The Philips Healthcare 989803108831, M3864A, FR2+ Training & Admin Battery Pack is a high-quality medical battery designed for use in various Philips devices such as the HeartStart FR2 and M3860A. With a voltage of 12V and an amp hours of 4200mAh, this battery pack has a manufacturer warranty of 3 years and an expiration date of 2030-12. It is rechargeable and has a chemical composition of Limno2, making it a reliable power source for medical equipment. The battery pack is compact in size, measuring 172*36*66MM, and comes in a unit quantity of 1.