High temperatures certainly shorten battery life. Even more so for ICEs where they usually put the battery under the hood next to the hot engine.
It depends on the vehicle, but I have noticed that some vehicle's electrical systems have pretty poor charging algorithms. Worst case, it just "floats" the battery at around 14v (too high for a proper float voltage). Or some blindly charge to 15v right after starting, then after a fixed time drop it to 13.8v (my pickup does this). Most have no temperature compensation, so they overcharge when hot and undercharge when cold. When I worked for Cruising Equipment, they sold a replacement regulator (for alternators that supported it) that had battery current, voltage, and temperature sensors to follow a proper charging algorithm. It typically doubled battery life. -- Excellence does not require perfection. -- Henry James But it *does* require attention to detail! -- Lee Hart -- Lee A. Hart https://www.sunrise-ev.com _______________________________________________ Address messages to [email protected] No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
