OnSite · Adult · 2-Year Shelf Life
OnSite/Home Adult SMART Pads Cartridge
Philips Part No. M5071A
The adult pads cartridge for the HeartStart OnSite, HS1, and Home. SMART analysis senses when each pad is placed and coaches the rescue step by step.
Genuine Philips Replacement Accessories
Philips HeartStart OnSite & FRx Replacement Pads & Batteries
The Philips HeartStart OnSite (HS1/Home) and HeartStart FRx share one battery, the M5070A, but each takes its own SMART Pads. AED Professionals, an authorized Philips distributor since 2003, stocks every genuine HeartStart replacement with full shelf life remaining and our lowest price guarantee.
Authorized Philips Distributor
Serving Rescuers Since 2003
A+ BBB Rating Since 2007
Lowest Price Guarantee
Real People Answer: 888-541-2337
Genuine Philips HeartStart Replacement Accessories
Factory-sealed genuine Philips equipment, matched to your HeartStart model by part number and shipped with full shelf life remaining.
OnSite · Adult · 2-Year Shelf Life
OnSite · Pediatric · 2-Year Shelf Life
OnSite/Home Infant/Child SMART Pads Cartridge
Philips Part No. M5072A
Pediatric pads cartridge for children under 8 years or 55 pounds, including infants. Automatically reduces defibrillation energy for young patients.
$139View Product →
FRx · Adult & Child · 2-Year Shelf Life
FRx SMART Pads II
Philips Part No. 989803139261
One pad set for every FRx patient: used as-is on adults, and with the FRx Infant/Child Key inserted the same pads treat pediatric patients.
Battery · ~4-Year Installed Life
OnSite/FRx AED Battery
Philips Part No. M5070A
The long-life lithium manganese dioxide battery shared by the OnSite, HS1, Home, and FRx: five-year shelf life before installation, then about four years of standby power.
$249View Product →
FAA Approved
OnSite/FRx Aviation AED Battery
Philips Part No. 989803139301
The aviation-certified version of the HeartStart battery for OnSite and FRx units carried aboard aircraft.
$259View Product →
Bundle · Save On Both
OnSite Pad & Battery Maintenance Package
Philips Part No. MP-HS1-BA
Renew your OnSite, HS1, or Home in one order: an M5070A battery plus adult SMART Pads, with options that add pediatric pads or a second cartridge.
$348View Product →
Bundle · Save On Both
FRx Pad & Battery Maintenance Package
Philips Part No. MP-FRX-BA
Everything the FRx needs in one bundle: an M5070A battery plus SMART Pads II, with a standard option that includes a second pad set.
$274View Product →
HeartStart Pad & Battery Shelf Life At A Glance
Shelf life runs from the date of manufacture, so the expiration or install-by date printed on the packaging always governs. Replace pads immediately after any use.
| Accessory | Philips Part No. | Fits | Patient Type | Shelf Life | Replace When |
|---|---|---|---|---|---|
| Adult SMART Pads Cartridge | M5071A | OnSite / HS1 / Home | Adult | 2 years | Printed expiration passes, or after any rescue use |
| Infant/Child SMART Pads Cartridge | M5072A | OnSite / HS1 / Home | Under 8 yrs / 55 lbs | 2 years | Printed expiration passes, or after any rescue use |
| SMART Pads II | 989803139261 | FRx | Adult; child with Infant/Child Key | 2 years | Printed expiration passes, or after any rescue use |
| M5070A Battery | M5070A | OnSite / HS1 / Home / FRx | — | 5-yr shelf, ~4-yr installed | Unit chirps or status light signals low battery, or after heavy use |
| Aviation Battery | 989803139301 | OnSite / FRx aviation | — | 5-yr shelf, ~4-yr installed | Per aviation program maintenance schedule |
The HeartStart Readiness Timeline
Philips pads and batteries age on different clocks: pads turn over roughly every two years while the battery runs about four. Most owners sync replacements with our maintenance packages and a calendar reminder.
M5070A Battery~4 Years Installed
Five-year shelf life sealed, about four years of standby once installed. The daily self-test protects you, but shortens life in extreme heat.
Adult SMART Pads / SMART Pads II2 Years
Expect two pad replacements per battery cycle. Gel dries over time, which is why the printed date always wins.
Infant/Child SMART Pads (OnSite)2 Years
Sites that protect children should track a second pad expiration alongside the adult cartridge.
How To Replace HeartStart Pads And Battery The Right Way
Both the OnSite and FRx are designed for tool-free maintenance. A full renewal takes about five minutes.
Confirm The Right Parts
The OnSite, HS1, and Home take SMART Pads cartridges (M5071A adult, M5072A infant/child). The FRx takes SMART Pads II. Both models share the M5070A battery.
Swap The Pads
On the OnSite, pull the old cartridge handle and click the new sealed cartridge into the front of the unit. On the FRx, disconnect the old SMART Pads II and connect the new sealed set.
Replace The Battery
Remove the M5070A from the battery well and insert the new one. The unit powers up and runs a self-test automatically; follow any voice prompts.
Verify The Green Ready Light
Confirm the blinking green ready light, log the new expiration dates, and set a reminder about 60 days before the earlier of the two.
Philips HeartStart Pads & Batteries: Frequently Asked Questions
What battery does the Philips HeartStart OnSite and FRx use?
Both models use the same Philips M5070A battery: a disposable, long-life lithium manganese dioxide battery with a five-year shelf life before installation and typically four years of standby power once installed. When the unit chirps or the ready light signals low battery, replace it with a genuine M5070A.
How often do Philips HeartStart pads expire?
Philips SMART Pads carry a two-year shelf life from the date of manufacture, and the expiration date printed on the cartridge or pouch always governs. Like all AED electrodes they are single-use, so replace them immediately after any rescue.
Are OnSite and FRx pads interchangeable?
No. The OnSite, HS1, and Home use snap-in SMART Pads cartridges (M5071A adult, M5072A infant/child), while the FRx uses SMART Pads II. The two systems connect differently and are not interchangeable, even though both devices share the M5070A battery. Check the part number on your current pads before ordering.
How does the FRx treat children without pediatric pads?
The FRx uses one universal SMART Pads II set for every patient. For a child under 8 years or 55 pounds, the rescuer inserts the FRx Infant/Child Key and the device automatically reduces its energy and adjusts its instructions, so there is no separate pediatric pad inventory to manage.
How do I know when my HeartStart battery is low?
HeartStart AEDs run automatic self-tests and warn you well in advance: the unit emits a chirping alert and the ready light changes from its normal blinking green. Replace the M5070A promptly when warned, and log the swap in your maintenance record.
Are your Philips pads and batteries genuine?
Yes. AED Professionals is an authorized Philips distributor, and every SMART Pads cartridge and M5070A battery we ship is factory-sealed genuine Philips equipment with full shelf life remaining, backed by our lowest price guarantee and a real support team at 888-541-2337.
Not Sure Which HeartStart Accessories You Need?
Send us a photo of your device or the part number on your current pads and battery, and our team will match the exact genuine replacements. Saving lives is our only business.
