3
Battery Charge Level
To show the battery level press and hold in the button on the front panel until the yellow
battery light shows along with a number of red lights. The number of red lights indicates the
battery charge:
• 4 red lights = fully charged
• 3 red lights = good level of charge
• 2 red lights = medium level of charge
• 1 red light = low charge
• Yellow light flashing = discharged
After a couple of seconds of indicating the battery level all the lights will go out.
NOTE: If the battery is left in a discharged state then the unit will go into hibernation mode
and the programs will not run. When the button is pressed, depending on the level of the
battery depletion, the battery light may flash a few times or not light at all. The user
programs will not start. It is necessary to recharge the unit to make it active again.
Charging the Battery
The rechargeable battery built into the unit is charged
by inserting a micro USB lead into the socket in the
side of the unit and connecting the other end into a
USB charger or USB port on a computer. To open
the USB port dust cover, insert a small screwdriver
(or finger nail) into the grove as shown and gently
lever it open. If there is any moisture in the USB port
then shake out or use an absorbent tissue. When
charging, the yellow battery light on the front panel is
illuminated and will stay illuminated for as long as the
charger is attached.
To check the battery level during charging it is best to
disconnect the charging lead, wait a few moments and then hold in the button on the front
panel until the battery light shows. A fully charged battery (four red lights) will give at least
10 hours of active program use. It is recommended to charge the unit until it is fully
charged.
The time required to charge the battery will depend on how discharged the battery is. If the
battery level is at two red lights then a full charge will take around 7 hours. If the battery is
fully discharged (flashing battery light) then a soak charge of 20 hours is recommended.
If the unit is going to remain unused for several months then it is recommended to fully
charge the unit and give it a recharge every six months to preserve the battery. If the
battery is left fully discharged for an extended time it may start to deteriorate.