Features: 3.7V 2000mAh rechargeable lithium polymer battery and battery charger Pure cobalt material ensures long service life and durability High-performance remote control drone battery for extended flight time Provides an excellent alternative power supply for a more enjoyable flying experience Compatible with KY601S, H11D, and H11C RC quadcopters Specifications: Product Name: Drone Battery/Charger Material: Pure Cobalt Size: Approximately 4.8 x 3 x 0.9 cm / 1.88 x 1.18 x 0.35 inches Battery Capacity: 3.7V 2000mAh (battery) or charger (optional) Quantity: 1 piece Note: Suitable for drones with battery size of approximately 4.8 x 3 x 0.9 cm / 1.88 x 1.18 x 0.35 inches and matching interface Allow 1-2 cm variation due to manual measurement; please consider this before ordering Due to monitor differences, the actual color may vary from the image Package Includes: 1 x 3.7V 2000mAh Battery or 1 x Charger (optional)