Cardiac Science Powerheart G3 Battery Specifications & Part Numbers

Cardiac Science has updated its part numbering across several generations of the yellow Intellisense battery. The table below outlines cross-compatibility and technical specifications:

Attribute	Specification Details
Primary Part Numbers	9146-302, 9146-ABE
Legacy Part Numbers Replaced	9146-002, 9146-102, 9146-202
AED Model Compatibility	Powerheart G3 (9300A, 9300E, 9390A, 9390E)
Chemistry & Voltage	Lithium Sulfur Dioxide (Li-SO2) / 12V DC
Operational Standby Life	4 Years Full Operational Replacement Warranty from Date of Installation
Shock Capacity	Up to 290 full-discharge shocks

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How the Intellisense® Battery System Works

Unlike standard passive batteries, the Powerheart G3 battery pack acts as an active data drive for the AED. An integrated microchip records:

• Total operating time and cumulative battery capacity consumed.
• Self-test diagnostics performed (daily, weekly, and monthly).
• Remaining standby life and internal temperature history.

Every 24 hours, the AED executes a deep system check. The device powers on its internal circuitry, measures the battery’s internal resistance under load, and verifies that enough energy remains to charge the internal capacitors to full therapeutic levels.

🛒 Direct Replacement Link:
➡️ Buy the Powerheart AED G3 Battery Replacement (9146-302 / 9146-ABE) Here »

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The Hidden Risks of Cheap Aftermarket Knockoffs

Online marketplaces are flooded with uncertified third-party clone batteries. While attractive on price, unverified aftermarket packs pose severe operational risks:

• Inaccurate Voltage Reporting: Inferior chips often fail to communicate properly with the G3 processor, displaying a green “Rescue Ready” status even when internal cell voltage has dropped below operating minimums.
• Regulatory & Legal Liability: OSHA workplace guidelines and public access defibrillation (PAD) statutes require medical devices to meet strict maintenance standards. Deploying non-cleared power supplies can expose facilities to liability in the event of an AED failure during cardiac arrest.
• Premature Degradation: Substandard lithium cells discharge prematurely in extreme ambient temperatures, triggering sudden beeping and red indicator lights.

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Installation, Expiration, and Warranty Tracking

Proper recordkeeping ensures your Powerheart G3 remains compliant with safety audits:

1. Check the “Manufactured On” Date: The date printed on the battery label indicates when the cells were assembled. The battery must be installed within 5 years of this date.
2. Track the 4-Year In-Service Window: The 4-year operational standby guarantee begins on the exact date of insertion into the AED. Write the installation date on the label with a permanent marker.
3. Listen for the Self-Test Prompt: When sliding the battery into the base of the unit, listen for the automatic self-test cycle. The unit will verify circuit continuity and flash the status indicator green.

⚡ Need replacement pads as well? Check our complete breakdown on adult vs. pediatric electrode options: Powerheart G3 Pads Guide (9131-001 vs. 9730-002) »

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Frequently Asked Questions (FAQ)

Q: What does it mean when the Powerheart G3 beeps and shows a red status indicator?
A: A red status indicator and periodic beeping indicate a failed self-test. Open the lid of the AED; the automated voice prompt will state the failure cause (typically “Battery Low” or “Check Pads”). If the battery is low, replace it with part 9146-302 immediately.

Q: Is the 9146-302 battery rechargeable?
A: No. The Powerheart G3 Intellisense battery is a disposable, primary Lithium Sulfur Dioxide pack. It cannot be recharged and must be replaced once depleted.

Q: Are older part numbers like 9146-102 and 9146-202 still usable?
A: Those part numbers represent older manufacturing revisions. Part number 9146-302 (and compatible 9146-ABE replacement packs) is the direct, updated replacement for all 9146 series batteries.