[Q] How to lower the charge voltage limit - Galaxy S I9000 Q&A, Help & Troubleshooting

Hi,
the SGS charges its Li-Ion battery beyond 4,2V
This overcharge increases the autonomy but reduces the lifetime of the battery (especially if warm)
Does someone know if it's possible to lower this charge voltage limit to something like 4,15V to prolong battery life.
thanks

no solution ? (maybe with a hack in the battery stats file ?)

Related

[Q] battery life not improving with undervolt on Setiron reoriented kernel

I have been using setiron's reoriented kernel for awhile now with the Voltage control app set at -75mV for 100, 200, & 400mhz and -50mV for all other frequencies. I am not having any stability issues and the voltages are sticking after reboot. However, I was expecting a pretty significant increase in battery life due to the undervolting and I have seen next to nothing. Battery life is not bad by any means but in real world use is pretty comparable to what I was getting at stock voltage.
people seem to be reporting really big increases in battery life, so I'm a little confused. have I not UV'd by enough? if that were the case I would expect to see at least some battery improvement.
I wiped battery stats/recalibrated the battery when I flashed. I do have BLN enabled, but my understanding is that this causes a really small amount of battery drain. any thoughts?
How much % of battery you loose after night|?
while idle with the screen off (background data enabled) I lose about 1-2% per hour. I lost 10% overnight most recently and I was asleep for 7 hours. that is about the same that I was getting at stock voltage.
all i can sya, is thst you losing not many %
tehsam said:
while idle with the screen off (background data enabled) I lose about 1-2% per hour. I lost 10% overnight most recently and I was asleep for 7 hours. that is about the same that I was getting at stock voltage.
Click to expand...
Click to collapse
If you are in a weaker signal area, then the cell phone radio is going to work just as hard no matter what the CPU voltage.
tehsam said:
I have been using setiron's reoriented kernel for awhile now with the Voltage control app set at -75mV for 100, 200, & 400mhz and -50mV for all other frequencies. I am not having any stability issues and the voltages are sticking after reboot. However, I was expecting a pretty significant increase in battery life due to the undervolting and I have seen next to nothing. Battery life is not bad by any means but in real world use is pretty comparable to what I was getting at stock voltage.
people seem to be reporting really big increases in battery life, so I'm a little confused. have I not UV'd by enough? if that were the case I would expect to see at least some battery improvement.
I wiped battery stats/recalibrated the battery when I flashed. I do have BLN enabled, but my understanding is that this causes a really small amount of battery drain. any thoughts?
Click to expand...
Click to collapse
Battery drain can be a symptom of i9000 kernel and captivate modem.
Changing the modem and keeping 850mhz is a multi step process. I tried the kernel you are talking about but it's over rated.
if you want battery life flash a 2.1 rom and use unhelpful's kernel, 1.4.1 was the most stable on my phone but it doesn't have voodoo. 1.6 has voodoo and 1.7 has voodoo and clockwork recovery if I remember right. But I had random restarts, others did not report the same problems so who knows.
I would wait for captivate froyo source to drop. I'm getting decent life with cognition and no undervolting.
Edit after reading the whole thread your battery life seems normal, I don't see any problem, you can try more undervolt but test the phone completely. Make sure it doesn't freeze randomly, or on shutdown. Also test it with the charger plugged in, extra heat from the battery charging can affect stability.
Sent from my SAMSUNG-SGH-I897

[Q] Discrepancies in voltage-based battery level and system returned values.

I'm using the 1800 mAh aftermarket battery, but my voltage based and system returned values are ridiculously different. I think I've got lots of battery left,but the system shuts down when the system returned value shows zero, yet the voltage based may still show as high as 50%.
What's with the discrepancy? How do I fix it? I've run battery calibrators, but to no avail.
Thanks in advance.

Cpu temp & mA charging App

Does anybody know of an App that will Display Cpu use battery charge mA and temperature?
I have apps that do some but not all.
Thanks on advance.
temp+cpu v2
displays the temp, the speed the cpu is running and free ram, doesnt disaaly the ma tho
Battery monitor widget by 3c. Displays battery level, voltage, temperature in notifications bar.
It also has battery history, high temperature and voltage, full charge and charge complete alerts.
Perfect system monitor showed promise but does not work on my install
Did you try BMW ?
You need to download notifications separately.
Boy124 said:
Did you try BMW ?
You need to download notifications separately.
Click to expand...
Click to collapse
I keep seeing it but thought it was something to do with the car!
What info can it display?
Battery temp, battery level, ma, estimation.
---------- Post added at 06:48 AM ---------- Previous post was at 06:45 AM ----------
It can display temp, level, ma on notification bar. You do not need to pull it down.
I find BMW really useful for monitoring the battery drain, yet afair Note's chipset does not provide direct mA values, so what BMW does instead is estimate the current based on % of battery usage over time - in other words - those are not exact values, and updates mores frequent than 5 minutes are pointless and waste battery by itself
I am just wanting somthing that will tell me if the battery is still charging after it has reached 100% I had one instance where the battery got hot while full and sitting at Idle which is why I also wanted to see CPU on the battery graph

Wireless Charging

Hi guys,
I've been noticing the battery temperature hitting 38-40C when charging my phone through wireless. Is this normal? The temps hit that high when charging from 20% to around 80% and then I believe it starts to go down to around 34C. I tested my turbo charger and the max temp it hits is 36C.
The battery can handle much higher than that.
Just concerned because I know heat is the number #1 enemy of these batteries.
Get worried if it goes over 50

Reduced GPU when battery 20% or lower

Hi. Probably not only me having that issue. When battery goes to 20% or lower smarthphone reduces it's GPU power and battery usage. Games became inplayable. I tried to find right settings and fix it but without a result.
I tried to switch off that Battery Optimilization (google-> "How to turn off battery optimization on Huawei devices" (I'm a new user and cannot post links) but with no improvement.
Is there any way to fix it? Must be some fabric setting.

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