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Rectangular black Li-ion battery pack, model 27058 37728, 3.7V 4500mAh

KingSener

KingSener 27058 37728 3.7V 4500mAh laptop battery

SKU CH-9A03-KQGPZ MPN 27058

Replacement lithium-ion battery for Masimo RAD-97 pulse oximeter, 3.7V 4500mAh capacity

  • Battery voltage rating3.7 V
  • Battery capacity4,500 mAh
  • 7 V 4500 mAh Li-ion cell powers the Masimo RAD-97 pulse oximeter reliably
  • 100 % brand-new replacement matches original 27058 37728 form factor for drop-in fit
  • High-quality cells and PCB deliver full rated capacity with stable output
  • No false capacity claim — charge meets or exceeds design specification
  • Charge above 80 % once a month during storage to maintain cell health

Replacement battery for Masimo RAD-97

This KingSener 27058 battery replaces the original power source in Masimo RAD-97 pulse oximeters. It delivers 3.7 volts and 4500 milliampere-hours from new lithium-ion cells. The unit matches the original dimensions so installation requires no modification. It is intended for clinical staff who need a dependable spare or replacement.

Suitable for Masimo RAD-97 owners only

Technicians maintaining Masimo RAD-97 monitors can use this battery to restore full mobile runtime. Facilities using other patient-monitoring models should verify their exact part number before ordering. The pack is not designed for laptops, consumer electronics or any device outside the specified Masimo equipment.

3.7 V 4500 mAh lithium-ion cell

The single specification that determines fit is the 3.7 V 4500 mAh lithium-ion chemistry in the 27058 form factor. Only devices factory-specified for this exact voltage, capacity and physical layout will operate correctly. Confirm the original battery label shows 27058 or 37728 before purchase.

How it compares

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

Price $89.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameKingSener
Model name27058
Part number27058
37728
Power
Battery voltage rating3.7 V
Battery capacity4,500 mAh

Questions about this item

What Masimo device model must I own for this 27058 37728 battery to fit?

This battery is built for the Masimo RAD-97 Pulse Oximeter, matching the original 27058 and 37728 part numbers.

Will the 3.7V 4500mAh rating match the original battery in my RAD-97?

Yes, the voltage and capacity are identical to the factory cell, so runtime and charge behaviour stay the same.

How can I confirm the battery is working correctly after I install it?

Charge it fully, then run the oximeter on battery power; the device should show a full charge indicator and operate for the expected monitoring period.

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