Checking your Apple Watch's battery health is easier than you think

It just takes a couple of clicks and taps.

By Yoni Yardeni Nov. 14, 2026 12:45 pm EST love4aya/Shutterstock Add Engadget on Google: Google Discover

At 50 hours of normal use on a single charge and 84 hours in low power mode, the new Apple Watch Ultra 4's battery life is eye-popping, but nothing lasts forever.

Whether it's an iPhone, iPad or Apple Watch, any device's lithium-ion batteries get weaker as they age. This leads to less time between charging sessions, less overall battery capacity and generally worse performance.