The low maintenance Philips HeartStart OnSite/FRx battery has a 5 year shelf life (outside of the AED) and 4 Year Gaurantee (stand by mode inside the AED) from Philips Healthcare. This battery was specifically designed for the the Philips HeartStart OnSite, as well as the Philips HeartStart FRx AEDs. Philips recommends to alway have a fully charged spare battery stored with the AED.*Due to aviation regulations, there is no express shipping on this battery.
Manufacturer Part #M5070A