Automatic B-mode at 84% SOC

Jack66 · 08-14-2008, 07:39 PM

I thought I read somewhere that the Prius battery does not benefit from being at 100% SOC and tries to put it in the SOC sweet spot for long battery life.

TheForce · 08-14-2008, 08:21 PM

Here is the section of data relating to the b-mode. Its in xcel format if anyone wants to graph things out. B-mode is entered when SOC is greater than %80.

http://jaygroh.dreamhost.com/priusch...data/bmode.xls

tripp · 08-14-2008, 10:22 PM

Guys,
I've got a mountain commute and I've noticed that I rarely get full bars. I regularly get into the first green bar, but the last one rarely turns green. Don't have a CV so I don't know the precise SOC. I switch between B and D depending on the grade. There are a few pretty steep parts (8-10% grades) where I use B and for the rest it's pretty much D. OAT usually ranges from around 65 deg F to 90 deg F on this commute. Today I think it was in the 60's all the way down the canyon.

I have EV mode, but it seems to have malfunctioned because it hasn't worked in months (I've got the coastal tech mod). Any ideas?

The Tramp · 08-18-2008, 05:01 AM

Yesterday I came back home passing the Stelvio Pass: I managed to drain TOTALLY the battery: It will not go under 29% and only then the system would refuse to accelerate the car from a hairpin turn.

I got to the top that SOC was reading 32%, and temperature was 115 F.

Just for curiosity, mileage was reading 30.1 MPG at the top.

Coming down, when the battery reached 70% the temperature reached 130 F and the system was not accepting an input charge anymore.

08-14-2008, 07:39 PM	#31
Jack66 Kinda Jovial Member Join Date: Jan 2008 Location: Stafford, Virginia Posts: 768 My Car: 2008 Prius Package: #2 Nominated 6 Times in 2 Posts TOTM Awards: 0 Friends: 2	Re: Automatic B-mode at 84% SOC I thought I read somewhere that the Prius battery does not benefit from being at 100% SOC and tries to put it in the SOC sweet spot for long battery life.

08-14-2008, 08:21 PM	#32
TheForce I Plug-In My Prius Join Date: May 2005 Location: Wheelersburg, Ohio Posts: 2,136 My Car: 2006 Prius Package: #7 Nominated 7 Times in 2 Posts TOTM Awards: 0 Friends: 18	Re: Automatic B-mode at 84% SOC Here is the section of data relating to the b-mode. Its in xcel format if anyone wants to graph things out. B-mode is entered when SOC is greater than %80. http://jaygroh.dreamhost.com/priusch...data/bmode.xls

08-14-2008, 10:22 PM	#33
tripp Which it's a 'ybrid, ain't it? Join Date: Oct 2005 Location: Denver, CO Posts: 3,773 My Car: 2005 Prius Package: #3 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 4	Re: Automatic B-mode at 84% SOC Guys, I've got a mountain commute and I've noticed that I rarely get full bars. I regularly get into the first green bar, but the last one rarely turns green. Don't have a CV so I don't know the precise SOC. I switch between B and D depending on the grade. There are a few pretty steep parts (8-10% grades) where I use B and for the rest it's pretty much D. OAT usually ranges from around 65 deg F to 90 deg F on this commute. Today I think it was in the 60's all the way down the canyon. I have EV mode, but it seems to have malfunctioned because it hasn't worked in months (I've got the coastal tech mod). Any ideas? __________________ Cheers, Tripp 2005 Silver Pkg 3, OEM Block Heater, Coastal Tech EV mod, BT Tech Chassis Stiffener, hell damned infernal reverse beep disabled Boulder Real Estate Howay the Toon! "Sometimes when you aim for the stars, you hit the moon." -- Ian Holloway

08-18-2008, 05:01 AM	#34
The Tramp Italian Prius Expert Join Date: Jan 2006 Location: Turin, Italy Posts: 246 My Car: 2005 Prius Package: T Spirit Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 3	Re: Automatic B-mode at 84% SOC Yesterday I came back home passing the Stelvio Pass: I managed to drain TOTALLY the battery: It will not go under 29% and only then the system would refuse to accelerate the car from a hairpin turn. I got to the top that SOC was reading 32%, and temperature was 115 F. Just for curiosity, mileage was reading 30.1 MPG at the top. Coming down, when the battery reached 70% the temperature reached 130 F and the system was not accepting an input charge anymore.

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