How does Aisi Assistant check battery health? Complete guide to cycle times and battery replacement testing

1. Where can I check battery health on Aisi Assistant?

After connecting the iPhone to the computer with a data cable, open Aisi Assistant and trust the device, enter"Device Information", find the Battery/Battery Life column, and you can see these key data:

• design capacity: The nominal capacity (mAh) of the battery when it leaves the factory is the baseline.
• Actual capacity/full capacity: The current capacity of a fully charged battery.
• Maximum capacity (%): Actual capacity ÷ design capacity, which is often referred to as "battery health."
• Number of cycles: The total number of complete charges and discharges reflects how much the battery has been used.

Determine whether the battery is new or old,The maximum capacity depends on "how much it decays", and the number of cycles depends on "how much it is used.", just look at the two together. By only looking at the health percentage, it is easy to be fooled by batteries with "good data but abnormal cycle times".

2. How healthy is the battery when it should be replaced?

The reference given by Apple is: the battery isConsumables, the maximum capacity will naturally decrease with use. Combined with actual use, a simple judgment interval is:

Simply put:More than 90%Basically no need to care;80%–90%It is normal aging and is determined by usage habits;Less than 80%It is recommended to replace it, especially if the battery life has dropped or automatically shuts down in cold weather, the experience will be significantly improved after replacement.

3. The battery health of AISI is different from that in the system. What should I do?

Many people find that the health level displayed by Aisi does not match the number in "Settings - Battery - Battery Health". Don’t panic yet:

• A difference of 1-2% is normal: The reading timing and algorithm of the two sides are slightly different, which is a normal fluctuation and does not need to be processed.
• Big difference: Do it once firstCycle charge calibration——Use the battery until it automatically shuts down, charge it again and leave it for a while to allow the system to relearn the battery capacity.
• Still not sure: Check whether there is a prompt in the system "Settings - Battery - Battery Health"Recalibrate(This process may take several weeks); or use AisiOne-click flashing/reflashing the systemCalibrate again.

4. How to use AIS to detect whether the iPhone battery has been replaced?

This is the biggest concern in second-hand transactions. Aisi'sInspection report - battery detailsSeveral hard clues can be given and compared one by one:

1. Battery serial number vs motherboard original record: If the two match, it is judged to be original; if they do not match, the battery has been replaced. This is the most direct one.
2. Is the number of cycles reasonable?: A machine that has been used for one or two years has only a few dozen cycles, which is obviously abnormal - most of the time the battery has been replaced with a new one to "beautify" the data.
3. Battery production date vs device manufacturing date: The production date of the battery is later than the factory date of the whole machine, which means it was installed later, that is, it has been replaced.
4. System/Report Tips:Appear"Important battery information" "This battery cannot be verified"etc., it can basically be judged as an unofficial replacement.

Looking at these four together is much more reliable than looking at "health" alone. If any item does not match, it is worth asking the seller and negotiating the price accordingly or giving up.

5. Third-party batteries and “This battery cannot be verified”

If the battery is replaced with a battery that is not original, or is original but has not been paired with a regular serial number, the system will often pop up."Unable to verify this battery". fromiOS 18.1Starting from now, Apple allows replacement of third-party batteriesYou can still check your health, but the system will still clearly mark it as non-original.

The conclusion is clear: the battery,Readings are deceiving, logic is not.. If you put the serial number, cycle number, production date, and activation date together, the traces of tampering can often not be hidden.

6. Check the battery when buying a second-hand mobile phone: a practical checklist

Condensing the above judgment into a comparison table that can be followed directly:

The battery is only part of the inspection. It is also necessary to check whether the screen, camera, and motherboard are original, and cooperation is recommended.Detailed explanation of AISI assistant machine inspectionLet's watch together; if you want to understand "Why the full green/health data can be changed", you can readIs the All-Green Aisi the original machine?. Please check the official website firstDownload the genuine Aisi Assistant, don’t use the green version which can tamper with readings.

7. Remember one sentence

The maximum capacity depends on the attenuation, the number of cycles depends on the usage, and the serial number and date check the authenticity.Only when the three sets of data are self-consistent and consistent with the age of the machine can you rest assured about the battery; as long as one of the three sets of data does not match up, no matter how beautiful the "100% original" product is, there will be a question mark.

FAQ

If you want to practice it, the download site has graphic and text versions.AISI Assistant machine inspection tutorial; To understand the differences in machine inspection between Aisi and 3uTools, seeAisi vs 3uTools vs iTunes。