Defibtech 9V Battery

The Defibtech 9V Battery is the small genuine lithium cell that powers the active status indicator on the Lifeline AED. Inserted into the main battery pack, it has a 1-year expected life once installed and ensures the unit's readiness display stays lit and visible — even when the AED is sitting unused for months.

Key Features

• Genuine Defibtech lithium 9V — required for proper status indicator function.
• Powers the active readiness indicator — keeps the green/red status visible at a glance.
• 1-year expected life once installed.
• TGA-compliant.

Specifications

• Type: Lithium 9V primary cell
• Compatible with: Defibtech Lifeline AED battery pack
• Expected life: 1 year from installation

Why this is critical

The status indicator is the at-a-glance signal that your AED is ready when needed. A flat status indicator battery doesn't disable the AED itself — but it does mean you've lost the visible-from-across-the-room confirmation that the unit is operational. Replace this 9V annually as part of your AED maintenance schedule, alongside any pad or main-battery checks.

Frequently Asked Questions

Does the AED still work if this 9V is flat?
Yes — the main battery pack runs the AED itself. The 9V powers only the status indicator. But a flat indicator battery means you can't tell at a glance whether the AED is ready, which defeats the point of an active readiness display.

Can I use a hardware-store 9V?
Use only genuine Defibtech 9V batteries. Third-party cells may have different voltage characteristics that affect the indicator circuit and can void your AED warranty.

How do I replace it?
Follow the procedure in your Lifeline AED user manual — typically requires opening the battery pack housing. Check the user manual or contact us for guidance if unsure.