jane1043 <jane1043.265a129@mobile-forum.co.uk> wrote in
news:jane1043.265a129@mobile-forum.co.uk:
> Bonus
> At least once per month try and use all of the battery life in your
> iPhone and iPod Touch. The lower you get the battery level the better.
> Then recharge your device to 100%. This will 'reset' your battery to
> the best of it's ability. The more you recharge your device, without
> letting the battery die completely, the lower your 'battery capacity'
> is. Doing this once per month(or even once per week) will keep your
> battery in tip top shape.
>
>
>
Many people are still convinced Lithium-Ion batteries run like old Ni-Cds
with some kind of memory problem. They do NOT.
Lithium Ion batteries (Li-Ion) are float batteries, acting much more like
the lead acid batteries that power your car than Ni-CD or Ni-Mh
rechargeable cells in your other devices. They LOVE to be floated and
charged as often as possible.
You cannot run them dead because running them dead just ONCE destroys
them for good, so the battery manufacturer has added a special
charge/discharge IC chip to each battery pack to keep an eye on the state
of the cell. This IC watches cell voltage and time and cuts the cell off
long before you get anywhere near "dead", the self-destruction level. It
also controls the charging of the cell, using its voltage and time
sensing to decide when to cut off the charging current when it THINKS the
cell is "full". Unfortunately, this is not a perfect system. The IC
runs charge and discharge over a curve that is programmed into it, the
average cell characteristics for this battery. Unfortunately, that
battery isn't perfect or "average", so the actual charge or discharge
state of the battery "drifts" away from this stored curve the IC is
running on.
To resync the IC to reality of the cell is quite simple. Discharge the
cell until the IC cuts it off and your device does a self shutdown. DO
NOT LEAVE THE BATTERY IN THIS CONDITION! IMMEDIATELY recharge the
battery until the IC shuts down the charging. This cycle resets the IC's
programming to closer match reality of the cell's condition. But, you
ONLY need to do this INFREQUENTLY, not often, becuase doing this shortens
cell life. Anything you do to run the cell towards dead...shortens cell
life. NEVER hesitate to plug the device into its charger at any
opportunity. You cannot overcharge a Li-Ion IC-controlled device. It
simply won't happen. Don't feel guilty about leaving it plugged in for
days or weeks when you're not using it, either. Li-Ion laptops are
plugged in for years and their cells last for years....mine included now
that I carry around the Nokia N800 Linux tablet instead of the laptop.
As to your point numbers:
10 - Keep it on but keep it PLUGGED INTO THE CHARGER. I never figured
out why sellphones had power switches, anyways. It only rings when its
running. Keeping it on the charger, see above...(c;
9 - Short sound effects use so little average power it makes no
difference.
8 - same as 9...not an issue
7 - Check email once an HOUR, not every 60 seconds. THAT saves power on
EDGE or wifi. If someone needs you instantly, they can CALL YOU!
6 - Anything you can do to shut that battery hog backlight down will make
the MOST difference in battery runtime. You don't need to see the pretty
screen to listen to internet radio. Make autoshutoff of the backlight as
short as you can tolerate.
5 - Bluetooth listening takes little. Bluetooth TRANSMITTING costs you.
4 - The dimmer the display - the longer it runs.
3 -
Edge runs all the time because the phone runs all the time. USING
Edge eats battery....like those 60 second email downloads. The phone
software eats the battery you can't really do anything about. The
further you are from the cell, the more it eats the battery because it
uses more power more often. Obviously, the more browsing and internet
usage, the more this transmitter eats the battery. It's very unfortunate
that Apple won't let you run software on the iPhone, choosing to eat your
battery with all these stupid web apps Safari accesses that cost your
battery runtime with a lot of unnecessary transmitting just to do
something a neat little LOCAL app could do at little cost....like a
shopping list, to do list, simple database, etc. But, alas, it was made
to make you DEPENDENT on using AIR to do all this.
2 - Not sure about SSH. I have SSH client and server on the N800
internet tablet and don't notice it eating the battery any worse with or
without it. I suppose it depends on how much data you transmit.
1 - Wifi is a transmitter. It only significantly transmits when you are
connected to a wifi node. It does broadcast itself and that costs you
some so shutting it down would save you some of that. The display eats
FAR more than the wifi unconnected.
It's very unfortunate you can't just swap a dead battery for a charged
one. It's the stupidest thing about iPhone and the Air...it's simply
cheapness, like using hotglue to hold the coaxial cables in place inside
it. I was amazed when I saw the youtube video on taking it apart....
Linear Mode
