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Yes, It
is normal but always charge using
manufacturer specified voltage charging
(110 v or 220 v). If the battery is
getting more hot while charging then
please don’t change the battery and
visit our nearest showroom (Link to the Nearest
Showroom page).
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In the event of any fire in the charging
area, would the destruction of the
batteries pose any hazard to burning or
volatilization of their contents?
Batteries
do not constitute any special fire
hazard. In the event of a serious fire,
the design of the cells in the battery
is such that they will open due to
melting of seals, and this might happen
with considerable release of pressure
from the hot contents. Remaining scrap
metal including cadmium (Cd) should be
treated as hazardous waste and disposed
of with appropriate precautions. While
this relates to Motorola Energy Systems
Group nickel cadmium batteries, Motorola
Energy Systems Group cannot state all
possible consequences when batteries are
exposed to fire. Under no circumstances
should batteries be disposed of in fire.
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Is a special or separate room
recommended for battery charging?
It
is recommended that the room in which
the charger is placed be well ventilated
and be at room temperature (approx.
25oC) and in accordance with the
charging guidelines.
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Battery
Tips
-
Initialize
new batteries or batteries that have
been stored for prolonged periods by
fully charging.
-
Charge
batteries every 6 months during
prolonged storage.
-
Avoid
recharging a fully charged battery.
Remember, each time the battery is
charged, one cycle of life is used,
and a battery has a limited number
of life cycles.
-
Do
not charge a hot battery; if a
battery is hot at the beginning of
charge, charge efficiency will be
greatly reduced. Nickel cadmium
batteries are most efficiently
charged at room temperature (25°C).
-
Do
not fast-charge a cold battery.
Charging a cold battery can cause
excessive internal pressures, cell
leakage, and catastrophic failure.
-
Do
not force discharge batteries below
one volt per cell. Excessive deep
discharge can significantly reduce
battery life.
-
Choose
the right battery the application.
Motorola Energy Systems Group offers
a variety of batteries with
different sizes, capacities, and
environmental use conditions.
-
Do
not use chemical cleaners to clean
batteries. Clean batteries only with
a mild soap and dry thoroughly with
a cloth.
-
Dispose
of used batteries properly and never
dispose of in fire. Any rechargeable
battery has a limited number of life
cycles; each time the battery is
charged and discharged, one cycle of
battery life is used.
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Getting
the most out of a battery
Always
change batteries as specified in the
catalogue / broachers of the phone.
Even
when not in use, batteries will slowly
lose their charge. To minimize
degradation, batteries should be stored
in a cool, dry environment. New
batteries can be stored for up to 2
years without significant loss to their
capacity or cycle life. Cycle life is
the number of charges and discharges
that a battery provides before the
battery is no longer usable. Batteries
that have been used should be stored in
a fully charged state. Batteries
normally need no maintenance other than
routine charging. Contacts may be
occasionally cleaned with a soft pencil
eraser. Wetting the battery or using
sandpaper on the contacts is not
advisable and can cause harm to the
battery.
As
a rule of thumb, for the most optimum
and safe performance, it is advisable to
use batteries and power supplies that
are designed specifically for the
product you will be using.
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Charging
Ni-MH Batteries
Nickel-metal
hydride batteries are compatible with
most existing Motorola Energy Systems
Group multi-unit and single unit rapid
chargers. Motorola Energy Systems Group
advises that use in slow or standard
rate chargers, as well as vehicular
chargers or adapters, is not
recommended. Long term use of continuous
slow or standard rate charging will
reduce the useful cycle life and
capacity of the batteries. Battery life
can be optimized if batteries are
removed from the rapid charger after the
charge cycle (a total charging window of
3 hours) is completed.
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Self
Discharge
Fully
charged batteries lose their charged
capacity even when not in use. This is
referred to as self discharge. The rate
of loss is not linear and is dependent
upon the ambient temperature, the
battery technology, the battery design,
and how the battery was manufactured.
