Apple’s upcoming iPhone 18 Pro and Pro Max have taken another step toward launch after new 3C certification listings revealed their battery capacities. The latest regulatory filings provide one of the strongest indications yet of the battery upgrades coming to Apple’s next-generation flagship lineup.
According to the certification documents, the iPhone could receive its biggest battery increase in years, while the standard one is expected to get a more modest upgrade. Although Apple has not officially confirmed the specifications, certification listings are generally considered reliable because they are filed with regulatory authorities before launch.
Battery Capacities Confirmed
The newly discovered 3C certification reveals different battery capacities for regional variants of the upcoming smartphones.
iPhone 18 Pro Battery Capacity
The certification lists the following battery capacities for the iPhone 18 Pro:
- China model: 4,056mAh
- US eSIM model: 4,288mAh
Compared with the previous generation, this represents only a small increase, suggesting Apple may rely more on chipset efficiency than a significantly larger battery.
Battery Capacity
The larger iPhone 18 Pro Max receives a much more noticeable upgrade.
According to the 3C certification:
- China model: 5,391mAh
- US eSIM model: 5,567mAh
This is roughly a 500mAh increase over the previous Pro Max, making it one of the biggest battery upgrades Apple has introduced in recent years.
What the Battery Upgrade Means
The larger battery could significantly improve real-world battery life, especially when combined with Apple’s upcoming hardware improvements.
Better All-Day Battery Life
A larger battery should allow users to spend more time gaming, streaming videos, browsing, and using AI-powered features without reaching for the charger.
Improved Power Efficiency
Reports suggest the iPhone 18 Pro series will be powered by Apple’s A20 Pro chipset, which is expected to use a more advanced manufacturing process for better efficiency and performance. The combination of a bigger battery and a more efficient processor could deliver longer battery life than previous models.
iPhone 18 Pro Series Expected Specifications
Besides the battery upgrade, several other premium features have been rumoured.
Display
- 6.3-inch OLED display (iPhone 18 Pro)
- 6.9-inch OLED display (iPhone 18 Pro Max)
- 120Hz ProMotion refresh rate
- Smaller Dynamic Island
Performance
- Apple A20 Pro chipset
- Improved AI performance
- Faster graphics processing
Camera
- Triple 48MP rear camera system
- Periscope telephoto lens
- Variable aperture main camera (rumored)
- Enhanced computational photography
Battery
- 4,056mAh (China) / 4,288mAh (US) – iPhone 18 Pro
- 5,391mAh (China) / 5,567mAh (US) – iPhone 18 Pro Max
Some specifications remain based on leaks and have not been officially confirmed by Apple.
iPhone 18 Pro Series Expected Launch Date
Apple is widely expected to unveil the iPhone 18 Pro and iPhone 18 Pro Max during its traditional September 2026 launch event. More official details are likely to emerge as the launch date approaches.
iPhone 18 Pro Series Expected Price
While Apple has not announced pricing, industry estimates suggest:
Expected Pricing
- iPhone 18 Pro: Starting around $999
- iPhone 18 Pro Max: Starting around $1,199
Indian pricing is expected to be announced during the official launch.
Why This Leak Matters
The latest iPhone 18 Pro battery leak is significant because it comes from a regulatory certification rather than an ordinary rumour. The substantial battery increase for the 18 Pro Max suggests Apple is focusing not only on performance but also on delivering noticeably better battery life.
Combined with the expected A20 Pro chip, improved cameras, and software optimisations, the upcoming flagship could become one of Apple’s longest-lasting smartphones yet.
Should You Wait for the iPhone 18 Pro Series?
If battery life is one of your biggest priorities, the 18 Pro and especially the 18 Pro Max may be worth waiting for. The certification points to meaningful improvements that could make Apple’s next flagship lineup even more competitive.
However, buyers should remember that Apple has not officially confirmed these specifications, and some details could change before launch.
FAQs
1. What battery capacity does the iPhone 18 Pro have?
According to the 3C certification, the iPhone 18 Pro features a 4,056mAh battery for the China model and 4,288mAh for the US eSIM model.
2. What is the battery capacity of the iPhone 18 Pro Max?
The certification lists a 5,391mAh battery for the China model and 5,567mAh for the US eSIM version.
3. When will the iPhone 18 Pro and Pro Max launch?
Apple is expected to announce the iPhone 18 Pro lineup during its September 2026 launch event.
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