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Turn the phone off. This will
probably be the most effective
and simple way of conserving
your battery’s power. Why? This
will help conserve energy and
also charge your phone. If you
don't plan on answering the
phone while you're sleeping or
after business hours, just turn it
off. Do the same if you are in an
area with no reception (such as a
subway or remote area, since
constantly searching for service
depletes the battery fairly quickly.
Some phones have an automatic
power save feature, but it takes
about 30 minutes with no
service to kick in. By then, much
battery power has been used. If
you don't need to receive or
make calls but are using a
smartphone as a PDA, disable the
phone functionality (flight mode).
Stop searching for a
signal. When you are
in an area with poor
or no signal, your
phone will constantly
look for a better
connection, and will
use up all your power
doing so. This is
easily understood if
you have ever
forgotten to turn off your phone
on a flight. The best way to
ensure longer battery life is to
make sure you have a great
signal where you use your
phone. If you don't have a
perfect signal, get a cell phone
repeater which will amplify the
signal to provide near perfect
reception anywhere.
Switch the vibrate function off
on your phone, using just the
ring tone. The vibrate function
uses additional battery power.
Keep the ring tone volume as low
as possible.
Turn off your
phone's back light.
The back light is what
makes the phone
easier to read in
bright light or
outside. However, the
light also uses battery
power. If you can get
by without it, your
battery will last
longer. If you have to
use the back light,
many phones will let you set the
amount of time to leave the back
light on. Shorten that amount of
time. Usually, one or two seconds
will be sufficient. Some phones
have an ambient light sensor,
which can turn off the back light
in bright conditions and enable it
in darker ones.
Avoid using unnecessary
features. If you know it will be a
while before your phone’s next
charge, don’t use the camera or
connect to the Internet. Flash
photography can drain your
battery especially quickly.
Keep calls short. This is obvious,
but how many times have you
heard someone on their mobile
phone say, "I think my battery’s
dying," and then continue their
conversation for several
minutes? Sometimes, the dying
battery is just an excuse to get
off the phone (and a good one,
at that), but if you really need to
conserve the battery, limit your
talk time.
Turn off Bluetooth. It will drain
your battery very quickly.
Same goes for WIFI, GPS, and
infrared capabilities, if your
phone has these features built
in. Keep them off except when
you need them to save power.
Use GSM rather than 3G - Using
your phone in 3G / Dual Mode
will drain the battery quicker
than if you just use GSM mode -
have a look at your phones
spec and you'll see it will quote
two different battery life times
- normally 50% more for pure
GSM use.
With a smartphone, avoid using
moving or animated pictures or
videos for your background.
Animated backgrounds will drain
the battery faster.
Use a black background
whenever possible. AMOLED
screens use a lot less power
displaying black instead of white
[1]. When web browsing use
sites like bGoog.com [1] that
display a black Google
background instead of white.
Prolong the Life of Your Battery
Initialize a new battery. New
batteries should be fully charged
before their first use to obtain
maximum capacity. Nickel-based
batteries should be charged for
16 hours initially and run
through 2-4 full charge/full
discharge cycles, while lithium
ion batteries should be charged
for about 5-6 hours. Ignore the
phone telling you that the battery
is full—this is normal but is not
accurate if the battery is not
initialized. #DO NOT fully
discharge a lithium-ion battery!
Unlike Ni-Cd batteries, lithium-ion
batteries' life is shortened every
time you fully discharge them.
Instead, charge them when the
battery meter shows one bar left.
Lithium-ion batteries, like most
rechargeable batteries, have a set
number of charges in them.[2]
Keep the battery cool. Put the
battery in the freezer or fridge.
Your battery will last longest if
used near room temperature,
and nothing wears on a battery
like extended exposure to high
temperatures. While you can’t
control the weather, you can
avoid leaving your phone in a hot
car or in direct sunlight, and you
don’t have to carry your phone in
your pocket, where your body
heat will raise its temperature. In
addition, check the battery while
it’s charging. If it seems
excessively hot, your charger may
be malfunctioning.
Charge your battery correctly,
in accordance with its type.
Most newer cell phones have
lithium-ion batteries, while older
ones generally have nickel-based
batteries. Read the label on the
back of the battery or in the
technical specifications in the
manual to determine which
yours is.
Nickel-based batteries (either
NiCd or NiMH) DO NOT generally
suffer from a misunderstood
phenomenon known as the
"memory effect." As described in
Wikipedia and many expert
sources,[3] the term "memory
effect" has been widely
mythologized to describe any
and all deterioration of NiCd (and
other battery chemistries), in
many cases misleading
consumers into further
shortening the lives of the
batteries through over-
discharging to "recondition"
them.[4]
[This section formerly read: If
you charge the battery partially
enough times, eventually the
battery "forgets" that it can
charge fully. A nickel-based
battery suffering from memory
effect can be reconditioned,
which requires the battery to be
completely discharged, then
completely recharged
(sometimes several times). The
appropriate length of time
between reconditionings varies.
A good rule to follow for nickel-
battery cell-phones is to
discharge them completely once
every two to three weeks, and
only when you have a charger
available. [5] ]
Lithium ion batteries can be
preserved by careful charging
and avoiding storing them at full
charge.[6] They do not require
"reconditioning."
Regardless of the battery type,
use only a charger rated for your
battery, and discontinue use of a
charger that causes the battery
to heat up excessively.
Store batteries properly. If your
battery will be out of use for a
while, disconnect it from the
phone and store it in a cool and
dry but not freezing place (an
airtight container in a
refrigerator, but not a freezer).
Don't keep it with metal objects
that might move around and
short-circuit the terminals.
Lithium ion batteries are not
rated to operate at refrigerated
temperatures, so let the battery
sit outside the refrigerator for at
least an hour before using it
again. Lithium ion batteries
oxidize least when they are
stored at 40% charge. Never
store a lithium battery at low
voltage. Recharge batteries after
storage.
Clean the battery contacts on
the battery and on the phone.
Over time, contacts may
accumulate dirt which reduce the
efficiency of energy transfer.
Clean them with a cotton swab
and rubbing or isopropyl alcohol.
If the contacts are two different
metals, such as gold and tin,
accelerated corrosion known as
"galvanic or bi-metallic" occurs.
Cutting the corrosion from the
contacts often requires solvents,
such as acetone or nail polish
remover. Be careful: these solvent
dissolve plastic, so use a Q-Tip to
avoid damaging the battery
housing or the phone.
Battery Failure Indicators
The usable time after recharging
is shortened.
The battery becomes unusually
warm during a recharge cycle.
The battery becomes unusually
warm during phone use.
The battery case may become
swollen. This is detectable by
feeling and viewing the inside/
phone-side of the battery case.
Also, when the battery is placed
inside/phone-side down on a
flat, smooth surface, it will rock
and will sustain a spin motion.
The case of a healthy battery is
flat, and the battery will not a
spin easily.
The battery develops a hard spot.
This is detectable on the inside/
phone-side surface of the battery
by gently pinching about the
surface between one's fingers.
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