What are the detailed battery specs (capacity, cycle life, safety)? Maxis Electric: 2200mAh. Maxis Airflow: 3000mAh (same as Omni Pro). USB-C, 5V/2A input; about 3.5 hours from 10% to full for Maxis Electric, about 4.4 hours for Maxis Airflow. Retains over 70% capacity after 800 charge cycles. UL 62133 certified with overcharge, over-discharge, short-circuit, and overheat protection. The battery powers the lumbar motor and OmniStretch (on Maxis Airflow, the Active Airflow fan as well). Maxis Manual is non-electric and needs no battery. Back to FAQs List