I recently replaced the BLP745 in my 7T Pro with a battery from AliExpress:
https://www.aliexpress.com/item/1005002600978294.html?spm=a2g0o.order_list.order_list_main.10.73251802ieDtdn
So far it's been good, I did the first charge to 100% last night. The phone was unplugged this morning at 100% and after two hours, battery is down to 97%. A lot better than my original battery which would have dropped from 100% to about 85% in about two hours.
It's premature to say if this battery will be any good, so I figured I'd ask if anyone else has had good luck with the battey they bought for their 7T pro?
AliExpress Battery:
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Old Battery:
I have bought a replacement battery for my 7T Pro from rounded.com, which seems to be genuine, but arrived in an overdischarged state. The voltage of the cell was so low that the BMS disabled output. When I awakened the battery by supplying a very small current to it, I measured the cell at 2.2 V. At this point, the battery might have taken some damage which may cause higher self-discharge and lower capacity and in the worst case it might even be unsafe as LiPo-batteries that were overdischarged at some point can develop internal short circuits when cycled.
Before replacing my current battery (which still has 84 % health), I wanted to make sure the replacement battery ist still good, so I charged it using a LiPo charger. It reported the capacity to be at 91 % percent of the design capacity, so it's at least better than the old battery, and I suspect the measurement to be on the low side.
Now I have discharged the battery to 3.8 V and will be watching how the voltage decreases over the next month to see if it has an increased self-discharge rate.
I suspect that all genuine replacement batteries you can buy right now suffer from this since OnePlus stopped battery production in 2019 or 2020 as far as I know, and if they haven't been charged since, they will have self-overdischarged by now. It's possible though that OnePlus keeps the batteries they use for replacement charged.
Edit: I just saw that your replacement battery was manufactured in 2022. But I think it's a bit sus. It would surprise me if they were still manufacturing new batteries for such an old device. Also the label on the replacement battery differs quite a bit from the original one. I saw on Aliexpress that AccuBattery has reported your battery to have a capacity of 98 %, has this value changed since then?
Related
Ok, here is my problem.
The battery indicator its stuck either at 100 % or 95%. I know my real batery life with a program (battery indicator pro).
It seems that the only way to charge it correctly is power it down and plug it to the charger (original by the way). If i charge it while is turned on, the indicator that signal the 100% charge never pops up.
I'm using the go launcher ex, its not rooted, and the stock rom (2.2.2 International).
PS:Yeah i know, my english is pretty bad, so please bear with me.
Mine gets stuck at 80%, both charging and discharging. After 3 or 4 hours at 80% it will go to 100% a few hours later. Hopefully they'll fix this on an update! The battery itself seems to be operating properly.
Well... I guess I take comfort in knowing that I am not the only one experiencing this odd bug. I have the exact behavior and like it's been said, my 5.0 player seems to have normal battery life. I just can't trust the charge indicator.
The method this device uses to estimate state of charge is VERY primitive.
It has a fixed table based purely on battery voltage - the problem is that battery voltage can vary quite a lot for a given state of charge depending on load.
https://github.com/Entropy512/linux_kernel_galaxyplayer/blob/master/drivers/power/adc_battery.h#L87
I'm not sure why they didn't use the MAX17040 fuel gauge that is built into the MAX8998 PMIC...
mV readings seem more accurate than %:
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mV readings are a poor estimate of state of charge, since they'll go up when on a charger, and down when under heavy load.
Our battery % indicator is derived directly from those mV readings. (Which is why our battery % estimate sucks.)
What IS odd is that you seem to have a case where the charger held flat at around 4060 mV for a while - which does correspond to an 80% reading. I think I've seen that once too, might be a kernel bug there, I need to look.
Showing 100% with the voltage dropping shouldn't have happened - I've never seen it myself.
I believe the "stuck" numbers are 80%, 100% and sometimes 65%. Happens every cycle for me, 80% being worst. But on a reboot, immediately drops 25-35% (depending how long it was stuck for). So if you reboot every hour, it will show good readings (but I reboot about once a month).
My tablets battery will say 100 then how down to 3% so ill turn it off then back on and it'll say like 35%. Then most recently its been stuck on 35-37% for some odd reason.
Did you guys try wiping the battery stats in CWM?
So I've been getting worse battery performance lately and decided to do some looking into what's going on with my battery. I've tried the battery calibration trick (wiping out the battery stats file), but I read somewhere that this shouldn't have any effect on the performance of your battery.
I've been using the program BatteryMix to monitor what's going on to see if I can find anything that's draining the battery. I only have a USB charger, so I don't know if this makes a difference, but there's an option where you can see at what time the device goes to what percentage, the temperature at that time, and the voltage of the battery. What's somewhat troubling to me is that the reported voltages at different battery percentages don't seem to match at all. For example, 3.90V was reported both at 43% and at 59%, with lots of fluctuations in between, both up and down. I wasn't really seriously using the phone at all during this time, I believe it was probably just sitting there charging in fact.
I'm just trying to figure out how to interpret this. If this is normal, what does the battery percentage even mean? And when the device plugged in at 100%, is it normal for that voltage to fluctuate? I have an OEM battery that's been in use for half a year and the program reports it as "GOOD", whatever that means. Can someone explain this or direct me to a site which explains how the OS deals with charging? Should I be getting an AC charger?
Yes, that's perfectly normal - the battery voltage can go up slightly when the load reduces, and is also dependant on temperature. You can see why voltage isn't generally reported to users!
Also, li-ion batteries don't drain in a linear fashion - they typically discharge like this:
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- When fully charged, and nearly flat they drain very quickly, but in between the voltage drain is much slower.
