Actilino
Battery Management
Page 95
10
Battery Management
Your Actilino features a lithium ion battery with a charge of 2.800 mAh. The Actilino will
operate for about 30 hours with a new, fully charged battery. This maximum run time
decreases as the battery gets older. The battery survives up to 1000 charging and
discharging cycles until its capacity weakens noticeably. Whether a lithium ion battery
survives for just one or even five years depends on its use and the operating temperature.
The operating temperature should not exceed 40°C / 104°F, if possible.
Batteries are subject to aging which can be aggravated under adverse conditions. This is
the case when seemingly fully charged batteries operate for only a short time period before
they need to be recharged. You can do a few things to reduce this effect:
•
If you store the battery for a longer time, its charge should be 40-80%. Lithium ion
batteries should be recharged every 3 to 4 months to avoid a deep discharge.
•
Slow charging means smooth charging and extends the lifespan of the battery.
Because of this, the charge current is limited to 1A.
•
Lithium ion batteries should, if possible, not be discharged completely as this can
reduce the capacity in case of recurrence. It is not good for the capacity to charge
the battery from 0% to 100%. However, complete discharging and charging is
required during the calibration of the charging electronic, which leads to a correct
capacity status display.
•
Lithium ion batteries do not need any conditioning; therefore, it is not necessary to
completely charge and then discharge batteries of new devices for several times on
first use.
10.1 Battery Charging
The Actilino contains intelligent recharging circuitry for charging the battery. Recharging
starts automatically when the power supply delivered with your Actilino is connected to a
wall outlet or if the Actilino is connected via USB to a computer that is switched on.
Recharging via a power outlet takes approximately 6 to 8 hours if the battery was empty.
When connected to a computer it takes about twice this time. The Actilino features an
electronic recognition and interpretation of the end of a load cycle, as well as of the
permissible discharge. Therefore, the batteries can neither be overcharged nor excessively
discharged. The power supply may therefore remain connected for longer periods of time.
10.2 Battery Capacity Display
The device monitors the battery status in every operating mode. It is therefore possible to
display the current battery status at any time. There are two options for displaying battery
status: battery voltage and available remaining battery capacity.
Battery voltage is an indirect measure of battery status. The end of discharge has been
defined as 3 V. The device turns itself off at a battery voltage of 3 V and can only be turned
on again when it has been connected to the power supply or an USB port for recharging.
With fully charged batteries, the voltage may reach 4.2 V.
