Keep USB-powered equipment available away from wall power with 21,000 mAh of stored battery capacity and up to 100 W of charging output. This capacity class provides a practical portable reserve for mobile workstations, tablets, phones and accessories used across a workday. The gray finish gives the unit a neutral appearance for personal carry, meeting rooms and mobile technology kits. The ALOGIC R21KWCPB100WGR belongs where a compact charging source is needed between fixed charging locations. Carry it in a laptop bag for travel days, place it with field-service equipment, or keep it available as a shared battery for meeting-room peripherals and mobile devices. Its 100 W output rating makes it relevant for equipment with higher charging-power requirements than a basic phone-focused battery can support. Within the Roam range, this configuration combines a 21,000 mAh battery capacity with a 100 W output rating. That pairing prioritizes both stored energy and higher-power charging in one portable unit rather than limiting the battery to low-power accessories alone. Match the power bank to the charging input requirements of the devices that will connect to it, particularly when supporting notebooks and other equipment that benefits from higher available wattage.