2010 Prius II HV Battery Reconditioning

The bulb discharger takes a looong time to complete. I hope you'll be down to 134w by the time you go to bed tonight.
You will also need a set of 25w bulbs for the lower voltages, you won't be able to go down under 134v with the 40w bulbs. I normally switch to 25w bulbs when I get to 180w.

 

Just follow the chart Jeff provides on his website. It's slow, but safe.

 

I got it down to 86v today and am now in the charging process. It’s reading 221v as I type now. Each block voltage is around 15.6/15.7. Is it safe to leave plugged in overnight? It’s 37 degrees F here in Pittsburgh, so no heat worries. The fan is also running.

 

Sounds like you have it nailed! If you check through past threads you'll learn why I eventually went with the IntelligentDischarger - the bulbs, although they work just as well, are a bit of a PIA to deal with (particularly the hot 200Watters at the beginning - although the heat problem can be alleviated by the use of the MajikExtenshunKord) - cool temps during charging are good for the TractionBattery! Tip: Long charges are good, I've found that some of the charges I've done can take up to ~30 hours!

 

My car is 2010 Prius III, using Prolong grid charger. How do I know the balancing process has completed ? Thanks

 

Thank for quick replying,
My Prius is about 240K miles.
It is just preventive.
I am in SoCal.

After 15 hrs The Prolong's meter shows 236v and 332A. Is it good ?
Thank again.

 

Thank for correcting me.
It's 332mA.
This is first top and balance. I do not plan to do the recondition that take too much time and the battery is still healthy.
It's at 236v for couple hours.

 

What @Raytheeagle said.

I also agree that, since it seems healthy, topping it off is sufficient. Instructions say to let it sit at least a half hour before starting the car. I'd wait at least an hour. I've also thought about maybe next time hooking up the discharger for a few minutes and then letting it cool for a while after pulling the charge down a little.

 

This is update message:
I did 4 times of charging to my battery in 5 weeks. And seeing : the more I charge the battery the smoother acceleration I have. Therefore I am wondering: how often can I charge HV battery ?