I found out that the phone decides to lower the charging amprege to 900ma after about 10-15% rise in charge no matter what level it started.
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Hi guys,
i want to ask - my phone charger has got these parameters -
input : 100-240VAC 50-60Hz 140mA
output : 5.0VDC 850mA
battery parameters :
BST-38
970mAh 3.6Wh
isn´t the charger too strong for the battery ?
charging my battery to 100% takes about an hour,sometimes less.
after charging the battery is quite hot.after 5-10 minutes the battery gets down to 80%, and it is stable from 80%.
i am charging just via USB now, because of i think that the charger is too strong and i think it can reduce battery life...?
what do you think ?
Yeah, it is strange.
The battery drains pretty fast after charging to 100% but later it is stable. Although I didn't notice that battery is hot, I think that charger charges battery too fast which is not good for battery IMO.
Mekki99 said:
Yeah, it is strange.
The battery drains pretty fast after charging to 100% but later it is stable. Although I didn't notice that battery is hot, I think that charger charges battery too fast which is not good for battery IMO.
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No, its not charging too fast. Lipoly batteries have pretty tight specifications and the phone switches the voltage itself, for terms of compatibility a usb voltage is used (so less hardware is needed to step voltages from different sources). It also means you can charge from your pc without having a bypass cable like older model phones.
The mA output of the charger doesnt really matter. A high mA means the voltage will be more stable where as a low mA supply could cause undesirable voltage fluctuations.
A lipoly battery cannot be slow charged or trickle charged, the chemistry doesnt work that way. Slow charging could actually cause the battery to explode or in the very least make its performance poorer.
The battery appears to drain quickly in the first 10% but its an illusion caused by the software on the phone which measures the mAh drop. A lipoly battery may discharge from 1200mA to 1000mA in 10 mins and reach a plateau where is holds 900-1000mA for several hours. All that is required is to reset the battery stats so the phone can generate a new profile over several recharge cycles.
As I said, lipoly charge until near capacity and stop. They dont trickle charge, the charging circuit actually switches off. Those people who leave their phones plugged in 8 hours overnight do it no favours as it justs cycles the charger on and off, this could actually skew the battery stats giving a false reading in the first 10%.
The best thing is to charge until full and then remove from the charger, you can always charge it again in the morning before you go out to boost the %. For the best battery life you should maintain a charge above half as this keeps the chemistry from breaking down. Never ever let it go flat! When the phone registers 0% its not, its a safety mechanism and it will still have above half the rated mAh. Charge a dead lipoly and it will explode violently.
Using alternative charging methods of a lipoly is VERY dangerous. People have lost houses or even their lives by fiddling with them. They are not a forgiving as lion, nimh or nicad. With that said lipoly are cheap, reliable, have a small form factor and offer a high output in comparison.
The best device for charging the battery is the phone charger as it has the highest mA and most stable voltage. The PC comes second as most are only rated 500mA and can have voltage fluctuations in the range of 10% or more. Third... Nothing, there is no third - only flames and misery.
Sent from my U20i using Tapatalk
To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the Sony Xperia X Compact can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!
Sometimes it is superfast and sometimes its normal!!
I have a charger with QC 3.0 and it charges with normal speed :/
It's reasonably quick with a quick charge charger. About an hour and a half for a full charge. But can get nearly half in half an hour.
I use a Choetech 55W QC 3.0 USB-C charging station along with the same brand cables, and Anker cables. There are a lot of bad cables out there so you have to watch what you buy. I made sure these were certified because I didn't want to fry this device, or other devices hooked up to the XC (there's that one Google developer guy who tests them).
It can charge in under two hours and the phone's battery gives off quite a lot of heat as a result when it's drawing a proper high load - which can't possibly be good for it in the long-term. Is the battery still going to be good after a whole year of use? Same high heat output with a Samsung charger+cable (same brand respectively), so it's neither the charger or cable causing it, just a very warm battery.
Would not recommend sleeping with your device if it's hooked up to a QC outlet - needs to vent that heat -- if you roll over onto it, bad things might happen.
1% at 77~78% is 2:19.9s
Keep in mind, that by design, a battery will not maintain a constant high current -- rather -- drops off slowly as it nears capacity (safe charging), so using %/min. is not an accurate gauge in charge time. So this %/min. will be lower when the battery is at 1~30% than +30~100%. Charge circuits never go by percentage either, but by voltage. An accurate reading would be on a DC volt meter bench.
Shenanigans and errata: My phone stays at 100% for a while after a full charge compared to when it goes down from 99%, so this is not an accurate method to test "full" and "empty" states.
