My dad told me the phone was dead a while ago. Let me see if i can get him a new one。
I'm handing it over, mi13, tyrannosaurus 8 gen2, micro-screech, shivering, no scratches on the screen. I said dad, your phone's fine. He said you'd have 30% left in two hours of electric brushing。
Check battery health at 76%。
For that number, almost a cell phone with no problems went straight into the drawer for ash。
This is so typical. The cell phone, the chip, the screen, it's fine, the system can run and the battery can't hold it. And then people's first reaction is always -- it's time to change the phone. In fact, calmly, there's only one battery that's really dead, and the other parts live well。
I spent more than a hundred hours changing batteries in the rice industry, and the old man's been using them for a year and a half, making video calls every day, without delay。
It's because mi just had a swing. In august 2026, the original annual "service week" was upgraded directly to "service month" for a full month, with 101 machine battery services at a discount of 80 per cent. It's over, but there's still a rate behind this. Today we'll take this as a reference, and we'll figure out how to change the battery。
First of all, there's a price。
Over $47 was the cheapest, redmi 9a, 10a entry machines. The dominant type is around 123, the millimetres 12, 14 series, redmi k40 to k70, and most of the note series is at this price. There is a special treatment for the millimetre 13 series - not only can new batteries be replaced, but also can directly upgrade larger batteries, 13 standard editions from 4,500 ma to 4850 ma, and 151 ka. Fold the most expensive, mix fold the 174。
One hundred dollars, two or three thousand new machines, and anyone can count。
But the question is, should your phone be changed。
My own judgment is two criteria, not complicated。
Numbers first. The power saving and battery are found in the settings, and the lightning icon at the top right corner can see the battery's health. More than 85 per cent will not be lost, and between 80 per cent and 85 per cent of the voyages will shrunk, and less than 80 per cent will basically remain with the recharging treasure。
Second look at feelings. It's not enough to use electricity for half a day, it's hot on the back, it's cold and it's off. There is also a situation where no matter how healthy it is, do not hesitate — and change immediately。

But there's one thing to say. If your phone itself is stuck, it's going to be turned around, it's going to be packed, it doesn't mean anything, it's going to be a lifetime。
I'm not talking to anyone, it's the roadside shop that's too deep。
The people's network has written about this before. The shanghai police have solved a case involving over 30 million people for the maintenance of false maintenance under the low-cost line of the gang. Journalists ran eight shops with the same phone, reporting more than 500, and seven individual shops under 200. Listen cheap, go in there and make up more than one。
The most common moves are the blurry of the originals and the original plants. I told you the original battery was the same. It's a classic poor use of information. It's not like you're on the main plate. You can't see it。
Even if we meet a shifu master, there's an easy thing to ignore -- waterproof glue. The official change will reset, and the third party will largely ignore this step, and the ip68 waterproofing will be destroyed. If you care about water protection, you can only choose the official ip68 logo。
Save those scores of bets. It's not worth it。
After that, a few things are taken care of on a day-to-day basis. The charge is applied to 100 per cent and 20 per cent to 80 per cent of the chargers. Don't play games while you're busy. High temperature is the first killer of lithium batteries. Full monthly charge of calibration. These aren't genres. The physical properties of lithium batteries are there。
I'll make a final check。
At least 1,500 for a passing new machine, 2,000 for the main flagship. The official battery is changed, the entrance machine is less than 50, the mainstream machine is in the early 100s. It's at least another year and a half to two years。
In particular, the cell phones used by the elderly in their homes are micro-intelligence, short videos, telephones, cell phone performance, and batteries. Instead of spending 2,000 to re-adapt a new cell phone, it would be better to spend more than a hundred old machines on their lives and save money。
If the plane goes down, don't rush down the new machine and check the battery's health, it'll take a hundred bucks。
How healthy is the battery? Are you going to change the battery or just get on the new plane




