Echo Dot Battery Charger, ZeroLemon 10000mAh Battery Charging Base Rechargeable Battery Case for &ldquo;2nd Generation Echo Dot&rdquo; &ndash; White Powerful 10000mAh Capacity: The powerful 10000mAh Li-polymer battery charging base keeps your Echo Dot working max up to 10-15 hours. Easy Connection & Charge: Just connect the battery charging base with the provided charging cable and your Echo Dot will be powered up. Two Way Charging Modes: The charging base can be used as a 10000mAh power bank when it is not in use. Intelligent Charging Technology: Intelligent battery management system ensures charging with entire safety and 4 LED Lights indicate battery levels. ZeroLemon Promise and Guarantee: 365 days ZeroLemon Guarantee Warranty with Amazon 30 days Full Refund Guarantee; Lifetime ZeroLemon Customer Service Support.