Philips HeartStart Defibrillator Battery Solutions
Keep your AED and defibrillator-monitor systems ready with exact-fit Philips HeartStart replacement batteries. Our range covers HeartStart Home, OnSite, FRx, HS1, FR2, FR2+, MRx, XL/XL+, and Efficia DFM100, with model-specific part numbers, smart battery communication where applicable, fresh stock, and a 1-year warranty.
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Match your HeartStart model in 30 seconds
What Is a Philips HeartStart Defibrillator Battery?
Unlike a phone battery, an AED battery is a single-use lithium-manganese dioxide (Li-MnO2) primary cell. It sits in standby for years, powering the device's self-tests — then must deliver full discharge current the moment a rescue begins.
Standby Monitoring
Installed in the AED, the battery keeps the device in a constant state of readiness. The HeartStart runs automatic self-tests that draw tiny amounts of current day and night — which is exactly why the battery has a finite 4-year standby life even if never used in a rescue.
Charge & Shock Delivery
When the AED is used, the battery charges the defibrillator capacitor in seconds and delivers a biphasic shock. The M5070A is rated for 200 shocks or 4 hours of continuous monitoring — whichever comes first.
Expiry & Replacement
Every HeartStart battery carries an install-by date on its label. Philips requires replacement at that date regardless of use — an expired battery cannot guarantee a rescue. Swap it, log the new install date, and the AED returns to full readiness.
Philips HeartStart Battery Models — Which One Fits Your AED?
Six battery families cover the Philips HeartStart and related defibrillator-monitor range. Match your AED model below — all prices verified from our live store.
M5070A
- 4-year standby life from install date
- 200-shock / 4-hour monitoring capacity
- Li-MnO2 primary cell
- Latest 2026 production batch
M3863A
- 12V 4200mAh Li-MnO2 chemistry
- Genuine brand-new replacement
- Fits all four FR2 part numbers
- Single battery included
M3538A
- Rechargeable replacement pack
- Model-specific fit for MRx
- Compatible part numbers listed above
- Designed for repeated professional use
REF 989803167281
- Rechargeable monitor-defibrillator pack
- Model-specific replacement
- For professional medical environments
- Confirm REF before ordering
REF 989803190371
- 5000mAh rechargeable pack
- Designed for monitor-defibrillator use
- Model-specific replacement
- Confirm REF before ordering
989803206871
- 14.4V rechargeable Li-ion pack
- Grade-A cells to OEM standards
- For compatible Philips defibrillator systems
- Backup or replacement power
How to Choose the Right HeartStart Battery
Defibrillator batteries are strictly model-specific — the wrong battery won't seat, and an expired one can't rescue. Two checks get it right every time.
| Your AED Model | Battery Part Number | Chemistry / Spec | Our Price |
|---|---|---|---|
| HeartStart OnSite / Home (HS1) | M5070A (also M5067A, M5066A) | Li-MnO2 · 4-year standby · 200 shocks | $119.00 (was $169.00) |
| HeartStart FRx | M5070A | Li-MnO2 · 4-year standby · 200 shocks | $119.00 (was $169.00) |
| HeartStart FR2 / FR2 Plus | M3863A (also M3860A, M3840A, M3841A) | Li-MnO2 · 12V · 4200mAh · rechargeable | $219.99 (was $369.00) |
| HeartStart MRx | M3538A (also M3535A, M3536A) | Rechargeable | $299.99 |
| HeartStart XL / XL+ | REF 989803167281 | Rechargeable monitor-defibrillator pack | $369.99 |
| Efficia DFM100 | REF 989803190371 (4ICR19/66-2) | Rechargeable · 5000mAh | $339.99 |
| Compatible professional Philips defibrillator systems | 989803206871 (453564982851) | Li-Ion · 14.4V · rechargeable | $489.00 |
Check 1 — Read the AED Model
- Model name or REF is printed on the device label (OnSite, Home, FRx, FR2, MRx, XL+, DFM100)
- OnSite and Home share the HS1 platform — both take M5070A
- FRx takes M5070A; FR2/FR2 Plus takes M3863A
- MRx, XL/XL+, and DFM100 require their own model-specific packs
- Unsure? Message us on WhatsApp with a photo of your AED and old battery
Check 2 — Read the Old Battery Label
- Remove the old battery and read its part number or REF number
- Check the install-by date or battery condition before use
- Confirm whether your unit uses a primary or rechargeable pack
- Match the part number to the listing title before ordering
Primary vs. Rechargeable Philips Defibrillator Batteries
Different HeartStart families use different battery designs. Match the exact model and part number before ordering.
