B4
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14.
BATTERY
Before using the N-Com device for the first time, recharge the battery completely for at
least 10 hours. To obtain best performances from the battery, it is recommended to
completely recharge the battery the first few times. Afterwards, you can recharge the
battery for shorter periods. Whenever possible, it is best to recharge the battery
completely.
14.1.
Battery discharged signal
When turned on, the system signals when the battery is running down by switching to the
“Reserve” mode.
When the battery charging power falls below 1 hour of operation, the red LED begins to
flash (alternating with the blue LED) start to flash in order to indicate that the system is in
“Reserve” mode. Three consecutive beeps also signal the reserve mode.
When the battery operates in “Reserve”, the system automatically turns itself off in case
no button is pressed for 30 minutes. The shutting off is signalled by a series of beeps in
the helmet. This function makes it possible to always have a small reserve of energy to use
it again in case you forget to turn off your helmet.
14.2.
Recharging the system
To recharge the B4 system, connect the USB cable to a battery charger or to a powered
USB port. Charging occurs as follows:
B4 system turned off
When you connect the B4 system to the battery charger, the
blue LED begins to flash.
When the battery is fully charged, the blue LED stops
flashing and stays on.
B4 system turned on
When you connect the B4 system to the battery charger, the
red LED begins to flash.
When the battery is fully charged, the red LED turns off.
N.B.: If the device has not been charged for a long time (a few months), it may not be
possible to turn on the system during the first few minutes of the charging, as the voltage
may drop below the minimum limit.
