BATTERY RESEARCH

Lead Acid vs. Nickel Metal Hydride

Current Battery in Vehicle Discover Clean & Green series Absorbed Glass Mat (AGM) Valve

Regulated Lead Acid (VRLA) Low self discharge rates (Approx. 1%-3%

per month at 20 °C–25°C / 68°F–77°F) Battery packs total 144V Weighs 89.5 lbs each Weighs 1074 lbs total

Minutes of Battery Discharge

Performance Averages after 25 cycles

Constant Current Discharge Ratings in Amperes at 20°C (68°F) End Point Value: Voltage of the battery at the

end of discharge period The current discharge rating decreases as the

length of time of the current discharge & the end point voltage increases

Constant Power Discharge Ratings in Watts at 20°C (68°F) The power discharge rating decreases as

the length of time of the power discharge & he end point value increases

Depth of Discharge Ratings

As depth of battery discharge increases, total numbers of times battery will successfully charge decreases

Toyota Prius Battery Nickel-Metal Hydride battery pack Ni-MH are known for having high specific

power, a high energy density, a long cycle life, and for being a low maintenance choice

Environmentally friendly Total weight of battery pack is 118 lbs

compared to 1074 lbs in our 144V system Power output of 36 hp (27kW) Provides 201.6 Volts (Gen III & IV) Panasonic Metal Case Prismatic

Since 2004 model

Toyota Prius Battery Feb 2011 - Prius has available in US for 10 years Consumer Reports did testing to determine lifetime of

battery and cost to replace it 2002 Toyota Prius with over 200,000 miles on it compared to

the nearly identical 2001 Prius with 2,000 miles tested by Consumer Reports 10 years before

Results: Little difference in performance when tested for fuel economy and

acceleration Overall fuel economy of the 2001 model was 40.6 miles per gallon,

while the 2002 Prius with high mileage delivered 40.4 miles per gallon

Effectiveness of the battery has not degraded over the long run. The cost of replacing the battery varies between $2,200 and $2,600 from a Toyota dealer, but low-use units from salvage yards are available for around US$500

Toyota Prius Battery Battery Details

Toyota Prius Battery Very little was changed for 2010 model Slightly redesigned Designed to last vehicleLife or up to 180,000 miles The shortest life cycle occurs when the battery pack is stored at high temperatures for long periods of time