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Battery charging apparatus

  • US 4,139,812 A
  • Filed: 07/19/1977
  • Issued: 02/13/1979
  • Est. Priority Date: 07/23/1976
  • Status: Expired due to Term
First Claim
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1. Battery charging apparatus comprising a rechargeable battery having a plurality of sections, input terminal means to which a source of charging current can be connected, output terminal means and switch means normally connecting said battery sections in series across said output terminals controlled by a relay connected across said input terminals and operative when energized by application of a pre-determined voltage to said input terminals to disconnect said battery from said output terminals, connect said battery sections in parallel across said input terminals and connect said input and output terminals.

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