5 ms·
Lithium batteries in cars are usually at least that good already. Most of the efficiency lost is in converting back and forth between AC/DC between the grid and
by zdragnar 3mo ago
Lithium batteries in cars are usually at least that good already. Most of the efficiency lost is in converting back and forth between AC/DC between the grid and the motors, and the rest in the auxillary features such as heating and cooling the cabin.
- m463 3mo agosorry, probably should have quoted the entire thing: > The batteries are showing a round-trip efficiency of 96 percent, a significant 2 to 3 percent better than LFP. (“Round trip” refers to the amount of energy a battery discharges, relative to the amount used to charge it). I think for cars, the efficiency probably doesn't matter that much. If it costs $1.03 per kwh instead of $1.00 per kwh, or 103 miles vs 100 miles, no car owner will care. But grid storage is all about efficiency.
- Dylan16807 3mo ago> But grid storage is all about efficiency. Is it? Isn't there usually a very large price ratio between when grid batteries are charged and discharged? Like charging at 5 cents and discharging at 25? In that situation a couple percent of inefficiency is nothing special, just a small cost.