This is a replacement battery for the Philips M5070A. (Not OEM) For use in Philips Onsite and FRx Model defibrillators. Meets FDA standards and is (510K) certified for use in the Philips FRx and Onsite AED's This battery is a disposable, lithium manganese dioxide, long-life battery that will typically last for four years with the defibrillator in standby, Battery Type Lithium Minimum Shelf Life Typically 4 years from date of manufacturing Factory Warranty Made in the USA  If you want an orginal OEM, order the http://www.