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Rectangular lithium battery pack, matte finish, 55.3 by 49.2 by 14.0mm

Estry

Estry Standard Battery 4500mAh 3.7V for Masimo 4676 23794

SKU CH-V7ET-ZQX57

Lithium replacement battery rated 4500 mAh at 3.7 V for Masimo Radical and Pulse oximeter models including 4676 and 23794

  • Battery pack size1-pack
  • Battery typeLithium
  • Battery capacity4,500 mAh
  • Battery voltage rating3.7
  • Product typeBatteries
  • Replacement built to original Masimo 4676 specs
  • 4500 mAh capacity supports extended monitoring sessions
  • 7 V lithium chemistry matches device requirements
  • Certified to ISO9001, RoHS, CE, UN38.3 and MSDS
  • Fits Radical-7, Rainbow Set and Pulse Ox models

Direct Replacement for Masimo Pulse Oximeters

This Estry lithium battery pack delivers 4500mAh at 3.7V and matches the original Masimo specifications for the Radical-7, Radical Pulse and Rainbow Set Pulse Ox families. It fits the 23794, P1540000019 and 25950 part numbers without modification and includes overcharge, over-discharge, over-voltage and short-circuit protection. The cell measures 55.3 x 49.2 x 14.0mm and weighs 110.0g.

Replaces Worn or Degraded OEM Cells

When the factory pack no longer holds a full shift charge or shows swelling, this unit restores the rated 13.88Wh capacity and 3750mAh typical rating. The upgrade is worth it whenever the device reports low-battery warnings earlier than expected or fails the on-board self-test. ISO9001, RoHS, CE, UN38.3 and MSDS certifications confirm compliance with medical-grade safety standards.

Limited to Devices Using the 3.7V Form Factor

The pack only works in equipment designed for a single 3.7V lithium cell with the exact 55.3 x 49.2 x 14.0mm footprint and the Masimo connector layout. It cannot power devices that require a different voltage, a multi-cell arrangement or an alternative pin-out. Buyers needing higher capacity, a different chemistry or a non-Masimo pin-out must look elsewhere.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $25.99
Pricier than about 82% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameMasimo
Product typeBatteries
Power
Battery typeLithium
Battery capacity4,500 mAh
Battery voltage rating3.7
In the box
Battery pack size1-pack

Questions about this item

What are the exact dimensions of this 4500mAh battery so I can confirm it fits my Masimo Radical-7?

The battery measures 55.3 x 49.2 x 14.0mm and weighs 110.0g, matching the original form factor for the Masimo Puls type 4676.

How do I install this replacement battery in my Radical Pulse device, and what is the common mistake to avoid?

Power off the device, open the battery compartment, disconnect the old pack, and connect the new one matching the polarity; the common mistake is forcing the connector in reversed.

When will this 3.7V lithium pack need replacing, and what signs indicate it is time?

Expect several hundred charge cycles; replace when runtime drops noticeably, the pack swells, or the device reports a battery error despite a full charge.

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