2007 Prius with EV Mod sluggish performance

i think that's how it's supposed to work. why don't you just shut it off prior to needing accelleration?

 

did it come with directions? iirc, mine shut off if the battery was too low, if the ice dropped below temp, or if the accellerator was pressed hard enough to require more power than the battery could provide. maybe a quick stomp on the accellerator to fire the ice and release, then feather to keep rpm's down?

 

Dont be too hard on it in EV mode! Dont expect it to give you Tesla performance either. The Prius battery is small and not designed to propel you like a full blown EV. If thats what you are looking for, buy a PIP.

 

I agree to take it easy in EV. From what I gather, in order to maximize the service life of the traction pack, you want to minimize the number of charge/discharge cycles. I would imagine that placing high demand on the HV pack, especially when cold, may be doing it some damage.

I believe your HV pack will be happier if you don't use EV mode and just let the ICE start as you're climbing the driveway (or before).

The electric drive power output is high in torque but low in horsepower. It doesn't do very well propelling the car on its own, as evidenced by trying to back uphill in reverse (electric-drive only).

 

The reason is because the car wants to keep your battery at a specific state of charge. After you climbed your driveway in electric only, you used a significant amount of the battery (especially in the cold), and once you get on the road, the [gas]engine has to not only power the car, but recharge the traction battery as well. You'll notice a lack of power, and increased engine rpm's until the battery gets back to normal level.

 

The OEM version of the EV control allows you to select EV by pushing the EV button before the Engine has started.
If you push the button again it cancels EV and the engine starts immediately. So pushing the EV button after leaving your drive should put your car into normal mode.
Pushing the accelerator to hard also drops the car out of EV. The European EV cancels at 31 mph "indicated" this is about 28 mph actual.

John (Britprius)

 

FYI, Australian spec G2 drops out of EV mode at 46kmh. though under very light load conditions it will do 67kmh without turning over the ICE.

Jason.