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Battery care
Battery performance
A rechargeable battery powers your device. Use the battery
only for its intended purpose. Never use any charger or bat-
tery that is damaged. If the battery is completely dis-
charged, 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. Do not leave
the fully charged battery connected to a charger, since over-
charging may shorten its lifetime. 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 bat-
tery. 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 discon-
nect 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. Always 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 particu-
larly limited in temperatures well below freezing.
Battery disposal
Do not dispose of 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 immedi-
ately.
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