Battery like 503040 for Anki Cozmo and others. Optimal energy for endless Cozmo fun! Our battery, perfectly tuned for Anki Cozmo and more, enables uninterrupted playtime. With a powerful 620mAh capacity and 3.7V voltage, it guarantees lasting enjoyment of interactive robotics. The high-quality Li-Polymer technology ensures a reliable power source. Whether with the original charger or compatible accessories, the battery is flexibly rechargeable. No worries about energy shortages thanks to the sophisticated overcharge protection. Single-cell and lightweight in black and silver, the battery fits perfectly with your Cozmo. With 2.30Wh nominal energy, it provides hours of playtime. Experience a powerful partnership between technology and entertainment! Bring new energy to your Cozmo adventure with our battery. Play carefree and enjoy an unparalleled connection to your robot friend. Make the most of every interaction with a battery that won’t let you down! Compatible with the following devices: Anki Vector Robot, Anki Cozmo Robot, SkyBell HD WiFi Video Doorbell, Flysight FPV Watch, wireless speakers, and others. Also suitable for other electronic devices with 3.7 - 5V power of 620mAh or max. 2.30Wh. Replaces the following original batteries: 503040. Technical specifications: Chemistry: Li-Polymer, Voltage: 3.7 V, Capacity: 620 mAh, Nominal energy: 2.30 Wh, Dimensions, Weight: approx. 41.9 x 30.1 x 4.9 mm, approx. 15 grams.