AED batteries are the silent failure mode of cardiac response. Pads have a visible expiration date and a tactile package; batteries sit sealed inside the device, invisible, until the daily self-test flips the readiness indicator from green to red. A Journal of the American Heart Association field analysis estimated that battery problems are among the leading causes of AED non-readiness at the moment of a cardiac event, most often because the owner didn’t budget for or schedule replacement.
This guide is the complete 2026 cost reference for AED replacement batteries across every major brand. Use it to budget annual or biennial battery spend, validate quotes, and avoid the silent failure mode that converts a $1,500 device into a paperweight.
How AED batteries actually work
Every FDA-cleared AED sold in the United States uses a sealed, non-rechargeable lithium battery. The chemistry varies by manufacturer:
- Lithium manganese dioxide (Li/MnO₂) — most common in modern AEDs (Philips HeartStart, ZOLL AED 3). Stable shelf life, strong cold-temperature performance.
- Lithium thionyl chloride (Li-SOCl₂) — used in some long-life applications (Defibtech 7-year battery). Highest energy density.
- Lithium CR123A primary cells — ZOLL AED Plus uses 10 standard CR123A lithium photo-camera batteries in a sealed pack. Counterintuitive but engineered for very long standby life.
All three chemistries are non-rechargeable for one reason: emergency readiness. A rechargeable battery that self-discharges over weeks or months would fail at the moment of need. Sealed primary chemistries hold their charge for 2–7 years at low self-discharge rates and trigger an alert long before failure.
The 2026 brand-by-brand battery price sheet
| Brand & Model | Battery part # | Install-by life | Battery price | Cost per year |
|---|---|---|---|---|
| Philips HeartStart OnSite / Home | M5070A | 4 years | $169–$185 | ~$44/yr |
| Philips HeartStart FRx | 989803139301 | 4 years | $189–$209 | ~$50/yr |
| Philips FR3 (clinical) | 989803150161 | 5 years | $295–$345 | ~$64/yr |
| ZOLL AED Plus (10× CR123A pack) | 8000-0860-01 | 5 years standby | $89–$109 | ~$20/yr |
| ZOLL AED 3 | 8000-000696-01 | 5 years | $245–$275 | ~$52/yr |
| Defibtech Lifeline 5-year | DCF-200 / DBP-1400 | 5 years | $229–$269 | ~$50/yr |
| Defibtech Lifeline 7-year | DBP-2800 | 7 years standby | $329–$369 | ~$50/yr |
| HeartSine samaritan PAD-PAK (combined pads + battery) | PAD-PAK-01 | 4 years | $145–$169 (combo) | ~$39/yr combo |
| Cardiac Science Powerheart G3 | 9146-302 | 4 years standby | $255–$289 | ~$66/yr |
| Cardiac Science Powerheart G5 | 9145-001 | 4 years | $265–$299 | ~$68/yr |
| Physio-Control LIFEPAK CR2 | 11141-000165 | 4 years | $289–$325 | ~$76/yr |
| Physio-Control LIFEPAK 1000 | 11141-000100 | 5 years | $365–$415 | ~$78/yr |
Pricing reflects 2024–2025 published MSRP and major-reseller retail ranges. Aviation-rated and specialty batteries (TSO-C142 for aircraft) typically cost 20–40% more. Confirm pricing with AED Leader or manufacturer-authorized resellers.
The ZOLL CR123A exception
The ZOLL AED Plus battery price is roughly half of every other brand — and there’s a structural reason. ZOLL designed the AED Plus around 10 standard CR123A primary cells (the same batteries used in flashlights and tactical cameras) instead of a proprietary battery pack. The benefits cascade:
- Lower per-cell cost (commodity supply chain)
- No proprietary licensing markup
- 5-year standby life similar to proprietary packs
Over 8 years of ownership (one battery replacement), a ZOLL AED Plus owner spends about $90 on batteries, while a Philips HeartStart OnSite owner spends $170+. That gap funds about half of one extra pad replacement.
8-year battery replacement projection (per device)
| Brand | Replacements over 8 yrs | Per battery | 8-year battery spend |
|---|---|---|---|
| Philips HeartStart OnSite (4-yr) | 2 | $169 | $338 |
| Philips HeartStart FRx (4-yr) | 2 | $189 | $378 |
| ZOLL AED Plus (5-yr) | 1 | $95 | $95 |
| ZOLL AED 3 (5-yr) | 1 | $245 | $245 |
| Defibtech Lifeline 5-yr | 1 | $249 | $249 |
| Defibtech Lifeline 7-yr | 1 | $329 | $329 |
| HeartSine PAD-PAK (4-yr combined) | 2 sets (incl. pads) | $159 | $318 combo |
| Cardiac Science Powerheart G5 | 2 | $275 | $550 |
| LIFEPAK CR2 | 2 | $295 | $590 |
Across an 8-year lifecycle, battery spend ranges from $95 (ZOLL AED Plus) to $590 (LIFEPAK CR2) per device — a 6× spread. For a 20-AED fleet, the difference is ~$10,000.
