Sonim XP3 User Manual page 11

Battery Performance
A rechargeable battery powers your device.Use the battery
only for its intended purpose. Never use any charger
or battery that is damaged. If the battery is completely
discharged, it may take a few minutes before the charging
indicator appears on the display or before any calls can be
made. The full performance of a new battery is achieved
only after two or three complete charge and discharge
cycles. The battery can be charged and discharged
hundreds of times but it will eventually wear out. Unplug
the charger from the electrical plug and the device when
not in use. Ensure that you do not leave the fully charged
battery connected to a charger. If left unused, a fully
charged battery will lose its charge over time.
Battery Replacement
When the talk and standby times are noticeably shorter
than normal, replace the battery with an original Sonim
battery.If a replacement battery is being used for the first
time or if the battery has not been used for a prolonged
period, it may be necessary to connect the charger and
then disconnect and reconnect it to begin charging the
battery.
Avoid Short Circuit
Do not short-circuit the battery. An accidental short-circuit
can occur when a metallic object such as a coin, clip,
or pen causes direct connection of the positive (+) and
negative (-) terminals of the battery. (These look like metal
strips on the battery.) This might happen, for example,
when you carry a spare battery in your pocket or purse. A
short-circuit at the terminals may damage the battery or
the connecting object.
Avoid High Temperatures
Leaving the battery in hot or cold places, such as in a
closed car in summer or winter conditions, will reduce the
capacity and lifetime of the battery. For the best results,
try to keep the battery between 15°C and 25°C (59°F and
77°F). A device with a hot or cold battery may not work
temporarily, even when the battery is fully charged. Battery
performance is particularly limited in temperatures well
below freezing.
Battery Disposal
Do not dispose off batteries in a fire as they may explode.
Batteries may also explode if damaged. Dispose of
batteries according to local regulations and recycle when
possible. Do not dispose as household waste. Do not
dismantle, open or shred cells or batteries. In the event of
a battery leak, do not allow the liquid to come in contact
with the skin or eyes. In the event of leak or a hazard seek
medical help immediately.
Personal Medical Devices
Mobile phones may affect the operation of cardiac
pacemakers and other implanted equipment. Please
avoid placing the mobile phone over the pacemaker, for
example. in your breast pocket. When using the mobile
phone, place it at the ear opposite the pacemaker. If a
minimum distance of 15 cm (6 inches) is kept between the
mobile phone and the pacemaker, the risk of interference
is limited. If you suspect that interference is taking place,
immediately turn off your mobile phone. Contact your
cardiologist for more information. For other medical
devices, consult your physician and the manufacturer
of the device. Comply with instructions to switch off
the device or deactivate the RF transmitter function
when required, especially when posted in hospitals and
aeroplanes. Equipment used in these places may be
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