Typical self discharge rates at room
temperature are as follows:
Nickel-Metal Hydride: 30% - 50% per
month
Nickel-Cadmium: 25% - 50% per month
Lithium ion: 5% - 10% per month
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Selecting
the Right Battery for your needs
When
choosing a battery, first determine how
the product that the battery powers is
going to be used. This product is
commonly referred to as the host device.
The host device may be a cellular phone,
two-way radio, or combination, a laptop
computer or any number of other portable
rechargeable products
A
critical question is how many hours of
operation are needed for one time
period? For example, consider a radio
that is used for eight working hours
daily. Those eight hours are considered
the duty cycle. A radio user generally
transmits part of the time (5%),
receives part of the time (5%) and on
stand-by the rest of the time (90%).
This 5 - 5 - 90 relationship can be
considered a standard for measuring
typical battery duty-cycle requirements.
Using
the data in the following paragraph, the
5 - 5- 90 duty-cycle, and a battery life
standard of eight hours, the minimum
battery capacity requirement can be
determined.
For
example, a typical HT600 (2W UHF)
portable radio has the following current
drains:
Transmit
825mA
Receive 149 mA
Standby 44mA
Knowing that, we can do the math using
the following formula:
Cr = 8 (0.05T + 0.05R + 0.9S)
Where
Cr = minimum battery capacity required
in mAH
T = transmit mode battery drain in mA
R = receive mode battery drain in mA
S = stand-by mode battery drain in mA
This
calculation yields 706mAH as the minimum
battery capacity requirement in
milliampere hours (mAH) for this
exercise. While this calculation serves
as a good example for calculating
average battery capacity requirements,
every radio user or system has different
requirements and applications.
While
this calculation serves as a good
example for calculating average battery
capacity requirements, every radio user
or system has different requirements and
applications. The formula is commonly
used for traditional portable two-way
radios; however, other communication
products such as cellular and data
devices use other formulas. For
instance, cellular calculates talk time
and standby time. Talk is the time spent
using a phone, while standby means the
phone is on ready to receive or place a
call. If a battery is rated at 1.5 hours
of talk time or 16 hours of standby
time, a user can power up a phone for 16
hours of standby time or talk for 1.5
hours. Typical usage will likely be a
combination of the two and result in an
actual use time between 1.5 and 16
hours.
Conclusion:
Depends
upon how frequent you use your mobile.
As a pack, supplier will supply 500mah
battery and this is enough for a normal
use. For extensive usage or for the
frequent travelers it’s recommended to
have a higher mAH (1000, 1200 mAH).
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Battery
Storage
Motorola
Energy Systems Group analyses show that
Nickel-cadmium, Nickel-metal hydride and
Lithium ion batteries should be stored
in cool, dry environments to obtain the
best operation. Batteries should be
recharged after prolonged storage prior
to use. A few storage tips include:
-
Store
batteries in a cool, dry
environment.
-
New
batteries can be stored for up to 2
years without significant loss in
capacity or cycle life.
-
Batteries
that have been used should be stored
in a fully charged state.
-
Don’t
forget to store in a non-metallic
package (Eg. Plastic case).
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Charging
A New Battery
Fully
charge a new battery before putting it
into service. This applies to either
rapid rate or standard rate chargers.
This will initialize the battery by
completing the formation of the cell
chemistry and enables the battery to
reach maximum capacity in future charge
cycles.
You
have to look in to your user manual of
your phone. But usually it is
recommended to change a new
battery for 8-10 hrs before use.
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Battery
Problems
-
The
Battery Will Not Take or Hold a
Charge.
-
Battery
is cold.
A
cold battery placed in a fast charger
may cause the charger to switch from the
fast charge ( red light ) to the slow
charge ( green light ) in less than the
normal time. Most chargers have a
protective circuit which will switch the
charge rate from a potentially damaging
high rate to a safer low charge rate.
