(US5742150-A)      The power supply comprises batteries connected in a series circuit and a shunt circuit for shunting the current in response to a battery being charged to a preselected upper charge limit. A sump battery is connected in series with the batteries series circuit and a load is connected across the sump battery.    Once the individual battery potential is detected as having reached its charge limit, a shunt current is generated about that battery of a magnitude approximately equal to the current in the string. This causes the current through the individual battery to drop to zero, removing the battery from the string without actually switching it out.    USE -   Power supply is for battery powered vehicles and prevents individual batteries from becoming overcharged during charging or from becoming excessively depleted during discharge.    ADVANTAGE -   Supply monitors the individual batteries in a battery string and prevents each from overcharging or discharging below a minimum potential.    (EP947028-A1)      The power supply comprises batteries connected in a series circuit and a shunt circuit for shunting the current in response to a battery being charged to a preselected upper charge limit. A sump battery is connected in series with the batteries series circuit and a load is connected across the sump battery.    Once the individual battery potential is detected as having reached its charge limit, a shunt current is generated about that battery of a magnitude approximately equal to the current in the string. This causes the current through the individual battery to drop to zero, removing the battery from the string without actually switching it out.    USE -   Power supply is for battery powered vehicles and prevents individual batteries from becoming overcharged during charging or from becoming excessively depleted during discharge.    ADVANTAGE -   Supply monitors the individual batteries in a battery string and prevents each from overcharging or discharging below a minimum potential.    (CN1230295-A)      The power supply comprises batteries connected in a series circuit and a shunt circuit for shunting the current in response to a battery being charged to a preselected upper charge limit. A sump battery is connected in series with the batteries series circuit and a load is connected across the sump battery.    Once the individual battery potential is detected as having reached its charge limit, a shunt current is generated about that battery of a magnitude approximately equal to the current in the string. This causes the current through the individual battery to drop to zero, removing the battery from the string without actually switching it out.    USE -   Power supply is for battery powered vehicles and prevents individual batteries from becoming overcharged during charging or from becoming excessively depleted during discharge.    ADVANTAGE -   Supply monitors the individual batteries in a battery string and prevents each from overcharging or discharging below a minimum potential.    (JP2001503188-W)      The power supply comprises batteries connected in a series circuit and a shunt circuit for shunting the current in response to a battery being charged to a preselected upper charge limit. A sump battery is connected in series with the batteries series circuit and a load is connected across the sump battery.    Once the individual battery potential is detected as having reached its charge limit, a shunt current is generated about that battery of a magnitude approximately equal to the current in the string. This causes the current through the individual battery to drop to zero, removing the battery from the string without actually switching it out.    USE -   Power supply is for battery powered vehicles and prevents individual batteries from becoming overcharged during charging or from becoming excessively depleted during discharge.    ADVANTAGE -   Supply monitors the individual batteries in a battery string and prevents each from overcharging or discharging below a minimum potential.