Minelab F Series Operation Manual page 15

F Series Battery Charger Operations Manual
c. Once the batteries have been fully discharged, the Charger will
automatically enter the charging mode, as indicated by the constantly
illuminated "Charging" LED.
d. Charging will proceed as normal, until fully charged.
batteries have been fully charged (approximately three hours) the
green "Ready" LED will illuminate and the "Charging" LED will switch
off. This indicates that the batteries are ready for use. (Until the
batteries are removed, and while power remains connected to the
Charger, the batteries will receive a trickle charge, which will keep
them fully charged.)
e. The "Discharge" button can be pushed again if another discharge-
before-charge cycle is required. This process can be repeated as
many times as required, but is normally required only once.
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Once the