Jay Summet via EV wrote:
Note that using a battery (both charging and discharging) will heat the battery because of the waste heat loss inherent in the inefficiencies of the charging/discharging process.
That's true. But the efficiency of good EV cells is high (95% or more) that very little waste heat is generated. And, the pack is so heavy that this heat does not change the pack temperature very much. It's likely to be 10 deg.F or less.
Charge efficiency is worst when the pack is nearly full. The older lead-acid or nickel-based chemistries could generate more heat because they were routinely overcharged for balancing. But that's a bad idea with lithium chemistries -- overcharging is avoided because it dramatically shortens life!
QuickCharging / Supercharging will heat up the battery faster/more than a regular L2 charger or trickle charger.
Yes. The faster the charge, the less efficient it is and the more waste heat will be generated.
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