Supply a constant current to the batteries being charged until a voltage rise per unit time threshold (dv/dt) is met.ġ8. Supply a constant voltage to the batteries being charged until current being drawn by the batteries reaches a threshold current value and Supply a constant current to the batteries being charged until the battery voltage reaches a first threshold voltage value A battery charger according to claim 16 wherein when the battery voltage decreases to a second threshold voltage value said microprocessor further configured to: A battery charger according to claim 13 wherein said microprocessor further configured to continuously monitor battery voltage.ġ7. A battery charger according to claim 14 wherein said voltage rise per unit time threshold (dv/dt) is less than 0.1 volts per cell per hour.ġ6. A battery charger according to claim 13 wherein said microprocessor further configured to supply a constant current charge to the batteries being charged until a voltage rise per unit time threshold (dv/dt) is met.ġ5. Voltage and current measurement circuits for monitoring battery parameters Ī memory, said memory to be either internal or external to said microprocessor, said microprocessor configured to apply a constant current charge to the batteries being charged until the battery voltage reaches a first threshold voltage value and supply a constant voltage to the batteries being charged until current being drawn by the batteries reaches a threshold current value.ġ4. A solid state battery charger comprising:Īn output circuit for supplying current and voltage to a battery to be charged A method according to claim 1 further comprising the step of supplying a signal that indicates an over temperature condition in the battery charger.ġ3. A method according to claim 1 further comprising the step of supplying a signal that indicates an 80% battery charge level during a charge cycle.ġ2. A method according to claim 1 further comprising the step of supplying a signal that indicates a charge cycle is complete.ġ1.
A method according to claim 1 further comprising the step of supplying a signal that indicates the charger is in a charge cycle.ġ0. A method according to claim 1 further comprising the step of limiting a charge cycle to a predetermined time.ĩ. A method according to claim 1 further comprising the step of storing a running total of a number of times each battery has dropped below a predetermined voltage value.Ĩ. A method according to claim 1 further comprising the step of storing a running total of ampere-hours supplied by the battery charger.ħ. A method according to claim 1 further comprising the step of inhibiting use of a device powered by the batteries during a charge cycle.Ħ.
Supplying a constant current to the batteries being charged until a voltage rise per unit time threshold (dv/dt) is met.ĥ. Supplying a constant voltage to the batteries being charged until current being drawn by the batteries reaches a threshold current value and Supplying a constant current to the batteries being charged until the battery voltage reaches a first threshold voltage value A method according to claim 3 wherein when the battery voltage decreases to a second threshold voltage value said method further comprises the steps of: A method according to claim 1 further comprising the step of continuously monitoring battery voltage.Ĥ. A method according to claim 1 further comprising the step of supplying a constant current to the batteries being charged until a voltage rise per unit time threshold (dv/dt) is met.ģ. Supplying a constant voltage to the batteries being charged until current being drawn by the batteries reaches a threshold current value.Ģ. Supplying a constant current to the batteries being charged until the battery voltage reaches a first threshold voltage value and A method for charging batteries using a solid state battery charger, said method comprising the steps of:
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