Apple Watch Battery Life Improvements Coming to Future Models

Apple is reportedly shifting its focus for the future of the Apple Watch, with new rumours suggesting that battery life has become the top priority for the engineering teams in Cupertino (via MacRumors).

Since the launch of the original model over a decade ago, the all-day battery life standard has remained largely fixed at 18 hours. However, internal shifts at Apple suggest that the company is looking to finally break that ceiling to better compete with specialized fitness trackers.

According to industry insiders and recent supply chain reports, Apple is exploring a combination of more efficient hardware and new battery technologies. While the Apple Watch Ultra already offers up to 36 hours of battery with normal use, the goal now appears to be bringing that level of longevity to the standard, more affordable models.

A significant part of this battery-saving strategy involves the transition to more advanced display technologies. There is growing evidence that Apple is working on a new type of low-power LTPO (low-temperature polycrystalline oxide) OLED screen. This technology would allow the watch to manage its refresh rate better.

Furthermore, the upcoming “S” series chips are expected to move to a smaller nanometer process. By shrinking the architecture of the processor, Apple can achieve higher performance with significantly less heat and energy consumption. For users, this means a smoother interface that does not come at the cost of a dead battery by dinner time.

The rumour mill also points toward Apple investigating new battery chemistries or stacked battery designs, similar to those rumoured for the upcoming iPhone 17 and 18 series. These designs allow for a higher energy density, fitting a larger capacity into the same thin chassis.