battery health issue in iphone 17

Welcome and thank you for reaching out. 🤗

I am impressed that you managed to lose only 2% in 4 months. That is above average for a device that is in use every single day since purchase.

Lithium Ion batteries are rechargeable by design.

As part of that design are the electrolytes that hold a charge.

There are allot of steps and various machines that are used to construct a battery.

Between those assembly steps, the batteries are carefully inspected along the way, often in devices used to magnify the various components several times during the production process.

There are various tests to ensure that there are no leaks.

I used to assemble Li Ion batteries.

I can assure you that the failure rate is extremely low.

What you have experienced is normal and expected.

All rechargeable batteries are consumable components that become less effective as they chemically age.

Recent software updates can accelerate that process by adding features that consume more power.

As lithium-ion batteries chemically age, the amount of charge they can hold diminishes, resulting in shorter amounts of time before a device needs to be recharged.

Li Ion (Lithium Ion) batteries have recharging capabilities; however there are limits.

Temperature Effects on Li Ion Battery Life:

• Capacity loss in standby applications is largely determined by temperature
• Annual capacity loss tends to decline as the battery ages
• 80% remaining capacity is generally not the end of a lithium battery's useful life, but recommended by Apple for replacement

I recommend to slow charge your iPhone to maximize the charge capacity, battery health and efficiency. ⚡️🔋

NOTE: Temperature: Charge above -30°C and Discharge below 55°C. Apple won’t replace the battery until it reaches 80% capacity.

Battery Performance Tips:

• iPhone Battery and Performance.
• Check battery health and usage.
• Optimized Battery Charging.
• Maximizing Battery Life.
• Use Low Power Mode.
• About battery usage.
• Show battery percentage.

Click ▶︎ iPhone User Guide. 📖

Good luck! 👋🏼😉

Smiliñ 😎 Brian | Community Volunteer

Batteries degrade over time with usage due to chemical aging, there is no way to stop this.

You can expect about a 1% drop per 50 charging cycles (25 charging cycles for IPhone 14 and older) with average use on an iPhone. This is an approximation, that is why it may be plus or minus a few percent on a month to month basis. Apple recommends replacing the battery when it's reaches 80%.

About Lithium Ion Batteries

iPhone battery and performance - Apple Support (IN)

Here are some tips on maximizing battery life.

Batteries - Maximizing Performance - Apple

As for recommending a charging habit where you are not wasting Charge Cycles, I would use Optimized Charging and charge your phone all night, every night.

A Charge Cycle is the number of times your battery has discharged its full capacity, not the number of times it is charged. If you are not leaving it plugged in overnight, then your battery will be used to continue and maintain its cellular connection and for the normal background processing that is scheduled for when you are not using your device.

Your battery performance is entirely normal, expected and right on schedule.

If you are interested in some technical facts and details that will confirm this, please post back with information about the number of Charge Cycles that the battery has completed at this time.

If you have already made up your mind based on what you "feel" or other information that you might have "heard", you can calculate your actual, real battery performance based on the information that Kurtosis12 has already provided to you. Post back if you need some help with this.

riddhi148 wrote:

hey i got my ihoone 17 in may this year and by now its battery health has drained to 98% which is a bit heartbreaking what should i do to prevent it from further draining?

further its heats a lot when in use

There is no issue with your battery health.