|The 989803136291 Philips HeartStart AED Defibrillator Battery Pack approved for aviation use in HeartStream / HeartStart FR2 and FR2+ AEDs. It’s labeled with the FAA required Technical Service Order (TSO) C-142 designation. This battery pack can be used on Philips defibrillator models labeled M3840A, M3841A, M3860A, and M3861A only. No reprogramming of the device is necessary to use this battery in an aircraft. This battery comes with a 4-year factory warranty provided it is installed by the shelf-life date stated on the battery.