I was just wondering, if i accidentally calibrated my battery when it was at 60% will my phone now never get the full use out of the battery? or if i charge it all the way and calibrate again will that fix it?
Andrew_han said:
I was just wondering, if i accidentally calibrated my battery when it was at 60% will my phone now never get the full use out of the battery? or if i charge it all the way and calibrate again will that fix it?
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Just do it again when your battery is at 100% and it should fix it.
Download a widget from Android Market that shows your current flowing to your battery.
Like Currentwidget...
If you calibrated on 60% your phone will now show 100% when it actually is not full...
Best thing to do is to leave it charging for minimum 3 hours, unplug the charger and then replug and use the Currentwidget to monitor your current...
The moment that the current goes from positive (green numbers) to negative (black numbers) you need to recalibrate your battery.
Then you will have the real 100% back...
Related
So most people should have heard about currentwidget by now, most people talk about it and use it to see what battery drain occurs during standby mode or airplane mode.
Now I'm sure most know this but incase you didn't, currentwidget helps to ensure your battery is fully charged as well. This is good for people that complain about their battery dropping quickly after a full charge.
You can use currentwidget to monitor your charge, when the battery says its 100% and led is green, currentwidget still shows power going to the battery in form of "ma". I noticed my battery said it was charged and eventho at 100%, currentwidget still showed "ma" is being delivered to the battery . After two hours only it showed 0ma, now I'm sure that means that eventho my phone said its charged, it wasn't fully charged until 0ma were displayed in currentwidget. Since I noticed that, I've been charging my battery "fully" and did notice my battery stayed much longer in the 90-100% aisle when being unplugged.
So if you feel ur battery drops too quickly from a full charge, use this widget to help monitor your charge.
yep, tnx for the tip, im useing clarus battery and its do the same - and i like the widigt so...
the current widget always shows some value of mA . how do we know when the battery is really full ?
Well with me after 1hour at 100%, it shows 0ma. That's when I know the battery is completely full and reached its maximum capacity.
I don't think waiting for the battery to get to the 0mA level is good for the battery performance. Usually the green LED comes on when the widget shows 50mA.
A high-charge concentration for a long time in a Li-Ion battery is bad for the battery. Thats why mobile phones have a little buffer to stop the entire capacity to be full, and try to lose the first part of the full charge as fast as possible.
Since i use some RC Helicopter with li-po/li-ion that both have the same way to produce energy, I have learned how to use this kind of battery and how to ensure a good battery life/durability.
There is no reason to worry about the battery if you follow those few recommendation (given by a battery producer):
-Your battery has to be charged with a current of 1C max (1C mean 1230mA for a 1230mAh capacity).
-Your battery voltage must not be over 4250mV. If you go over, you may damage the battery and risk random explosion/fire. In normal use, it's better to not go over 4200mV.
If you charge the battery with your phone, you will never be able to go over 4200mV because the charge stop automatically before.
-Your battery must not be under 3300mV. Same risk as above. In normal use, it is better to not go under 3450-3500mV to ensure a good battery durability (numbers of cycle charge/decharge). I think the phone show 0% at near of 3450mV, but never check this cause i never wait my phone to be as close to the death.
-Your battery has to be drain at a current of 10C max, i.e for desire HD , 12.30A (1230mAh x 10).
impossible to reach that current with your smartphone so no worries about burning your cpu with heavy bench.
Whatever you do respecting this will not be harmful for your battery.
Is it true that the porcentage of battery u have when u flash ur phone is the one that will be used as the new 100% ? also whats the procedure i should use to erase the battery stats? my phone dies in like 4 hours , let it discharge, charge completely and then?
I don't think so, cause i always flash my MS anytime i wish even when the indicator show <20%, or when charging on UBS
I also never bothered to charge fully before flashing. Though I think resetting battery stats does help indeed.
i also read something similar to this, someone told me to charge to full, then let the phone discharge UNTIL IT TURNS OFF BY ITSELF (=battery completely dead), then charge to full again and then delete the file batterystats.bin in /data/system folder (root required).
i suppose this is what you are talking about?
i will try this in a few hours (currently discharging the last % of my battery).
andreju said:
I also never bothered to charge fully before flashing. Though I think resetting battery stats does help indeed.
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Im confused im supposed era the stats before right after chanrging full charging the phone or i sould let it discharge m, then erase the stast and then full charge the phone?
What's your ROM?
On froyomod do you have option to calibrate battery and wipe battery status
Well, I've flashed it to FroyoRom with approx. 40% charge, played around a little, the next day when I was normally using it and my battery went down to 30% I deleted the battery stats, the system rebooted and voilla, I was at 50%
I don't know about this full charge - discharge - full charge - delete stats version. I guess I'll try it on an occasion and see what happens. At this moment I'm at 90% after being disconnected from charger for 5 hrs, though I wasn't using the phone much during this time.
...and currently finishing the same charge - after 1 day and 17 hrs currently at 20%. My Milestone never made it through the day without having to charge it through the night. Love it
The FroyoMod is really the best at the moment...
Havent you noticed that when you charge the phone powered off it takes like 40 % more time for the batetry to charge but it also makes the battery last longer? is there any truth in this or im just crazy?