Public-Access AEDs
HeartStart Home, OnSite, FRx, and HS1 use primary, non-rechargeable batteries designed for long standby operation and automatic self-tests.
Professional & EMS Units
FR2/FR2+, MRx, XL/XL+, and Efficia DFM100 use rechargeable packs for repeated professional use and charging between operations.
Smart Battery Communication
Compatible smart battery packs can report charge information to the device's self-test system, helping reduce false low-battery warnings or compatibility errors.
Where Philips HeartStart Batteries Are Used
Choose the battery family that matches your Philips emergency or monitoring equipment.
Home, OnSite, FRx & HS1
- Homes and offices
- Gyms and schools
- Public-access AED programs
- Long-term standby readiness
FR2 & FR2+
- First-responder equipment
- Ambulance and EMS use
- Professional emergency response
- Rechargeable battery system
MRx & XL / XL+
- Hospital code carts
- In-facility resuscitation
- Monitor-defibrillator systems
- Professional clinical environments
Efficia DFM100
- Combined patient monitoring
- Defibrillation support
- Professional medical use
- Model-specific rechargeable pack
Why Choose Accessories-Mall for Philips Medical Batteries?
Focused on exact fit, reliable battery performance, and clear replacement guidance.
Medical-Grade Cells
Battery packs are built with the cell chemistry specified for the compatible product family, supporting stable voltage and predictable discharge.
Exact Model Matching
Each listing identifies compatible models and replacement part numbers so you can check the old battery before ordering.
ISO-Certified Manufacturing
The supplied manufacturing information states ISO-9001 and ISO-13485 certification, with testing to CE, RoHS, and UL standards.
1-Year Warranty
Manufacturing defects under normal use are covered for 12 months from receipt.
Fast Processing
Orders are stated to ship within 1–2 business days, subject to stock and applicable battery transport requirements.
Compatibility Support
If you are unsure, use the product support channel with a photo of your device and existing battery for model confirmation.
Key Features of Our HeartStart Batteries
Core specifications and service features that help keep your equipment rescue-ready.
4-Year Standby Life
M5070A batteries are rated for 4 years from install — the same specification Philips requires for AED readiness.
200-Shock Capacity
Rated for 200 shocks or 4 hours of continuous monitoring — full performance for a worst-case rescue.
Li-MnO2 Chemistry
Lithium-manganese dioxide primary cells — the exact chemistry Philips specifies, with zero self-maintenance.
Genuine Replacement
Genuine Philips part numbers — M5070A, M3863A, M3840A — not generic substitutes.
Fresh 2026 Stock
Latest production batch — your 4-year standby clock starts when you install, not years earlier.
1-Year Warranty
Manufacturing defects under normal use are covered for 12 months from receipt.
Philips HeartStart Battery Price Guide
What HeartStart batteries cost — our verified prices versus typical hospital and manufacturer list pricing.
| Battery | Fits | Typical List Price | Our Price | You Save |
|---|---|---|---|---|
| M5070A | OnSite / Home / FRx / HS1 | $169.00 | $119.00 | $50 (30%) |
| M3863A | FR2 / FR2 Plus | $369.00 | $219.99 | $149 (40%) |
| M3538A | MRx | — | $299.99 | — |
| 989803167281 | XL / XL+ | — | $369.99 | — |
| 989803190371 | Efficia DFM100 | — | $339.99 | — |
| 989803206871 | Professional defibrillator systems | — | $489.00 | — |
List prices from product-page compare-at data (August 2026). Our prices verified from live product pages.
