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How to interpret the Regen Dots

T34ME

Active Member
Mar 31, 2016
2,262
3,528
Inland Empire
Overall, coasting (no regen or power) is most efficient. Why? Regen does not recover all momentum. Due to inefficiencies (in charging using regen and then in reusing that energy for driving the car) I speculate that you only see about 60%. So coasting, you get to use nearly 100% of the momentum to move the car. Regen is not a bad thing it's just not as good as coasting.
What you are postulating is that "low" setting is better than "standard" regen in terms of range and efficiency (but no regen is best of all)?
 

mswlogo

Well-Known Member
Aug 27, 2018
6,123
4,733
MA, NH
What you are postulating is that "low" setting is better than "standard" regen in terms of range and efficiency (but no regen is best of all)?

Thinking about it a bit, he’s right. Theory wise. And therefore you’re right too. It’s a good way to think about it. In practice though you often don’t have the room or time to always coast (or Low Regen) to stop. So regen is an alternative to coasting. The more regen (deceleration) you have the more situations you can use it instead of coasting (but you lose the inefficiency of going in and out of the battery with regen). There is a big difference between some regen and none (coasting). So a little regen can go a long ways.

Keep in mind even when you have full regen you can control how aggressive it applies regen. So why cap it, if it is available. Full regen just gives a wider range of using it in tighter situations, when you have to stop quicker (than the ultimate coasting to a stop).

Also in winter you have to factor in heating. The more time you spend “coasting” or Low Regening to a stop, takes longer to execute. You are also heating the cabin longer.
 
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