Based on a 555, this 80's American documentation circuit detects the voltage of a battery and can then disconnect the charger. The transistor may be a general purpose type.
The output transistor used in this amplifier must have Vce of at least 200 V and Ic of 1 A and...
This circuit is suggested by the Linear Applications Handbook of National Semiconductor, being used...
The circuit shown in the figure was found in the Linear Applications Handbook by National...