Operation Times; Nokia Battery Authentication Guidelines - Nokia N91 User Manual

Operation times

The BL-5C battery provides up to 3-4 hours of talk time and
up to 7-8 days of standby time when operating on a GSM
network. The BL-5C battery provides up to 2.5-3 hours of talk
time and up to 7 days of standby time when operating on a
WCDMA network. The BL-5C battery provides up to 10 hours
of music or radio playback. Operation times are estimates and
may vary depending on network conditions, charging, and
device use. Charging the battery with the AC-4 charger
takes up to 2 hours while the device is in standby mode.
Nokia battery authentication
guidelines
Always use original Nokia batteries for your safety. To check
that you are getting an original Nokia battery, purchase it
from an authorized Nokia dealer, look for the Nokia Original
Enhancements logo on the packaging and inspect the
hologram label using the following steps:
Successful completion of the four steps is not a total
assurance of the authenticity of the battery. If you have
any reason to believe that your battery is not an authentic
original Nokia battery, you should refrain from using it
and take it to the nearest authorized Nokia service point
or dealer for assistance. Your authorized Nokia service
point or dealer will inspect the battery for authenticity.
If authenticity cannot be verified, return the battery to
the place of purchase.
Authenticate hologram
1 When looking at the hologram
on the label, you should see the
Nokia connecting hands symbol
from one angle and the Nokia
Original Enhancements logo
when looking from another angle.
2 When you angle the hologram
left, right, down, and up, you
should see 1, 2, 3, and 4 dots
on each side respectively.
3 Scratch the side of the label
to reveal a 20-digit code,
for example
12345678919876543210. Turn
the battery so that the numbers
are facing upwards. The 20-digit
code reads starting from the
number at the top row followed
by the bottom row.
4 Confirm that the 20-digit code is valid by following
the instructions at www.nokia.com/batterycheck.
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