Kastar S330-D 4-Pack 10500mAh (38.85Wh) USB-C Rechargeable Battery for eufy S230 S231 S330 E330 Smart Lock, Smart Drop & T8520 — LED Indicator Lights

Replacement power pack designed for eufy S230, S231, S330, E330 Smart Lock, Smart Drop and T8520 — sold as a 4-pack. Each Kastar S330-D cell includes a built-in USB-C port for direct charging, eliminating the need for an external charger, and features LED indicator lights that display remaining charge at a glance. Technical specifications: Battery Type: Lithium-ion; Battery Voltage: 3.7V; Battery Capacity: 10500mAh / 38.85Wh. Multiple internal safety protections guard against overcharging, over-discharging, overheating, and short circuits to ensure reliable operation. Compared with inexpensive alternatives, these batteries deliver longer runtime and improved durability, offering professional-level power and value. Package includes: 4-Pack Batteries.