Hidden cost: lithium battery disposal & shipping
Three small line items most buyers miss:
1. Hazardous-materials shipping
Sealed lithium batteries are classified as Class 9 Dangerous Goods for air transport. Some manufacturers ship by ground only (longer lead time); others use special hazmat air freight surcharges of $15–$45 per shipment.
2. Mail-back recycling
EPA classifies expired AED batteries as hazardous waste. Most facilities cannot drop them in standard recycling. Philips, ZOLL, and Defibtech offer free mail-back recycling programs (manufacturer pays return shipping). HeartSine and Cardiac Science vary; check with the seller.
3. Cold-chain shelf-life impact
Batteries stored above 80°F or below 35°F lose 10–20% of stated shelf life. Outdoor AED cabinets without heaters in cold climates accelerate battery depletion — schedule earlier replacement when deployed outdoors.
Aviation & specialty batteries
AEDs deployed on aircraft or in aviation environments require TSO-C142-certified batteries. The certification process adds 20–40% to battery cost:
- Philips FRx Aviation Battery (TSO C-142) — premium pricing
- Defibtech Aviation Battery — premium pricing
If your AED is deployed in a corporate jet, helicopter, or commercial aviation context, factor the certification premium into your budget. For ground deployments, standard batteries are appropriate.
The “compatible” / aftermarket battery question
You will find third-party “compatible” AED batteries on marketplace sites for 40–60% below OEM prices. They are not FDA-cleared. Three reasons to avoid them:
- FDA classification. AED batteries are Class III medical devices. Only OEM and FDA-licensed equivalents are legal to sell for therapeutic use.
- Warranty void. Installing a non-OEM battery voids the AED’s manufacturer warranty.
- Liability exposure. If the AED fails to deliver a shock and a non-OEM battery is found inside, your organization faces direct liability.
When to schedule replacement (real-world timing)
| Scenario | Best timing |
|---|---|
| Indoor, climate-controlled deployment | Replace at the manufacturer’s install-by date |
| Outdoor heated cabinet | Replace at the manufacturer’s install-by date |
| Outdoor unheated cabinet, cold climate | Replace at 75% of stated life |
| Daily self-test indicator flags red | Replace within 7 days |
| Battery recall or manufacturer advisory | Replace per advisory deadline |
| Device deployed (used in an event) | Replace immediately |
Frequently Asked Questions
How much does an AED battery cost in 2026?
Between $89 and $415, depending on brand. The ZOLL AED Plus (CR123A pack) is the most affordable at ~$95; the LIFEPAK 1000 is the most expensive at ~$400. Most consumer-grade AED batteries fall in the $170–$300 range.
How long do AED batteries last?
4 years for most consumer AEDs (Philips, Cardiac Science, HeartSine, LIFEPAK CR2). 5 years for ZOLL, Defibtech standard, and clinical LIFEPAK 1000. 7 years for the Defibtech high-capacity DBP-2800.
Are AED batteries rechargeable?
No. All FDA-cleared AEDs sold in the United States use sealed, non-rechargeable lithium batteries to guarantee shelf stability and emergency readiness. A rechargeable battery would risk self-discharge between maintenance cycles.
Why are ZOLL AED Plus batteries so much cheaper than other brands?
ZOLL designed the AED Plus around 10 standard CR123A primary lithium cells in a sealed pack, rather than a proprietary battery. This leverages commodity battery supply chains and avoids proprietary licensing markups while still delivering 5-year standby life.
Can I use a third-party “compatible” battery in my AED?
No. AED batteries are FDA Class III medical devices, and only OEM or FDA-licensed equivalents are legal for therapeutic use. Non-OEM batteries void the device warranty and create direct liability exposure if the AED fails to deliver therapy.
How do I dispose of an expired AED battery?
Sealed lithium AED batteries are EPA-classified hazardous waste and cannot go in standard recycling. Philips, ZOLL, and Defibtech offer free mail-back recycling programs. Otherwise, take to a certified e-waste facility — never to a landfill.
Does cold weather shorten AED battery life?
Yes. Lithium battery chemistry degrades faster at sustained temperatures below 32°F or above 80°F. For unheated outdoor deployments in cold climates, plan replacement at 75% of stated install-by life.
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Sources & References
- FDA — Automated External Defibrillators
- Journal of the American Heart Association — AED Readiness in Public Access
- FAA — Lithium Battery Shipping (Class 9 Dangerous Goods)
- EPA — Hazardous Waste Categories (Lithium Battery Disposal)
- Manufacturer battery specifications: Philips, ZOLL, Defibtech, HeartSine, Cardiac Science, Physio-Control
Disclaimer: Pricing is informational and represents 2024–2025 MSRP/retail ranges. AED batteries are FDA Class III medical devices and require purchase through licensed channels. Always replace with manufacturer-authorized OEM batteries.