Was just going to post something similar to the chart above. At a constant load and temperature you could probably see a direct relation between battery voltage and percentage, something like the chart above.
The problem:
Lately, well it's been quite a while actually... my battery stats seems to jump whether i'm charging or discharging.
While charging sometimes it jumps from 30% > 80% > 100% within 15 minutes (this is what happened today) while discharging, it jumps from 90 > 50 (this quite often) then to 20% > 5% then off. My max usage time without charging is usually less than 1 hour.
I've tried to do battery reset (charging while the phone is off until full, reset battery data, then use it till it 100% drained)
I've tried to charge from 30% to about 80/90% then use it as usual.
I used original charger from motorola, used blackberry charger, samsung charger, no difference.
Unfortunately no good. Currently the ad hoc solution is to use battery powerbank constantly while I'm not near electrical plug. But its bulky and well not the best solution.
My question is, does the problem lies in the battery or at the battery controller. Is there anyway to test where the culprit is?
Thanks in advance
Battery daemon Moto uses is imperfect in calculating the battery percentage.
However, the jumps you experience and the backup you're getting, looks like your battery has worn out.
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neo.ank said:
Battery daemon Moto uses is imperfect in calculating the battery percentage.
However, the jumps you experience and the backup you're getting, looks like your battery has worn out.
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Hi, thanks for the input. My question then, will replacing the battery help to solves the problem? Cos lately the battery stats seldom runs over an hour. Here's a screenshot of my latest battery stats...
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Thanks in advance, all
galeshka said:
Hi, thanks for the input. My question then, will replacing the battery help to solves the problem? Cos lately the battery stats seldom runs over an hour. Here's a screenshot of my latest battery stats...
Thanks in advance, all
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Your battery is definitely worn out. Replace it.
A new battery will certainly remove the issues..
Use the 10% mod though else you might still have infrequent jumps..
Last night I used the wireless charger for the first time. Seemed to work great and had 100% when I woke up this morning.
It's about two hours later and I notice my battery is down to 55%. The phone is warmer than usual, two hours later as well. I haven't been doing anything special besides texting and some light Facebook.
For the last week I have been getting about 24 hours on one charge. The battery usage predicts I'll be out of juice after three hours.
I'm using this charger: PLESON Fast Wireless Charger Cell QI Fast Wireless Charging Pad Stand
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I have the same battery life (around 40% remaining when I go to bed each night) whether I use the wired charger or my Tylt Vu wireless charger to charge my phone at night. Granted, the Tylt Vu only uses slow charging. But if your phone is fully charged, it shouldn't matter which type of charger you use.
My first priority would be to check for rogue battery draining apps.
sn0warmy said:
But if your phone is fully charged, it shouldn't matter which type of charger you use.
My first priority would be to check for rogue battery draining apps.
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Right. I've heard discussions of whether different ways of charging can affect total life of battery... LIke QuickCharge might be rougher on battery than slow charging.
But if a battery is charged, then it's charged. It won't deplete faster in one cycle depending on how it's charged.
ChazzMatt said:
Right. I've heard discussions of whether different ways of charging can affect total life of battery... LIke QuickCharge might be rougher on battery than slow charging.
But if a battery is charged, then it's charged. It won't deplete faster in one cycle depending on how it's charged.
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Yes, makes sense. In my screen shot you can see my two highest battery drains. Is there another way to tell if an app is killing battery besides the list on the battery usage screen in the settings? The warmth of the phone even two hours after it was off the charger is a dead giveaway, but the app list was pretty sparse.
Thanks!
I just got the Realme GT 2 Pro after replacing my 3 year old Xiaomi one. I want to use this new phone for at least 5 years, and I've been learning ways to help the battery not die quickly. I've learned to charge the phone until 80% and I've been doing that for a week and a few days now. It does annoy me that the battery feels weak since I am missing 20% charge. I'm contemplating to just charge it normally, but on a 10W charger rather than the 65W charger it has. Should I continue charging it up to 80% or just use it normally?
20-80% is best but decay is inevitable
You could probably get AccA and set a charging cap.
https://github.com/MatteCarra/AccA
If you look at charging chart, the OS keeps battery at around 75% overnight
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Down the road, replacing battery does not seem hard.
AccA Need root?
I cannot see the point of this, and with all respect I doubt this phone would be worth using after 5 years. More likely will not get any security updates by then and I dont think it will have much custom support either. On the other hand the manufacturers just sh1thing out 100s of phones a year, god knows what phones we would have in 5 years time, but for example I wouldn't want to use an old Sami S8 or 9 as my daily phone.
It is a good device and I like its battery life. I use it as a secondary phone therefore I share the battery usage with my other phone. In my usage I get a day and a half or 2 days out and would still have around 30-35% left. That's when I normally charge my phones, never let it discharge totally. I have seen in some articles that some experts don't recommend charging it over 80% due to the quicker wear of the battery. Honestly I cannot back this up.
There are a few things however what I can.
Do not charge when the phone is in use, like you have a long gaming session and you charge at the same time. The heat is the biggest enemy of the battery and charging and intensively using the phone at the same time could cause quicker wear out.
The second thing I never do is plug it up to charge overnight. With the quick charge tech this device has, its not even needed because its charges up in around 30mins for me. As soon as charged I disconnect. I noticed on my older iPhone when I charged it overnight, it caused quicker wear.
The above is my experience had over the years using several smartphones, but I hope it helps. Or just good luck using your GT2 pro in 5 years time
sinergine said:
AccA Need root?
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Yes