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Black rectangular lithium-ion battery pack with label showing 12V 4.2Ah M3863A

E-buy

E-buy M3863A 12V 4.2Ah Li-ion laptop battery

SKU CH-JTG4-RJNNR MPN M3863A

12 V 4.2 Ah lithium-ion replacement battery keeps Philips FR2 Heartstart AED defibrillators emergency-ready, compatible with M3860A, M3861A and M3840A models

  • Battery TypeLithium-Ion
  • 12V 4.2Ah Li-ion capacity powers Philips FR2 AED reliably
  • 4Wh energy rating supports extended emergency readiness
  • Direct replacement for M3860A M3861A M3840A models fits without modification
  • Premium Chinese-made cells tested for stability and durability
  • Brand new condition ensures full performance from first use

Emergency AED power

The E-buy M3863A is a 12V 4.2Ah lithium-ion replacement battery built for the Philips FR2 Heartstart AED defibrillator. It restores the original 50.4Wh capacity so the unit stays ready for a cardiac emergency. The black pack fits M3860A, M3861A and M3840A part numbers without adapter cables. Medical facilities and first-response teams use it to keep life-support equipment operational.

Simple drop-in swap

Installation is a direct plug-and-play exchange: remove the depleted pack, insert the new one and latch the door. No soldering, firmware updates or calibration steps are required. The only common issue is forgetting to run the device self-test after the swap, which the AED prompts for automatically. Premium Chinese-made cells are rigorously tested before assembly to minimise early failures.

Steady output under load

During a rescue event the battery delivers consistent 12V power through repeated charge-discharge cycles without voltage sag. Lithium-ion chemistry holds charge over long standby periods so the defibrillator passes daily self-checks. The 4.2Ah rating supports multiple shocks and extended monitoring when mains power is unavailable. One-year guarantee backs the cell stability in demanding environments.

Highlights

  • 12V 4.2Ah Li-ion capacity powers Philips FR2 AED reliably
  • 4Wh energy rating supports extended emergency readiness
  • Direct replacement for M3860A M3861A M3840A models fits without modification
  • Premium Chinese-made cells tested for stability and durability
  • Brand new condition ensures full performance from first use

Specifications

Battery TypeLithium-Ion

Questions about this item

How can I confirm the E-buy M3863A battery is working correctly after installing it in my Philips FR2 Heartstart AED?

After insertion, run the AED's built-in self-test; a successful pass indicates the 12 V 4.2 Ah Li-ion pack is delivering the required 50.4 Wh capacity for emergency readiness.

What does the package contain and is anything else required to replace the battery in a Philips FR2 Heartstart AED?

The box includes one M3863A replacement battery; no additional parts or modifications are needed for direct plug-and-play installation in compatible defibrillators.

Which Philips FR2 Heartstart AED models does the M3863A battery replace so I can choose the right version?

This 12 V 4.2 Ah Li-ion battery replaces M3863A, M3860A, M3861A and M3840A, so select it when your device uses any of those original part numbers.

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