I have lithium polymer chevy bolt batteries used in my solar setup. Yes these are a fire risk if not charged properly. They must have a BMS to consider using safely. I would not recommend any lithium chemistries except Lithium Iron Phosphate otherwise know as LIFEPO4 or lifepo and other abbreviations. Usually the 30 second max on high discharge cells is 2or 3 times the amp rating or constant discharge rating also known as the 1C rating. I also doubt the friend was using lithium iron phosphate cells.
Another good thing about the right cell combo is the battery contains more energy in it for the cells in video about 3x more energy than a high capacity lead acid battery used in our CRD s . Because of this you could use a timer and 110v inverter to come on say an hour or 2 before work etc and pre heat with the block heater to make starting easier. In fact you could probably heat the block 10 hours or more without compromise to starting power of the battery.
_________________ 05 Blu LIM, OME GDE Tbo, wk II 245/75/17, KC Lights, bull bar, 195K H TC 05 Blu Lim, Dayton, GDE HT, 255/75/18 , 210K , H TC 06 Bla Lim, GDE Eco, Destination AT 245/75/17, 151K, H TC 06 D Khaki Lim 126K wkII Eur TC 05 D khaki Lim 145k refurbishing All CRDS: Fumoto, Lift , Fan Shroud mod, fuel head Gen II, SAMCOS,self TB, 2 Mic filt, Hayden
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