Battery charger

  • US 4,385,269 A
  • Filed: 01/09/1981
  • Issued: 05/24/1983
  • Est. Priority Date: 01/09/1981
  • Status: Expired due to Fees
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First Claim
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1. A battery charger comprising means for supplying a cyclic sequence of charging pulses of charging current of a predetermined charging pulse period of the order of several seconds to a battery interspersed with discharge pulses of a predetermined discharge pulse period of the order of greater than a second for discharging the battery during the charging pulse interpulse period, means for measuring the change in the battery terminal voltage over a further predetermined period during one of said pulse periods, and means for processing said change of battery voltage to derive a condition for terminating the pulse charging of the battery in response to the measured voltage change.

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