Is my battery ok? - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

Guys, i bought this phone just before 15 days and i observed that my battery reaches around 3800 mah only on full charge. Is this kind of behaviour normal? Shouldn't it reach 4000mah when i charge it to 100%?

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Conditioning 3500 mAh battery

Just bought a 3500 mAh battery off of ebay. I was wondering do i need to condition this battery? If so what are the steps? I see conflicting info all over the place.
thanks!
Conditioning? Like calibrating?
Some batteries said to drain it completely first then charge for 8 full hours to condition it. That's why i was wondering if there was anything i needed to do to get the maximum amount of battery life out of it.
That's a great question. Usually I let it drain fully, then fully recharge. It's just an old habit of mine with new batteries.
usually when you get a new battery itll have some charge in it you need to power the device on let it drain completely till it wont turn on at all then let the battery charge 8-10hrs and you should be good.

[Q] Does fast charging affect long term battery health?

Does fast charging Daily overnight reduce long term battery health? Is it a better choice to only fast charge when necessary and normal charge overnight?
I've reading about this lately but never came across a definite answer. I was hoping that someone could answer this for me.
Raymondlikesroot said:
Does fast charging Daily overnight reduce long term battery health? Is it a better choice to only fast charge when necessary and normal charge overnight?
I've reading about this lately but never came across a definite answer. I was hoping that someone could answer this for me.
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Depends on quality of the battery and the capacity of the charger.
In general batteries are charged with 10% of the capacity. For the Nexus 6 battery with a capacity of 3200ma/H, you need a charger with a capacity of 320ma. Assume you need 10 hours to fully charge the N6 with a charger capacity of 320ma.
In theory the N6 charger with his capacity of 1600ma will charge 5x faster.
But the the N6 charger is not permanently in this turbo mode. After some time it switches back to a lower capacity when the battery is partially charged.
Now your question. In turbo mode charger and battery dissipates heath and that is not good for the battery. So normal charge will be better.
But there is also battery drain when you use the N6, especially the nice amoled display.
Battery drain causes also warming up of the battery.
So the total battery life depends not only on (turbo) charging. Also the way the N6 is used.

quick charge time on nohon battey

I replaced my mi5's battery with one of the nohon brand. Now I can get to 5 hours of sot. Through amps I checked if the quick charge worked, I noticed a 2400 mAh charge current, with the old original battery I got to almost 3000. Use lineage 15.1, every now and then update to the latest firmware dev. Any of you who has a nohon battery can tell me what battery is being charged through the Ampere app? thank you
i need 1.30 hrs
I have noticed the same 2400 mAh max with this Nohon battery, but it's not a problem for me.

Way smaller battery or haven’t break-in the battery yet?

So I got my 5G last Thursday and have been use it alongside my XS Max (so it is not primary phone). Ran down the battery to auto shutdown and fully charge to full with phone off. I have a DROK USB Type-C Digital Multimeter (Amazon: B07448SCN6) in the line during charging so it is measure from the outside and not a phone app. The meter will auto stop counting when current draw is less than 0.1 A or 0.03 A so battery is guaranteed 100% full. The charger is an Anker 4-ports charger with IQ-something that doesn’t support quick changing on 5G so charging is limited to 5V 2.4 A max although the phone stayed below 1.2 A most of the time.
1st charge: 4:30 to charge 3790 mAh / 18.97 Wh
2nd charge: 3:35 to charge 3890 mAh / 20 Wh
Both numbers are quite below the 4500 mAh typical number on the actual battery so I test charging the 8 months old XS Max and it took 2:39 to charge 3120 mAh / 15.65 Wh. The phone turn itself on after plugging in and draw a constant 0.1 A (over 0.03 A phantom draw) after fully charging so I deducted 100 mAh from the 3120 number to 3020 mAh. That’s reasonable as XS Max’s battery is rated at 3174 mAh and losing 150 mAh after 8 months is not bad.
I’ll continue to monitor future charging to see if the number gets better but 600-700 mAh off rating is a lot. I know people in S10+ forum complaining about charging app giving them 3600-3800 mAh figures but that from an app and not an actual in-line meter. Hopefully it improves to at least 4300 mAh
I have 4235 mAh on mine based on 36 charges, it has always been around that on every charge, so definitely not 4500mAh. However the battery lasts longer than on the P30 Pro by a good amount, so I am OK with that. I would feel shortchanged if it were the reverse.
I have been using Accubattery Pro, and I believe it said initially that the phone's capacity was 4300 mAh. I manually changed its capacity to 4,500 mAh as advertised, but it's never been over 4,300 by its measurements. It's showing that its at 4277 capacity now after 34 charges. I have accidentally fallen asleep with it on the charger twice and let it charge to 100%. Every other charge session has been to 80% (+/- 2-3%). I'm a pretty heavy user, and I've only been close to powering off once at the end of the day, and that's after a charge to 80%. I've been pretty fortunate. I will say that I did not have the same success with the S10+ I had for a week or so before I returned it to pre-order the S10 5G.

Is the 27W Sonic Charger worth it?

I am wondering about if the 27W charger have a huge difference compared to the 18W charger
it's not a big enough difference to waste money on IMO
Threre isn't huge difference
yozora01x said:
I am wondering about if the 27W charger have a huge difference compared to the 18W charger
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well it depends , i bought it cause i always wanna max from the hardware.
The 27W charger charges my phone from 5 to 62% in 30mins and
5 to 93% in 1Hr.
And
charged 18 to 100% in 1Hr 10mins.
While in Stock 18W charger it charges 5 to 46% in 30mins so difference isn't huge but yes there is difference. The full charge takes about 1Hr 35mins from 5to 100 with 18W.
So basically the last 7mins takes 15mins to charge even with 27W charger. Maybe some kernel tweaks will do better job
pritish sahoo said:
well it depends , i bought it cause i always wanna max from the hardware.
The 27W charger charges my phone from 5 to 62% in 30mins and
5 to 93% in 1Hr.
And
charged 18 to 100% in 1Hr 10mins.
While in Stock 18W charger it charges 5 to 46% in 30mins so difference isn't huge but yes there is difference. The full charge takes about 1Hr 35mins from 5to 100 with 18W.
So basically the last 7mins takes 15mins to charge even with 27W charger. Maybe some kernel tweaks will do better job
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Click to collapse
That's normal and is the correct way to charge a battery safely and to prolong the battery. As the battery gets closer to full capacity the current should be dropped. Doing anything to force charging the battery quickly as it's close to full will, at best shorten the life of the battery, at worst it could cause the battery to explode.

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