Why iPhone Battery Health Drops

Why iPhone Battery Health Drops - How to Fix It in Bangladesh

Your iPhone battery starts at 100% health the day you unbox it. Within months, that number begins falling and for many iPhone users in Bangladesh, it falls faster than it should. The reasons are specific, the fixes are proven, and understanding both could save you thousands of taka in unnecessary repairs or premature upgrades.

Actually, iStock BD wants every Bangladeshi iPhone user to know about battery health, so we take the initiative to explain it clearly, with actionable solutions.

What Does iPhone Battery Health Actually Mean?

Battery health is the percentage of the maximum capacity of your iPhone battery over time to when it was new. On the initial purchase of a new iPhone, its battery health is set at 100%. This percentage will slowly drop as you use and recharge your phone.

The iPhone 14 and earlier models will still have 80% capacity after 500 charge cycles, while the iPhone 15 and newer will keep 80% of its capacity after 1,000 charge cycles, which is double the life of previous generations. 

You can check your battery health anytime: Settings → Battery → Battery Health & Charging

When your battery health drops out of the 80% range, Apple will recommend replacing your battery. Your iPhone can become sluggish, run out of juice or even fail to hold up all day below this point. 

Why Is Your iPhone Battery Health Dropping Fast?

Understanding the real causes is the first step to stopping the damage. Here are the biggest culprits you know, all extremely common among iPhone users in Bangladesh.

1. Bangladesh's Heat Is Damaging Your Battery

This is the least appreciated reason in Bangladesh. The heat is one of the major reasons for fast deterioration of battery health, and using your phone or leaving it in a warm environment definitely affects the battery's capacity to hold its charge over time. It does not matter whether it is on the dashboard of a car or in direct sunlight or near a window of the house you live in – every single day that you leave your iPhone in one of these places you are actively damaging its battery. 

2. Charging to 100% Every Night

If you are taking the battery to 100% and discharging it to 0%, this is harmful to the battery. The optimal level for battery condition is between 20% and 80%. The majority of Bangladeshi users are those who connect their phones on a daily basis and get them charged overnight. 

3. Using Fake or Non-Apple Chargers

This is a widespread problem in Bangladesh. Non-Apple-approved chargers or cables can reduce the current to the battery, thereby causing the battery to lose a lot of its health. There are many cheap local market chargers in the market, selling at Tk 150-300 that are actively damaging batteries worth thousands of taka. 

4. Heavy App Usage and Gaming

Intensive use like running resource-intensive apps, games, and social media applications requires high power consumption, which negatively impacts battery health over time. PUBG Mobile, Free Fire, and heavy social media multitasking are among the biggest battery health killers on iPhones in Bangladesh.

5. Too Many Charge Cycles

Last but not least, battery health is linked directly to charge cycle count; charging from 1% to 100% counts as one complete cycle. The more cycles completed, the lower the health drops. Users who charge multiple times per day accumulate cycles much faster than average.

iPhone Battery Health Drop Rate

On average, expect a drop of 1–2% per month with normal use. Some months may show no drop at all, while others may show slightly more.

How to Fix and Prevent iPhone Battery Health From Dropping

• These are the tried and tested steps that every iPhone user in Bangladesh should take from today, recommended by Apple.

• Enable Optimised Battery Charging → Settings → Battery → Battery Health & Charging → turn ON. This will learn your charging pattern and prevent charging at 80% if you don't need it.

• Ideally, maintain an iPhone battery level in the range of 20% to 80%. Don't fully charge the battery every day.

• Don't leave your iPhone in the sun or hot car: the warmest enemy of your battery is Bangladesh's heat.

• Refrain from using non-apple certified MFi chargers or cables – which are available at iStock BD stores. Do not use local market chargers which are cheap.

• On heavy usage days, activate low power mode – Settings – Battery – Low Power Mode.

• Turn off background app refreshes and/or decrease screen brightness: Settings > General > Background App Refresh (OFF) and/or Settings > Display & Brightness (Brightness: Decrease).

• Don't use wireless charging for everyday use: It produces extra heat and makes batteries run out quicker than wired charging.

• Update iOS - Apple has improved the batteries with every iOS update.