Philips HeartStart defibrillator batteries (M5070a) include a 4 year warranty and 5 year shelf life. The battery typically lasts 4 years installed keeping your Philips AED in a "ready to use" condition as well as running mission critical self tests. Using the AED in the course of an emergency rescue or training activity will place a greater drain on the battery and lessen the install life. The Philips HeartStart M5070a defibrillator battery has the capacity to deliver a minimum of 200 shocks or 4 hours of patient monitoring.

How to figure out the expiration date for Philips AED battery M5070a?

Great question and very important. Philips battery M5070a has a 4 year stand-by life (life while installed in the AED and in stand-by mode). The M5070a battery has an "install by date" printed on it. The install date is generally 5 years out from the date of purchase. This means you have a 5 year shelf life (new and uninstalled). So your M5070a battery expected expiration date is 4 years from the date you install your battery as long as you install the battery within the "install by date".