Philips HeartStart OnSite Battery Item #M5070A (989803121381)
The Philips HeartStart OnSite Replacement Battery comes with a five-year shelf life plus a (typical) four-year installed life. A spare battery should be stored with the defibrillator in case of an emergency. Additional batteries should be purchased for Philips HeartStart OnSite defibrillators that are used frequently for training and/or demonstrations.
Since Onsite AED uses disposable, lithium manganese dioxide battery, it is suggested you arrange to dispose off OnSite Battery in an eco-friendly manner following local and state regulations.