Power of regen

[johu]

Just wanted to share with you my amazement about the effectiveness of regen. We did a 65km trip yesterday in Kassels hilly terrain. You can see 10.6 kWh were uses in total but also 1.8kWh were put back into the battery by regen (the counter resets after a complete charge). Thats 17% of energy saved over a non-regenning vehicle. In city traffic this can reach up to 25%.

[arber333]

I have tried regen with my wifes Ampera on a prolonged highway hill and from 25km i got to 80km range! The hill was some 15km in range with enough incline to drive at 100km/h in regen. In the final stretch car simply refused to store more energy.

I also noticed difference with battery chemistry. On a specific hill i tested regen some years back and with LiFe batteries i gor some 15A into battery.
Now on the same hill i can get 25A into Kokam LiPo cells!!! I admit i use somewhat higher system voltage now but that is even better. I guess internal resistance plays a big part here....

[tom91]

You can also use the regen as a way of locking the rear axle and using it for drifting.

The Zero-EV skyline runs an 'regen handbrake'.

Just a quick question, for the setting of the off throttle regen does this generate a curves like:

No throttle is the off throttle regen
Max throttle is the max throttle setting

and then a straight line between for all other throttle positions, thus you can do the 'one pedal driving'.
Or a bit of throttle is less regen and no throttle yet.