HeartStart Battery Care & Replacement Schedule
When to replace, how to store a spare, and how to log the swap — a 5-point maintenance routine.
Replace When (any one applies)
- Install-by date on the battery label has passed
- AED reports a low-battery warning or failed self-test
- Battery has delivered a shock or prolonged monitoring run
- Battery shows physical damage, swelling, or leakage
- You cannot verify the install date — replace on principle
Spare Storage & Logging
- Store the spare in its original packaging at 15–25°C, dry
- Keep the spare with the AED, not in a drawer elsewhere
- Write the install date on the new battery label
- Log the swap date in your AED maintenance record
- Dispose of the expired battery per local battery regulations
Read: The Critical Importance of Dependable Batteries in AEDs →
Frequently Asked Questions About Philips HeartStart Defibrillator Batteries
No. These professional Philips systems use different model-specific battery packs. MRx uses M3538A, XL/XL+ uses REF 989803167281, and Efficia DFM100 uses REF 989803190371 (4ICR19/66-2). Always match the exact REF or part number on your existing battery.
No. The 4-year standby guidance in this page applies to the M5070A primary battery family. Rechargeable packs for professional monitor-defibrillators follow their own charging, service, and replacement requirements. Check the specific product listing and device manual.
No. Philips battery families are model-specific. Do not substitute a different battery type or force a battery into a compartment. Confirm the device model and exact part number first.
OnSite (HS1), Home, and FRx take the M5070A ($119.00). FR2 and FR2 Plus take the M3863A ($219.99). Professional defibrillator systems use the 989803206871 14.4V lithium pack ($489.00). Check your AED's model name on its front label, then match the part number in the table above.
The M5070A has a 4-year standby life from its install date, or 200 shocks / 4 hours of monitoring — whichever comes first. Li-MnO2 primary cells drain slowly through the AED's automatic self-tests, so the install-by date applies even if the AED was never used in a rescue.
Replace when any of these applies: the install-by date has passed, the AED shows a low-battery warning or failed self-test, the battery has delivered a shock or a prolonged monitoring run, or the battery shows damage/swelling. If you can't verify the install date, replace it — an AED with an unknown battery age is not rescue-ready.
$119.00 for the M5070A (list $169.00), $219.99 for the M3863A (list $369.00), and $489.00 for the 989803206871 professional pack. That's 30–40% below typical list pricing for the same genuine part numbers.
The M5070A and M3863A listings are genuine replacement batteries with the exact Philips part numbers (including M5067A, M5066A, M3860A, M3840A, M3841A variants). The 989803206871 is a genuine PHILIPS-branded 14.4V lithium pack built with Grade-A cells to OEM standards.
HeartStart batteries are model-specific: the M5070A and M3863A have different form factors and will not seat in the wrong AED. Forcing a battery in can damage the compartment — always match the part number first. If you're unsure, send us a photo of your AED and old battery on WhatsApp and we'll confirm.
Open the battery compartment (on the back of the FRx/OnSite, or the side of the FR2), remove the old battery, insert the new one until it clicks, and confirm the AED runs its startup self-test with a "ready" indicator. Write the new install date on the label and log it in your maintenance record.
Keep the spare in its original packaging at 15–25°C in a dry place, ideally stored with the AED itself. Note that the standby clock on Li-MnO2 primary cells is driven by chemistry, not just use — so don't stockpile spares for years; order fresh batches when the install-by date approaches.
Yes — free standard shipping to the US, UK, Canada, and Australia. Orders placed Monday–Friday are processed within 1–2 business days. US-stock orders arrive in 2–7 business days; international orders in 7–15 business days; Europe 10–18 business days. Note that lithium battery shipments may be subject to transport regulations.
Warranty: 1-year limited warranty covering manufacturing defects under normal use. Returns: 30 days from delivery for unused items in original packaging; defective or wrong items reported within 72 hours ship free. Refund policy · Product warranty
Defibrillator Battery Guides & Resources
Helpful guides on battery selection, replacement timing, and medical-device power.
