min, +150°F max optimal operating temps (battery performs well down to -20°F). Internal even-heat technology allows for charging below 32°F. BMS high temp cut off at 167°F / 75°C.