Lexus GS450h - Hybrid Vehicle (HV) Battery Pack and Auxiliary Battery; HV Battery Pack; Components Powered by the HV Battery Pack

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Hybrid Vehicle (HV) Battery Pack and Auxiliary Battery
The GS450h features a high voltage Hybrid Vehicle (HV) battery pack that contains
sealed Nickel Metal Hydride (NiMH) battery modules.
HV Battery Pack
• The HV battery pack is enclosed in a metal case and is rigidly mounted to the trunk area
behind the rear seat. The metal case is isolated from high voltage and concealed by fabric
covers in the trunk.
• The HV battery pack consists of 40 low voltage (7.2 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 mixture of potassium and
sodium hydroxide. The electrolyte is absorbed into the battery cell plates and will not
normally leak, even in a collision.
HV Battery Pack
Battery pack voltage
288 V
Number of NiMH battery modules in the pack
40
NiMH battery module voltage
7.2 V
NiMH battery module dimensions
10.9 x 0.8 x 4.2 in
(276 x 20 x 106 mm)
NiMH module weight
2.3 lbs (1.0 kg)
NiMH battery pack dimensions
37 x 14.5 x 15.3 in
( 940 x 370 x 390 mm)
NiMH battery pack weight
140 lbs ( 63 kg)
Components Powered by the HV Battery Pack
• Electric Motor • Inverter/Converter
• Power Cables
• Electric Generator
• A/C Compressor
• DC-DC Converter for EPS
• DC-DC Converter for 12 Volt Auxiliary Battery