Does anyone know how much relative power the Motorola RAZR phones (I
use a V3) draw from their battery when enabled for Bluetooth
hands-free operation?
Since July 1, it has been illegal to use a handheld cell phone while
driving and a handsfree device is required. I use a Motorola T505
speakerphone device.
Ever since I started to use this device, my RAZR runs down in about 2
days (mostly standby time). I recently changed the battery so there
is a new one being used.
Best,
Bob
Robert A. Fink, M. D., FACS, P. C.
Neurological Surgery
2500 Milvia Street Suite 222
Berkeley, CA 94704-2636 USA
510-849-2555
On Tue, 05 Aug 2008 13:32:33 -0700, "Robert A. Fink, M. D."
<lynxer@comcast.net> wrote:
>Does anyone know how much relative power the Motorola RAZR phones (I
>use a V3) draw from their battery when enabled for Bluetooth
>hands-free operation?
>
>Since July 1, it has been illegal to use a handheld cell phone while
>driving and a handsfree device is required. I use a Motorola T505
>speakerphone device.
>
>Ever since I started to use this device, my RAZR runs down in about 2
>days (mostly standby time). I recently changed the battery so there
>is a new one being used.
>
>
>Best,
>
>Bob
>
>Robert A. Fink, M. D., FACS, P. C.
>Neurological Surgery
>2500 Milvia Street Suite 222
>Berkeley, CA 94704-2636 USA
>510-849-2555
>
>"Ex Tristitia Virtus"
It uses even more power if it's searching for a Blue Tooth device and
cant find one (like when you're not driving).
"Robert A. Fink, M. D." <lynxer@comcast.net> wrote in message
news:lkdh949mlum3glmmtu7u8ehhrr1b2pp36t@4ax.com...
> Does anyone know how much relative power the Motorola RAZR phones (I
> use a V3) draw from their battery when enabled for Bluetooth
> hands-free operation?
>
> Since July 1, it has been illegal to use a handheld cell phone while
> driving and a handsfree device is required. I use a Motorola T505
> speakerphone device.
>
> Ever since I started to use this device, my RAZR runs down in about 2
> days (mostly standby time). I recently changed the battery so there
> is a new one being used.
>
>
> Best,
>
> Bob
Bluetooth on the Razr V3 will kill the poor thing. I know from personal
experience; it's a HUGE draw on the battery, whether in use or not. Two days
is very good; I had to get in the habit of plugging mine in every single
day. If I actually used it, I'd get maybe 1/2 hour of use before the battery
would show red.
So far, my iPhone3G seems to be doing a whole lot better.
--Mike Jacoubowsky
Chain Reaction Bicycles www.ChainReaction.com
Redwood City & Los Altos, CA USA
"Robert A. Fink, M. D." <lynxer@comcast.net> wrote in
news:lkdh949mlum3glmmtu7u8ehhrr1b2pp36t@4ax.com:
> Does anyone know how much relative power the Motorola RAZR phones (I
> use a V3) draw from their battery when enabled for Bluetooth
> hands-free operation?
>
>
Doc, you've noticed something all Bluetooth users immediately see.
Bluetooth constantly talks to its connected devices, using power. It
checks to see if the device is still there, even when it's not being
used. 2400 Mhz radio transceivers aren't very efficient, even ones with
such tiny transmitters they'll only go 30 ft.
That's the nature of the beast. The solution will save you from
replacing that next battery....NEVER let a Li-Ion or Li-Polymer battery
run down except once every 2 months to reset the monitor IC built into
every battery, the reason they are so expensive. Plug your phone in
every night even if it's only 1/3 discharged and you'll get 4-8 years
out of its battery because deep discharging Li-Ion/Polymer batteries is
what destroys them. The IC will shut the battery off at 50% of its real
capacity for this reason.
I would try two fully discharge then immediately fully recharge cycles
as the IC on a new battery pack is always confused by the self-discharge
curve setting for months and months in the bubble pack before you got
it. Run the phone with everything on to quicken the discharge until it
simply refuses to boot any more. Immediately recharge it overnight,
then repeat the discharge-to-bootup-refusal sequence.
The IC has an Ampere-Hour meter built into it calibrated for this
specific battery. It's window slot is fixed. However, it recalibrates
the end points on the window...fully charged...minimum allowed
discharge...when you fully cycle it to adjust it to reality caused by
internal self-discharge, a nasty trait of Li-Ion/Polymer batteries the
industry doesn't like to talk to. You can't store these batteries
charged for long or they simply kill themselves by leaking internally.
Once the IC window is reset, the best way to make this technology last
for long periods is to simply recharge them every time you see the
recharge plug, the more recharging the better! They are like your car
battery...."float batteries"....unlike Nickel-Cadmium or Metal-Hydride
batteries which are stored dead to prevent internal corrosive plating.
If it will run 2 days, consider yourself lucky in 2008 with the ever-
increasing load of stuff a sellphone is asked to do. Just charge it on
your nightstand and you'll be all ready to Bluetooth your way through
the day.
.....and, if you've got my head open, I'd, personally, appreciate it if
you cut the damned sellphone off and concentrate on what you're doing!
Thanks!
On Wed, 06 Aug 2008 17:59:28 +0000, Larry <noone@home.com> wrote:
>....and, if you've got my head open, I'd, personally, appreciate it if
>you cut the damned sellphone off and concentrate on what you're doing!
>Thanks!
The nurses answer my phone when I am operating.... :-)
Thanks for the tips.
Best,
Bob
Robert A. Fink, M. D., FACS, P. C.
Neurological Surgery
2500 Milvia Street Suite 222
Berkeley, CA 94704-2636 USA
510-849-2555
On Tue, 05 Aug 2008 16:24:39 -0500, Ron <ronclifford@peoplepc.com>
wrote:
>It uses even more power if it's searching for a Blue Tooth device and
>cant find one (like when you're not driving).
I was under the impression that it stops searching when you turn off
the Bluetooth source. If not, how do you turn off (the phone) when
you leave the car?
Best,
Bob
Robert A. Fink, M. D., FACS, P. C.
Neurological Surgery
2500 Milvia Street Suite 222
Berkeley, CA 94704-2636 USA
510-849-2555
Bluetooth power drain
Linear Mode
