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Hybrid Vehicle (HV) Battery Pack and Auxiliary Battery
The Highlander hybrid contains a next generation high voltage, Hybrid
Vehicle (HV) battery pack and a low voltage auxiliary battery. The HV
battery pack contains non-spillable, sealed Nickel Metal Hydride
(NiMH) battery modules and the auxiliary battery is a typical
automotive lead-acid type.
HV Battery Pack
• The HV battery pack is enclosed in a metal case and is rigidly mounted to
the cabin area floor pan cross member under the second row rear seat.
The metal case is isolated from high voltage and concealed by a cover in
the cabin area.
• The HV battery pack consists of 30 low voltage (9.6-Volt) NiMH battery
modules connected in series to produce approximately 288-Volts. Each
NiMH battery module is non-spillable and sealed in a metal case.
• The electrolyte used in the NiMH battery module is an alkaline of
potassium and sodium hydroxide. The electrolyte is absorbed into the
battery cell plates and will form a gel that will not normally leak, even in
a collision.
• In the unlikely event the battery pack is overcharged, the modules vent
gases directly outside the vehicle through a vent hose.
HV Battery Pack
Battery pack voltage 288-Volts
Number of NiMH battery modules in the pack 30
NiMH battery module voltage 9.6-Volts
NiMH battery pack dimensions
25 x 43 x 7 in
(63 x 108 x 18 cm)
NiMH battery Pack weight
152.1 lbs
(69 kg)
Components Powered by the HV Battery Pack
• Front Electric Motor • Rear Electric Motor (with 4WD-i)
• Inverter/Converter • A/C Compressor
• Electric Generator • Power Cables
• Electric Power Steering
HV Battery Pack Recycling
• The HV battery pack is recyclable. Contact the nearest Toyota dealer or:
United States: (800) 331-4331 Canada: (888) TOYOTA-8 or 896-6828
Auxiliary Battery
• The Highlander hybrid also contains a lead-acid 12-Volt battery. The 12-
Volt auxiliary battery powers the vehicle electrical system similar to a
conventional vehicle. As with other conventional vehicles, the auxiliary
battery is grounded (negative pole) to the metal chassis of the vehicle.
• The auxiliary battery is located in engine compartment area.
288-Volt HV Battery Pack
12-Volt Auxiliary Battery in Engine
Compartment.
HV Battery Pack Mounted in Cabin Area
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