I am using the latest LineagOS. I thought Le Max 2 has QC3.0 support which should let it run at 12v charge voltage, but it does not.
The best it does is 9V and 1.6A (measured using usb meter) totaling to 14.4W. I tried the phone at room temperature, also cooled it down in fridge and tried again. Results are same. The battery was 1% - 3% at start.
Is this normal? I calculated and 14.4W if batteryt was charged to 4.35V makes roughly 3300mA which sounds rather low. I expected phone to go around 4100mA at least while charging.
More importantly, it never switches to 12V charging voltage. Is that normal?
my phone is going up to 4100mA while charging. On some roms you have to enable quick charge in your phones settings.
@LivingLing did you test with a program like Ampere or using a USB meter device? Because your ROM may be giving you incorrect values and it can't be trusted.
There is no quick charge option in LineageOS but I can see that phone is using quick charge because charger increase voltage to 9V. I am trying to understand why it wouldn't go to 12V
yurtesen said:
@LivingLing did you test with a program like Ampere or using a USB meter device? Because your ROM may be giving you incorrect values and it can't be trusted.
There is no quick charge option in LineageOS but I can see that phone is using quick charge because charger increase voltage to 9V. I am trying to understand why it wouldn't go to 12V
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No i didnt used anything like that, just mentioned the values given by the Rom. But my phone charges Form 10% to 100% in like 15 minutes. So thats actually pretty fast in my opinion.
That sounds impossible, make a screenshot from the charging graph please. That would be something about 10A charging current...
I get about 4,5A when I activate QC on the EUI
@LivingLing Your phone must be broken if you can charge 0 to 100% in 15 minutes. You can't really charge a lithium battery very fast after about 80% and thats why quick charge implementations never talk about 0 to 100% charge time.
With lithium battery, most implementations set the input voltage to about 4.35V and battery charges as fast as it can pull power. This slows down when battery is near full.
I recommend you to get a USB meter, they cost few dollars anyway and quite cool devices.
Ever since I rooted my phone, I've noticed that the battery gauge/meter is way off. I keep an eye on the charging voltage and try to pull the plug around 3.92 volts. Problem is, the gauge is often in the 20s or 30s at that voltage until I pull the battery, wait a few minutes, and then reinsert and boot up. Then it's fine for a while, but I notice it creeping down even though I keep topping it off with a charge to keep it around 3.92 volts. For instance, if I go to bed with it at 50% and a 3.92 charge voltage (just before pulling the plug), it will often (not always- can't figure out why) be in the 20s by the morning (but with a voltage close to what I went to sleep with). The longer I use it during the day, the lower the meter shows, even though I periodically recharge to 3.92 volts.
What's going on? Do I have to fully deplete the battery and charge (recalibrate)to full to have an accurate (or somewhat accurate) battery gauge? Do I have a bad battery (this battery has been used only a couple months)? Is something else going on here? Is this related to the rooting?Recommendations? Doesn't the os use battery voltage to calculate state of charge (%)? Why does the % keep creeping down, despite the fairly constant voltage?
Your knowledge and advice very much appreciated!!!
Hi guys does anyone know how we can limit voltage when we charge ur phone?
What i use is rooted phone with ACC + AccA ront end but some bug you always have to check because most time AccA doesnt apply limit voltage as i ask.
Any better solution?
Why you need to limit the voltage? If you want to help battery to stay in good health for longer you should limit the charge current instead. Easiest way to do that is to use older charger with lower wattage. I usually charge my pixel 6 from my laptop which has type c ports with usb power delivery support and are limited to 12 watts so charge current never exceeds 2.1 ampers. I have also tested my old power bank and cable and there power is limited to even lower 7.5 watts or 1.5 ampers of current.
On battery university they said, the voltage from the charge is the problem not the amp speed, for example when your phone is at 3.8v(30%) and you charge with a quick charge 3amp at 4.05v(not 4.25v) you quickly recharge until 60%(4v) and you slowly and you reach 4.05v(+-70%) and you can let your phone charging longer you want the voltage never go over 4.05v and at 4.05v the said atfter 2000 recharge cycle you still have 90% of brand new battery capacity.
Your phone said full charge at 4.25v but with lithium ion it overcharging and that really dommage you battery life.
So in real is not the % of capacity because when you charge your phone to 80% diring the charge process the voltage use to charge is 4.35v and that is bad for the battery
BU-808: How to Prolong Lithium-based Batteries
BU meta description needed...
batteryuniversity.com
"Every 0.10V drop below 4.20V/cell doubles the cycle but holds less capacity. Raising the voltage above 4.20V/cell would shorten the life. The readings reflect regular Li-ion charging to 4.20V/cell."