iPhone 14 battery capacity: 3279 mAh

iPhone 14 battery capacity next to nearby models

The all iPhones page lists every model in one table.

iPhone 14 battery capacity versus the 14 Plus and Pro

The iPhone 14 family split into four phones with quite different batteries. The 14 Plus has the same chip as the 14 in a larger body, so it carries a much bigger cell and lasts noticeably longer. The 14 Pro and 14 Pro Max use a newer chip and an always-on display; the Pro's battery is close to the base 14 in size, while the Pro Max is the largest of the four. If battery life is your priority when buying a used iPhone 14 model, pick a Plus or a Pro Max for the longest runtime.

All four models report health the same way, under Battery Health in Settings, which is the best guide to how much of the original capacity a second hand phone still has.

Why Apple lists watt hours and hours, not mAh

Apple's battery uses a nominal voltage slightly different from most Android phones, so mAh alone can mislead when comparing across brands. Watt hours capture voltage as well. 12.68 Wh in the iPhone 14 is roughly the energy of a 3300 mAh Android cell at 3.85 V. On paper that trails the 5000 mAh cells inside most Android handsets, though in daily use the iPhone 14 keeps pace thanks to how closely Apple tunes its chip and iOS.

Checking your iPhone 14 battery health

Open Settings, then Battery, then the health entry, which newer iOS labels Battery Health and Charging. Maximum Capacity shows how much of the original 3279 mAh the cell still holds. Apple considers a battery worn once it drops below about 80 percent. The Apple battery support page explains what the readings mean.

When to replace it

• Maximum Capacity reads 79 percent or lower.
• The phone shuts down suddenly in the cold or during camera use.
• iOS shows a Service message under Battery Health.
• The screen or back looks raised at an edge.

Apple and its authorised service providers fit genuine cells. Third-party batteries can work, but iOS may show a message that it cannot verify the part.

Getting more from 3279 mAh

Optimised battery charging, enabled by default, delays charging past 80 percent overnight to reduce wear. Low Power Mode trims background work when you need the phone to last. Bright screens and weak signal are the biggest drains on an iPhone 14, so auto brightness and Wi-Fi at home help more than closing apps.

Buying a used iPhone 14

Many iPhone 14 units are now sold second hand. Ask the seller for a screenshot of the Battery Health page, or check it yourself before paying. A Maximum Capacity of 85 percent or higher means the cell still holds most of its 3279 mAh. Below 80 percent, budget for a replacement, and factor that into the price. A Service message, or a capacity figure that iOS cannot show because the part is unknown, means the battery has been changed with a non-genuine cell.