Control device for charger of battery of accumulators

The adjustable timing programmer (22) is connected to a push button (27) with contacts (28,29) which activate a relay (33). The relay operates a latching contact (35), a programmer contact (25) and charger contacts (36,37). After the push button is released the charger operates until the programmer time expires and any supply failure will require a fresh push button operation and programmer time resetting