chrylser loves the temp compensated charging concept..... i've seen it on no other vehicles though. the earlier models have a temp sensor inside the ECM itself, later seems to have moved it closer to the battery.
but, yes, high temps will reduce battery life. cold temps are temporary reductions in capacity/output/input. you'll see this in some vehicles that moved the battery into the passenger cabin that in otherwise similar vehicles, the underhood battery might last 5 years, while one hidden underneath the rear seat lasts 10. YMMV though.
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