Ransomes part 164 605
36v
Pat 3.794.905

I believe maybe for lester / ezgo golf vehicles

I have looked up this pat number and found the following blurb......

Abstract.... to periodically initiate a charging run during storage of the battery charger and battery for long periods of time, ten hertz clock pulses are applied to a first counter normally used to measure the potential of the battery and the output from the first counter is applied to a second counter normally used to measure the rate of change of the potential of the battery until a predetermined count is reached in approximately 2 1/2 days, with the output from the second counter being used to initiate a charging cycle. To avoid relay contact chatter when the battery is disconnected from the battery charger, the rectified alternating current from the battery charger is applied to a circuit that generates a positive pulse which deenergizes the battery charger when the battery is disconnected from the battery charger.