Almost any Computer Laptop Battery is manufactured with Lithium Ion Cells. Dell INSPIRON 2600 Battery,
Lithium Ion can be very dangerous when treated improperly however has a
lot of advantages over other
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HP
Pavilion DV6700 adapter HP
Pavilion Dv9000 adaptertypes of Batteries. Some of the early Dell
Laptops did in fact explode on the table while idling and thank
goodness nobody got hurt. Due to this fact all Lithium Ion Battery
manufacturer have implemented a safety circuitry that prevents the
computer from overcharging the Battery Pack and monitors contantly the
state and condition of the pack. There are also many temperature sensors
built into the Battery Pack to shut off the charge current when a
certain temperature is reached. Most importantly is that the end of life
is actually not determined by the computer or any other Software that
monitors the condition of the battery.Dell INSPIRON 2600 Battery, Dell
INSPIRON 2650 Battery Dell Inspiron 6400 Battery, Dell Inspiron E1505
Battery All of these Software application only query the battery itself.
The Batery Pack has sophisticated electronics that provides the data
that is requested by an software application. I do not
Compaq Presario
CQ60 battery Compaq Presario
CQ61 battery know exactly how
the Battery communication Protocol is built and what it consists of,
however logically all charge cycles among other dynamic data and static
data is stored at Battery pack level. My guess would be some USB / or 2
wire protocol is used to communicate with the batteries Micro circuit.
The battery Packs are configured in two's i.e. one cell is made up of
two single cells connected in parallel to increase the amount of stored
energy per cell. In many cases a battery pack is made up of 8 cells
where two cells of them are configured in parallel and those in series.
Four of these battery cells will nominally produce a Voltage of 4*3 Volt
= 12 Volt. In reality the individual cell packs are higher at around
3.7V * 4 = 14.8V or higher. The controller circuit measures each pack
i.e. 3.7 V for the first two cells, 7.4 V for the second two cells, 11.1
V for the third two cells and 14.8V for the last two cell pack. In this
way the Micro can determine if any of the two cells are defective and
act accordingly, mostly does not allow any charging anymore if found to
be defective. The reason for that is if a two cell pack is short and the
charger is going to force electrical current into the cell, chances are
that this thing is going to blow into your face due to electro chemical
reaction. The Micro would have to be smart enough to also figure out if
the cell can hold the charge. Therefore they test the voltage after it
peaked and then again a few minutes later to see how far the voltage
dropped. If the value is within a predetermined number the
HP Pavilion DV6
battery Compaq Presario
CQ40 batterybattery will
allow normal usage. If not, for safety reasons it will say buddy thats
it! These multi cell Battery packs require a tremendous high quality
standard. It is common that in this configuration, if the cells are not
precisely matched, to have premature fasilure. Most manufacturer do some
matching, however find it too expensive to do precise matching since it
takes quite some time. Time is Money!!!!!! (At a Dell Price tag of
$150.00 or more one could expect a little more!)
One can of course theorize that some smart marketing dude would take
this fact to the companies advantage, however I believe that it is
primarily a Safety issue and the fact that the legal proceeds are far
more costly to the manufacturer, Dell INSPIRON 2650 Battery, if something blows up so they make the battery intelligent.
If for example one of the eight cells has developed a defect and this
can happen very quickly if a cell gets overheated several times (Lithium
Ion is very sensitive to heat), the total battery pack voltage drops by
a few hundred millivolt in a favorable case. In this case the battery
indicator will flash in a weird way, but the manufacturer usually fails
to document this visual feedback and leaves us in the dark. The only
thing we can do, is guess. Laptop computer don't need the full battery
voltage to operate properly and I would guess they will still work down
to 8 Volt battery voltage.Dell INSPIRON 2600 Battery, Dell INSPIRON 2650
Battery Dell Inspiron 6400 Battery, Dell Inspiron E1505 Battery Most
mondern Voltage Regulator need only between 1.4 to 3 Volt higher input
to regulate and stabelize the operating voltage of the computer
circuitry. This is why your computer will still work even if there is a
cell or two defective however will not hold a charge for very long since
internally the good cells try to level out the defective once. Again,
for safety reasons the Micro Controller on the Battery end might decide
that it is not safe to allow a charge and the pack is declared to be
dead.
The only way to bypass this condition, is to manipulate the data that
the Battery has collected over time. I can imagine that it is possible
to access permanent memory storage devices inside the battery and change
certain data cells. This sounds easy, but requires the knowledge of the
Hardware and Firmware used in the Batteries Control circuit. It would
be much
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SONY
VGP-BPS13 Battery HP Pavilion DV4
battery HP Pavilion DV5
battery easier to find a Battery supplier on the Internet and (I am
sorry to say) flip the bill for an after market battery pack that may be
reasonably priced.
Pheww, I wish I could have said the above in a one liner, but the subject is far to complex to just do that
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