The MDPro microcap_battery is a high-capacity, rechargeable lithium-ion power source designed specifically for the MicroCap 9 handheld capnograph and oximeter. It provides consistent 3.6V power to support continuous bedside or mobile monitoring of EtCO2, SpO2, and respiratory rates. This medical-grade battery is engineered for reliability, allowing for up to 10 hours of continuous operational use on a single charge. Its high energy density and lightweight design ensure the MicroCap 9 remains a truly portable solution for emergency medical services and intensive care environments.