Chad_Petree said:
Havent you noticed that when you charge the phone powered off it takes like 40 % more time for the batetry to charge but it also makes the battery last longer? is there any truth in this or im just crazy?
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This is a very well know issue related to battery calibration. Take a look at the many calibration threads to learn about bump charging.
Basically, it takes longer with the phone off (or when you pull and put back the battery while charging) because in some cases android was stopping the charge before a full charge.
Try this
Charge your phone to 100% (inside android)
Turn you phone off
Reboot
Pull the battery before it boots
Wait for the ?
Put the battery back in and notice the %
If it says 60%, then you had 40% of your battery not being charge.
If you leave it in that spot and wait for it to go to 100%, your battery will be better calibrated.
Sent from my Milstone running CM7
Caz666 said:
This is a very well know issue related to battery calibration. Take a look at the many calibration threads to learn about bump charging.
Basically, it takes longer with the phone off (or when you pull and put back the battery while charging) because in some cases android was stopping the charge before a full charge.
Try this
Charge your phone to 100% (inside android)
Turn you phone off
Reboot
Pull the battery before it boots
Wait for the ?
Put the battery back in and notice the %
If it says 60%, then you had 40% of your battery not being charge.
If you leave it in that spot and wait for it to go to 100%, your battery will be better calibrated.
Sent from my Milstone running CM7
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and this hasnt been fixed even with gingerbread? yeah i have gotten the message saying it has 60 % :/
I pay no attention to the battery meter anymore. I've found that it just reads low. It's not that it doesn't get a fully charge, the phone can't read the level correctly. I tried draining the battery once by playing an episode of Top Gear with the screen on full brightness. The phone said the battery was at 5% but the video kept playing for another 1.5 hours.
baoli said:
I pay no attention to the battery meter anymore. I've found that it just reads low. It's not that it doesn't get a fully charge, the phone can't read the level correctly. I tried draining the battery once by playing an episode of Top Gear with the screen on full brightness. The phone said the battery was at 5% but the video kept playing for another 1.5 hours.
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noup , when my batetry says low , it dies pretty quickly
Go with mV.
4200mV=100%
3200mV=0%
Battery monitor widget kicks ass
zeppelinrox said:
Go with mV.
4200mV=100%
3200mV=0%
Battery monitor widget kicks ass
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mV?
Chad_Petree said:
mV?
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millivolt. there are other ways to read out this value... I'm using osmonitor, since it's installed anyways
install the battery calibration app (by nema).
let the phone reach 100%, then reboot without unplugging. as soon as it reaches 100% again, immediately hit the calibration button and unplug. do not wait, thinking that you are going to trickle charge. for some reason, the battery will start discharging as soon as it hits 100% even when plugged in. i think it's a hardware issue.
this method has worked well for me. just wanted to share with the rest of you. cheers.
This App need root ?
sounds good
joaonds said:
This App need root ?
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yes, I believe so
joaonds said:
This App need root ?
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Click to collapse
Yes root is needed.
Sent from my Incredible S using XDA App
if u prefer to do the simpler way, (assuming u have root) . simply flash clockworkmod recovery and you'll have options for wiping battery stats. and the reason behind 95% after fully charging is because htc's stock battery is simply... cheap. u charge to 100%, and the battery thinks that 100% is too much, thus before reaching 100%, the charge is already cut. so the 100% is just eye candy.. the actual percentage at full charge might be 98 or 97, we dont know..
source : tested this with seidio extended 2500mah battery with seidio's charger and htc stock battery with htc stock charger.
results : seidio battery stays at 100% after full charge while htc stock battery instantly drops to 95% after one minute of full charge
if u prefer to do the simpler way, (assuming u have root) . simply flash clockworkmod recovery and you'll have options for wiping battery stats. and the reason behind 95% after fully charging is because htc's stock battery is simply... cheap. u charge to 100%, and the battery thinks that 100% is too much, thus before reaching 100%, the charge is already cut. so the 100% is just eye candy.. the actual percentage at full charge might be 98 or 97, we dont know..
source : tested this with seidio extended 2500mah battery with seidio's charger and htc stock battery with htc stock charger.
results : seidio battery stays at 100% after full charge while htc stock battery instantly drops to 95% after one minute of full charge
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Click to collapse
i don't see how it's easier to boot into recovery and erase battery stats manually when the app does it automatically
I'm Currently On Apocalypse Rom. I'm having Battery percentage issue.
I Charged 1Minute it can direct boost up to 100% Which mean it show Charged but when i plug off - the battery percentage drop directly. Anyway to fix this?
even i charged for 1 night, the battery can last only like 8hours.
The battery is new :O
i need real battery percentage =X
Search the market/ play for an app called "battery full notification"
It's light weight and non-invasive and will tell you when your battery its actually charged (your phone normally will say 100% long before it has competed it's charge. The only other way to tell if it has completely charged that i know of is to go to settings> about phone> status. The app has many options to let you know without disturbing you. Check it out.
Also, when you install a new ROM, do it with a full battery. You can help by calibrating your battery with an app or:
When your phone runs out of battery and dies, boot to recovery and wipe battery stats in the advanced menu of cwm. If you don't have enough charge to do this charge for a few seconds then boot to recovery.
Charge your phone until full and that's it.
Your battery on your ace is not great and if you use your phone as much as I do, 8 hours isn't bad!
I use my phone LOTS!