rotarypower101
Member
The inference being the difference between the 4s ~12V-16.8V Li Ion VS a 4S ~8V-14.4V LFP, the latter, I think, being in the happy voltage range without stepping the voltage common 12Vdc components typically expect and wouldn't cause conflicts.The lithium LV battery has much less capacity than the older lead acid 12V battery. Without PCS power it drains twice as fast (<10 minutes in my experience) as the car pulls ~20A when powered on.
When airbags and pyrofuse blow, the vcfront will cut off power the half of the car in order to give occupants more time to exit the car and grab their belongings before the LV battery drains to zero.
It might be that even with buck losses it makes more sense to go that way with a stable linear output VS what seems logical, no voltage stepping losses or equipment with far more cycle life out of the LFP for the LV system?
Would like to better understand what the driving factors where that influenced that decision.
Deep cycling a lead acid like that was always a recipe for poor life/performance from my understanding.
Its possible I'm misunderstanding the whole point also...