Change battery thresholds in ROM? Dmitry

[Clocker]

The Fullpower app (mobile-stream) is not totally satisfactory since a reset renders your device useless.

Is it possible to edit the values in flash ROM?

[Romeol]

So buy the full version. That's what happens when you buy the full version. Resets won't matter.

[ahsirg]

here's a workaround:
1. buy fullpower
2. use jackflash to put it in ROM
maybe it'll work

[tosbsas]

I thought he meant - when you are very down on battery power the palm will not start after a reset - because of no enough power.

Ruben

[Romeol]

Fullpower changes shutdown voltage. Once you reset, it goes under the original shutdown voltage. Full version of Fullpower makes it so that the shutdown voltage stays the same, even after a soft reset. Thus, he just wants a hack to circumvent buying Fullpower.

[Clocker]

Fullpower changes shutdown voltage. Once you reset, it goes under the original shutdown voltage. Full version of Fullpower makes it so that the shutdown voltage stays the same, even after a soft reset. Thus, he just wants a hack to circumvent buying Fullpower.


Actually no. If you reset while under the original thresholds your palm is temporarily disabled until you get to the nearest charger. I have full version BTW :p

[tosbsas]

same here- that is the problem

Ruben

[palmtastic]

Rom = 3.75v
Full Power = 3.50v
Actual = 3.60v
Result: Palm is still operational, provided there is no reset.

Then this happens: You do a reset or an app causes a reset
Rom = 3.75v
Full Power = not yet running after the reset
Actual = 3.60v
Results: Palm refuses to turn on until the battery is charged to above 3.75v

Is that the scenario Clocker referred to ?

If someone can set Rom=3.50v, then after a reset with Actual=3.60v, the Palm will turn on requiring no charging yet.

[tosbsas]

that's at least my scenario (:-)) sometimes using the reset pin helps (:-)

Ruben

[dmitrygr]

i CAN do it. but not too sure it is worth the time. surely extra 20 minutes of power do not matter

[palmtastic]

i CAN do it. but not too sure it is worth the time. surely extra 20 minutes of power do not matter

There was one occasion when I travelled on a long flight watching a movie on my T3 with FullPower activated. Then a datebook alarm went off and crashed the movie player causing a reset of the T3. Unfortunately, the battery voltage was lower than the Rom setting and the T3 was as dead as stone until the plane touched down a couple of hours later. There were electric wall sockets at the airport hall. But I still needed to wait a while for the T3 battery to rise above the rom setting before I can read the alarm message. So an app that could set the rom limit to a lower value would be very valuable. I could have been able to read the alarm message during the flight.

The irony of it all was that the message reminded me to bring along my battery extender. But the alarm date was inadvertantly set to 1 day too late.
:(

[drwho]

i CAN do it. but not too sure it is worth the time. surely extra 20 minutes of power do not matter
Where did you get that figure of 20 mins from? My experience with Fullpower was that my T3 went from 4 1/2 hours to 6. I think 33% is worth the time (but I know you're busy)

[Clocker]

actually the T3 with "voltage step offset"=-2 (as per fullpower) benefits greatly from lowered thresholds. The gain is definitely more than 20 minutes.

http://img180.imageshack.us/img180/6317/cimg7224mediumph6.jpg

[tosbsas]

Just to second the request - Dimitry that sound like something you definitly should do (:-))

Ruben

[Romeol]

350? I always keep it at 325. :)

[raspabalsa]

i CAN do it. but not too sure it is worth the time. surely extra 20 minutes of power do not matter
As said above, it's more than 20 min. Besides, my T3 has a 3400mAH battery, so it's several hours of extra time for me.

I too am interested in an app that will fix this problem with FullPower.

BTW, I have the retail version of FullPower installed on my T3's flash memory, and it works ok, but of course the problem with resets persists.

[tosbsas]

hey you got 3400 - how??

