Juniper Systems JS600 - Manual (Page 101)

Appendix Page A-5
Green and Red LEDs
There is a red and a green LED (light emitting diode) on the face of the connector. When
you plug the power adaptor into the wall socket and attach the SafeCharger to the
FieldBook, both LEDs turn on.
Green LED
The green LED is the charge indicator. When it is on, everything is connected correctly and
the FieldBook is being charged. If the green LED does not come on, it is not charging. Make
sure the battery is installed, the charger is connected to FieldBook, and the AC outlet you
plugged the power adaptor into is energized.
Red LED
The red LED is the overnight rate indicator. When it is on, the charger is in the overnight
charge rate. The FieldBook is given a full charge over 12 hours. The charger then automati-
cally switches to trickle charge mode and the red LED turns off. You can leave the
FieldBook in trickle charge mode continuously without damaging the batteries, allowing
you to keep it charged over the weekend and during inactive periods.
Manually Switching to Trickle Charge Mode
You can manually switch the SafeCharger to trickle charge mode by gently inserting a
pointed object into the trickle charge set button found between the LEDs. The green LED
stays on and the red LED turns off, indicating that the charger is in trickle charge mode.
❖ Note: If there is a power failure which lasts for more than a few seconds, the SafeCharger will
switch back to overnight charge mode for 12 hours then return to trickle charge mode.