10,000 mAh 容量可搭配每一項先進功能。為您的 eufyCam S4、eufy Security S330 3合1 影像智慧鎖、智慧鎖 Touch & Wi-Fi（黑色/銀色，型號 T8520）以及 SmartDrop 智慧快遞箱，取得第二個可充電電池組。快速釋放電池組：您無需將智慧鎖從門上取下即可為電池充電。可充電：為您省錢，並享受一次性電池從未提供的便利。
Swapped it into the S330 when the first pack dipped below 20% and it charged right back up overnight. Having a spare 10,000 mAh means I never worry about losing video coverage mid-week. Battery life easily matches what the doorbell promised.
The 10,000 mAh capacity is no joke—I charged it once, popped it into my smart lock, and the battery level barely dropped after two weeks of heavy use. Swapping it in took less than a minute, and I love having a spare ready so I never get locked out.
Swapped this in when the original pack dropped to 20%, and the 10,000 mAh capacity gave me a full two weeks of doorbell and lock use before I even thought about recharging. It clicks in snug and holds the charge well, so no more juggling cables mid-week.