© Interleader Limited 2017
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Printed: 06/09/2017
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Battery Capacity ‘Traffic Light’ LED indicators
All the time that the unit is switched on the on-board microprocessor monitors the
battery voltage to ensure that operation remains within the safe working limits of the
battery and to ensure its maximum life.
In all modes,
except ‘stealth mode’, when the unit is turned on the battery
voltage/
capacity is indicated via the three ‘traffic light’ LEDs (Figure 8).
Their status may be interpreted as follows:
LED Status
Battery Voltage
Meaning
Red flash every 10s
<6.00V
Battery exhausted
– Switch off & Recharge
Flashing Red every 1s
6.00V - 6.25V
Battery nearing exhaustion. Switch off & Recharge
Solid Red
6.25V
– 6.80V
Battery low (<20% remaining).
Solid Orange
6.80V
– 7.50V
Battery OK (between 20% and 80% capacity)
Solid Green
>7.50V
Battery Full (>80% capacity)
In practice the green LED will not remain lit for much of the total running time. Most of the running time
is spent with the orange LED on. This is normal and to be expected.
Also note that at the transition point between, for example, orange and red, the LEDs may display
alternate orange/red at a rate of 1 second per colour. This is normal.
If the MLC has been run continuously until the battery is nearly exhausted and then turned off, the
battery
voltage may ‘recover’ a little. If turned back on this may show as either the red or orange light
coming on briefly but the unit quickly indicating a low battery and shutting down.
Stealth Mode
When the unit is first switched on in Stealth Mode, the Battery Capacity LEDs will light for 5 seconds to
indicate the battery capacity. After this initial period, the Battery Capacity LEDs will turn off.
Figure 8