The battery should be allowed to
stabilize at room temperature for about
an hour before charging.
-
Battery
is already charged.
A
partially charged battery will switch
from the fast rate to the slow rate in
less time than a completely discharged
battery. The length of time it takes to
switch will depend on the amount of
charge left in the battery when it is
put in the charger.
-
Battery
has no voltage.
At
times, the battery will not charge at
all and shows no voltage. This can be
caused by excessive heat due to a
malfunctioning charger or by an external
short circuit condition. This indicates
that the safety link has opened or that
the resettable fuse has tripped.
-
Fast
charge fails to terminate.
The
fast charge function of the charger may
no terminate when the battery has
reached the designed temperature cutoff
due to dirty contacts, line transients,
or a random malfunction. If this occurs,
batteries may continue to heat.
-
B.
The Battery will not operate the
device satisfactorily.
-
Battery
is not fully charged.
A
less than fully charged battery will not
operate the radio for as much time as a
fully charged battery. A premature low
battery indicator from the radio while
the radio still performs well, may be
caused by an incorrect threshold setting
of the low battery indicator circuitry.
Please refer to the radio service manual
for proper setting.
-
Battery
has been charged hot.
The
charge efficiency of a hot battery when
charged in a rapid charger will be
significantly reduced. A battery's
charge efficiency is greatest when
charged from + 10°C to +25°C.
-
Battery
has open link or broken intercell
connection.
In
this case the battery will neither
operate the radio nor take a charge.
Most chargers will indicate battery
failure under this condition. The
battery must be replaced.
-
Battery
has a dead cell.
A
shorted cell will result in lower than
normal terminal voltage, poor service
time and will cause the radio's low
battery indicator to activate in less
than the normal amount of time. A
voltage test using the Motorola Energy
Systems Group battery tester, RLN 4201B
will detect one or more shorted cells. A
battery with one or more shorted cells
should be replaced.
-
C.
The Battery is Mechanically Damaged.
-
Cracked
or Broken Case
This
is usually caused by a severe shock to
the battery. Motorola Energy Systems
Group batteries are tested with 4 foot
drops and six feet drops to all sides
and therefore should be able to sustain
most operating conditions. Because of
its rugged construction, a Motorola
Energy Systems Group battery often
continues to be serviceable electrically
long after its case has been
significantly damaged. However, no
attempt should be made to use a
case-damaged battery. Remember, cleaning
the battery with harsh chemicals can
degrade the case strength.
-
Case
Melted or Deformed
If
for some reason fast charge is not
terminated properly, the battery's
temperature will continue to rise. A
resettable temperature and current
sensitive safety device has been
designed into most Motorola Energy
Systems Group rechargeable batteries to
terminate charge on an emergency basis
to prevent damage to the charger or to
the equipment . Occasionally,
particularly in a hot (>40°C)
condition, the battery case may begin to
deform or darken in spots before the
safety devices are enabled. A deformed
or darkened battery is seldom usable and
indicates a probable malfunction of the
charger or other non-battery source.
-
Leakage
Sealed
Nickel-cadmium and Nickel-metal hydride
cells are equipped with self-resealing
vents to allow release of pressure
during overstress. Repeated
overstress/venting and the consequent
loss of electrolyte can raise battery
impedance, lower service time and
shorten battery life. When catastrophic
leakage occurs as a result of unusually
heavy or continued overstress, white
powder, corrosion or wetness may be
evident at the battery terminals. At
this point, the battery should be
replaced.
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Recycling
Batteries
Nickel-cadmium
(Ni-Cd) rechargeable batteries can be
recycled. However, recycling facilities
may not be available in all areas. Under
various U.S. state laws and the laws of
several other countries, Ni-Cd batteries
must be recycled or disposed of properly
and cannot be disposed of in landfills
or incinerators. Contact your local
waste management agency for specific
requirements and information in your
area.
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