Apple Watch Series 4th 44mm Battery

Description

🔋 Battery Type

• Built-in rechargeable lithium-ion battery — non-removable and integrated into the watch body. Charging is done wirelessly using Apple’s magnetic charging cable or dock.

📊 Battery Capacity (44 mm Model)

• The 44 mm Apple Watch Series 4 battery has a capacity of approximately 291.8 mAh, which is about 1.11 Watt-hours (Wh) at 3.81 V.

• This capacity is slightly smaller compared to the previous Series 3 42 mm model (which had ~1.34 Wh). Despite smaller capacity, Apple maintained similar everyday battery life by improving power efficiency.

🕐 Battery Life

• Rated for up to ~18 hours of normal mixed use on a full charge — meaning a typical day’s worth of notifications, activity tracking, heart-rate monitoring, etc., should last about one full day before needing a recharge.

⚡ Charging

• Wireless magnetic charging — just align the watch on the magnetic charger.