Ruben

[raspabalsa]

I replaced the original 900mAH battery (it wouldn't hold charge) with four 850mAH batteries, one inside the case and the three others attached to the back of the T3's case. The four batteries are connected in parallel, and the cables from the external ones get into the case through one of the holes of the flip cover. With these batteries I get over 8 hours of continuous video playback using TCPMP @ 470MHz :cool: . Or, I get over a week of "normal" use.

[tosbsas]

whow

Ruben

By the way new battery is great - thanks again for your help

[raspabalsa]

You're welcome, Ruben. I'm glad to know your new battery is working fine.

[Romeol]

You should set your shutdown to 320, like me. You'd get a lot more out of them. Explain a bit more on the battery mod though, if you will. JAm said that over 3 batts connected in parallel, at least Lion, will create a voltage imbalance when charging and thus an improper gauge when charging that is potentially volatile. How did you circumvent this obstacle?

[tosbsas]

you got the t3 on 3,20??

Ruben

[Romeol]

Yeah. It goes better that way. It gets to 3.39 before it actually goes out, but I put it low anyways.

[Bexuanmai]

@ruben : how does your T|T3 look like ?

[junglemike]

The time gain can be variable due to number of reasons thta i will now explain.
With my 3150mah T3 it is definitely number of hours, as with raspabalsa's case.
But even with default 900mah battery it is usually more than 20min.

The thing is that consumption current can very from 60 to 390 mA (data measured by me yers ago) and because of that battery's internal resistance can vastly cnange working time, because with greater current, more current is eaten by battery itself (this is what internal resistance means.)
Consider this example. This graph is not relevan to palms, It is taken from another forum altogether. And yet it is a discharge graph of lithium-ion (polymer) battery so it perfectly demonstrates the principle.
http://img.photobucket.com/albums/v482/SilverFoxCPF/MicroFire150AatVariousRates.gif
NOw imagine that lowest working voltage for device X is 3.5v
@ 1.0Amp discharge close to 100% energy will be utilized (prefect case)
@ 3.0Amp -||- some ~50% will be utilized
@ 5.0Amp -||- your device will go off almost immediately hardly using any energy.
That's why FullPower gives much more % benefit when watching movies on overcklocked, max brightness device, than using e-book reader
And FullPower benefit simply cannot be a single % - figure.

[tosbsas]

@ruben : how does your T|T3 look like ?

completely normal (:-))

@junglemike
Is 3,20 or 3,25 not dangerous for the battery? Got a Ion Polymr 1000 mAH

Ruben

[raspabalsa]

Explain a bit more on the battery mod though, if you will. JAm said that over 3 batts connected in parallel, at least Lion, will create a voltage imbalance when charging and thus an improper gauge when charging that is potentially volatile. How did you circumvent this obstacle?
There is no reason why the voltage would get imbalanced if the connection is properly made. Some laptop batteries are made of, I think, about 10 Li-Ions connected in parallel or series, or a combination of both. The imbalance problem can be caused by incorrect wire gauge selection or faulty soldering, both of which can create a high resistance path and voltage drop at the fault points. That did happen when I first tried this mod. The last battery in the pack was several mV below the one inside the case, and would neither charge nor discharge at the same rate as the other batteries.

So now I use thick wire - sorry I don't have the exact gauge, but it's more than twice as thick as the cable in the original battery. And I have measured voltage at every battery during charge and discharge, and all batteries yield the exact same voltage.

You should set your shutdown to 320, like me. You'd get a lot more out of them.
Yeah. It goes better that way. It gets to 3.39 before it actually goes out, but I put it low anyways.
So your T3 actually powers off when it reaches 3.39V? If so then why do you keep the threshold at 3.20V? Is it just to avoid the battery warnings?

Does the SD card work properly at such low voltage? Then there is the problem that if your T3 resets at 3.39V, then it won't turn on until the battery has been charged to about 3.6V.

[Romeol]

Yeah, the batt warnings are the reason. :) I never have a problem with the SD slot. In any case. . . I figure I don't need a batt mod since i would always be charging it.