Product Features:5 Year LifespanDisposable lithium ion batterySelf TestingShelf Life of 24-36 Months - Built to last! The CU Medical iPAD NFK200 Disposable Li-ion Battery is an essential component for your Semi-Automatic defibrillator device. With a lifespan of 5 years, the battery provides a minimum of 200 shocks (150 joules) and will carry out daily, weekly and monthly self tests to ensure that it is always rescue ready. Designed for use exclusively with the I-PAD NFK200 defibrillator, the battery can be easily replaced with a simple click and replace procedure. Don't let yourself get caught off guard in a life or death situation - make sure your CU medical device is always rescue ready by keeping your battery well maintained.