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Battery power system for a vehicle

  • US 5,767,658 A
  • Filed: 11/18/1996
  • Issued: 06/16/1998
  • Est. Priority Date: 11/18/1996
  • Status: Expired due to Fees
First Claim
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1. A battery power system for a vehicle having an internal combustion engine with an alternator, an engine starting system, and electrical devices which are operable when the engine is off, the battery power system comprising:

  • a battery pack having at least one high cold-cranking-ampere (CCA) battery having a first voltage coupled to the engine starting system and at least two deep-cycle batteries each having a second voltage different from the first voltage and connected in series to provide an output at the first voltage for powering the electrical devices when the internal combustion engine is off, said at least one high-CCA battery having a first voltage and providing sufficient cold cranking current for starting the internal combustion engine of the vehicle; and

    a switch coupled to said serially connected deep-cycle batteries and said at least one high-CCA battery, said switch being operable to connect said deep-cycle batteries and said at least one high-CCA battery in parallel for charging by the alternator when the internal combustion engine is operating and to isolate said deep-cycle batteries from said at least one high-CCA battery when the internal combustion engine is not operating.

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