Prius Battery Information

**efusco** · 09-01-2004, 03:28 PM

This is an interesting press information article about the Prius' hybrid battery. How and why it was chosen, a little techy stuff, and some info about Li+ ion and supercaps.

I found the last paragraph about how capacitors are currently used in the emergency braking system in the Prius particularly interesting.

eak354 · 09-06-2004, 07:41 AM

good reading! thanks!

Frank Hudon · 09-06-2004, 11:44 AM

Evan the capacitor unit was one of the things damaged on the wife's 2k4 in the accident and at the time it was $1700USD. If you want to see it just take out the black lower storage box in the lower hatch and have a look at the black box just to the left of the aux. battery. There are 27 capacitors in there that provide the brake pump with power in the case of the 12Volt battery going open circuit and not being able to power the pump which charges the accumulator with pressure to provide the friction brake to stop the car.

Ray Moore · 09-06-2004, 10:17 PM

This car just keeps on surprising me. I continue to find myself humbled as an American looking at Japanese mainstream technology that our American auto makers can't even approach. Thanks Evan.

**efusco** · 09-06-2004, 10:31 PM

There are people out there that take offense when I refer to this car as the most technologically advanced on the road. I think those people don't understand the complexity and refinements at so many levels in the Prius. Glad folks finally found this article of interest as I thought it was good reading.

09-01-2004, 03:28 PM	#1
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 17,255 My Car: 2004 Prius Model: Package: #9 Thanks: 50 Thanked 262 Times in 157 Posts Friends: 37	Prius Battery Information This is an interesting press information article about the Prius' hybrid battery. How and why it was chosen, a little techy stuff, and some info about Li+ ion and supercaps. I found the last paragraph about how capacitors are currently used in the emergency braking system in the Prius particularly interesting.

09-06-2004, 11:44 AM	#3
Frank Hudon Senior Member Join Date: Jan 2004 Posts: 4,144 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Evan the capacitor unit was one of the things damaged on the wife's 2k4 in the accident and at the time it was $1700USD. If you want to see it just take out the black lower storage box in the lower hatch and have a look at the black box just to the left of the aux. battery. There are 27 capacitors in there that provide the brake pump with power in the case of the 12Volt battery going open circuit and not being able to power the pump which charges the accumulator with pressure to provide the friction brake to stop the car. __________________ You can quote me on this, People who drive vehicles that idle at a traffic light, are idiots. mine 2k3 avg. 5.36 for 46,915Km Best tank 4.4L per 100K 64.2 Imperial 53.4 U.S. gallon, MiniScanner, SilverStars, block heater, winter lips, in as of Oct 15, out on April 25. In again on Sept. 21st. her's 2k4 "B" avg. 6.01 for 42,317 Km Best tank 4.02L per 100K, CAN-view with OBD11 module and flashloader, SilverStars, 06 Chrome grill bar, Michelin HydroEdge, upper and lower grill blocker,upper out as of April 7, lower out on April 28. In again on Sept 21st.

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09-06-2004, 07:41 AM	#2
eak354 Senior Member Join Date: Dec 2003 Posts: 433 My Car: 2004 Prius Model: Package: #9 Thanks: 2 Thanked 0 Times in 0 Posts Friends: 0	good reading! thanks!

09-06-2004, 10:17 PM	#4
Ray Moore Senior Member Join Date: Mar 2004 Location: Texas Hill Country Posts: 820 My Car: 2004 Prius Model: Package: #9 Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	This car just keeps on surprising me. I continue to find myself humbled as an American looking at Japanese mainstream technology that our American auto makers can't even approach. Thanks Evan.

09-06-2004, 10:31 PM	#5
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 17,255 My Car: 2004 Prius Model: Package: #9 Thanks: 50 Thanked 262 Times in 157 Posts Friends: 37	There are people out there that take offense when I refer to this car as the most technologically advanced on the road. I think those people don't understand the complexity and refinements at so many levels in the Prius. Glad folks finally found this article of interest as I thought it was good reading.