We all know freezing cold is supposed to reduce the power output of batteries. Regardless if this is true or not don't forget the power required to turn-over an engine who's ice cold oil resembles 90W.
What I'm after is "heat soak" where you try starting an engine, everything under the hood is around 180F and the starter strains to crank the motor. First does the performance of lead-acid batteries fall with increased heat?..............
Always gets me when I watch a FE dyno-run and see a motor go from 7,000 full power to shut off in a few seconds. Can you say heat sink?..... Having had my share of turbo motors I'm acutely aware of this..... To me that's how to synthesize heat-soak in the engine.
How about the starter itself tucked in near headers/manifolds I could see the starters temp from radiant heat off exhaust surpassing 200-300F. Then you crank it and it gets even hotter. Are the magnetic fields originating from coils in a conventional starter reduced by this heat?.............
When it comes to mini starters I understand permanent magnets can permanently have their fields reduced by heating.... But what happens to mini starters when they to see 200F+
