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Michael R Berger (not verified)    March 25, 2025 - 2:07PM

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ICE vehicles are periodic very high draw with very challenging heat environment. It gets pretty hot under the hood.

EV's 12v battery use pattern is very different. Lower draw over longer times. Turns out both are really hard on lead acid batteries, but in different ways. Programming to top off the lead acid battery from the traction battery is critical to 12v battery longevity.

My model 3, when it came out, had very short 12v battery lifespans. This was largely fixed with software update after all too many 12v's died a premature death.

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