Cell phones use rechargeable lithium ion batteries. This type of battery
can recharge 300 to 500 charge cycles to its full capacity before it
will not charge fully. If your cell phone needs charging more often or
the charge lasts for several hours less than when the battery was new,
you may need a replacement battery. Testing the battery to obtain its
capacity will tell you if a new battery is needed.
Instructions
-
1
Plug the cell phone into its charger and plug the other end
in to an electrical outlet. Allow the battery charge to full capacity.
-
2
Press and hold the power button on the cell phone to turn it
off. Let the phone power down and remove the back cover to access the
battery.
-
3
Remove the battery and observe the label for the voltage. Most cell phone batteries are 3.4 to 4.5 volts.
-
4
Turn on a multimeter. A multimeter tests current flow in
voltage and amps and also resistance in a circuit. Place the black test
probe on the negative battery contact and the red test probe on the
positive battery contact. The contacts are on the edge or bottom of the
battery and should be marked negative (-) and positive (+).
-
5
Place one test probe on the left terminal and one on the
right, if the battery terminals are not marked. These are usually the
correct terminals and the meter will show a positive reading. If the
meter shows a negative reading, move the left or right probe to the
middle terminal until one pair shows a positive reading.
-
6
Read the display on the multimeter. The voltage should be
the same or a little higher than the battery label due to the fact that
batteries hold an additional charge above the full charge mark when they
have just been charged.
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Nice information you got there. The change in current temperature is also responsible for battery degrading. Sometimes your phone cover can be a reason for overheating as some elements trap heat for more time than others. Such as plastic, and glass. I have been using a wooden phone case and it is something extraordinary looking and comfortable too.
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