The Power Sonic PS-1223 is a fully compatible Philips Medical Systems Heartstart XL Defibrillator M4735A. This Sealed Lead Acid battery has a nominal voltage of 12.0V and a rated capacity of 2.3Ah. Replaces OEM Part M3516A.

Phillips HeartStart XL Battery Replacement:
Terminal: Pressure Contacts
Voltage: 12.0
Capacity: 2.3 AH
Length: 7.17" in.
Width: 0.94" in.
Height: 2.40" in.
Warranty: 1 Year
Weight: 1.7 lbs

“Float” or “Stand-By” Service: Hold battery across constant voltage source of 13.5 to 13.8 volts continuously. When held at this voltage, the battery will seek its own current level and maintain itself in a fully charged condition.

Note: Due to the self-discharge characteristics of the PS-1223 battery, it is imperative that they be charged within 6 months of storage, otherwise permanent loss of capacity might occur as a result of sulfation.

Do you have a question? You can contact us online or toll-free at 1-877-775-4381 to talk to a battery specialist today.