This kit includes (1) set of replacement Physio-Control brand Quick-Pak pacing/defibrillation/ECG electrodes and (1) Charge Pak for the Lifepak CR+. The Lifepak CR+ requires BOTH the electrodes and battery be replaced after each use, or prior to expiration. The convenience of switching both pads and battery out at the same time is much more efficient than other units that require replacements at separate times. This kit also comes with replacement instructions and a battery discharger so you can safely dispose of Charge-Pak after the battery is drained.

It is recommended to always keep one extra set of electrodes.  You can save by purchasing the LifePak Charge-Pak with (2) sets of electrodes (11403-000001) here.