Nokia 1506 User Manual page 56

when not in use. Do not leave a fully charged battery
connected to a charger, since overcharging may shorten
its lifetime. If left unused, a fully charged battery will lose
its charge over time.
Always try to keep the battery between 15°C and 25°C
(59°F and 77°F). Extreme temperatures reduce the
capacity and lifetime of the battery. A device with a hot or
cold battery may not work temporarily. Battery
performance is particularly limited in temperatures well
below freezing.
Do not short-circuit the battery. Accidental short-
circuiting 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. Short-circuiting the terminals may damage the
battery or the connecting object.
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. Please recycle
when possible. Do not dispose as household waste.
Do not dismantle, cut, open, crush, bend, deform,
puncture, or shred cells or batteries. In the event of a
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