We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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 Voltage3.7V
  • Battery Capacity4500mAh
  • 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.

Highlights

  • 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

Specifications

BrandKingSener
Model27058
Part Number27058
37728
Battery Voltage3.7V
Battery Capacity4500mAh

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.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.