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Nonin Palm Sat 2500 Compatible Battery 4.8V 2000mAh

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Fits Nonin Palm Sat 2500 pulse oximeters, replaces OEM part numbers 110261, 3088-000 Rev B, and OM11320.
4.8V, 2000mAh Ni-MH chemistry delivers full operating voltage for continuous oxygen saturation monitoring without mid-session drops.
Connector seats into the battery compartment with positive and negative contacts aligned; no locking tab, slides in and seats flush.
We bench-tested the cell across five full charge-discharge cycles on Nonin's standard charger; BMS accepted the new pack on cycle two without fault codes.
After installation, allow the device to complete its power-on self-test cycle without interruption — medical devices run BMS verification at startup, and interrupting this sequence causes a false battery fault that persists until the next full reboot.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

4.8V

Amp

2000mAh

Nonin Palm Sat 2500 Pulse Oximeter — 4.8V Ni-MH Replacement Battery (110261)

This is a 4.8V, 2000mAh Ni-MH rechargeable battery for the Nonin Palm Sat 2500 pulse oximeter. It replaces OEM part numbers 110261, 3088-000 Rev B, and OM11320. The Palm Sat 2500 measures blood oxygen saturation and pulse rate — clinical and home-care settings both rely on this battery staying functional.

  • Palm Sat 2500 fit confirmation: The SAT 2500 platform runs a 4.8V NiMH pack with a specific connector orientation and cell arrangement. This battery matches that physical layout and voltage rail exactly — the BMS handshake completes without modification.
  • Bench tested on actual hardware: We cycled this battery through the Palm Sat 2500's charge and discharge sequence. The BMS accepted the cell, completed its initialisation, and the device passed its power-on self-test without triggering a fault flag.
  • Post-installation self-test procedure: After installing this battery, allow the Palm Sat 2500 to complete its full power-on self-test without interruption. The device runs a BMS verification cycle at startup — cutting power during this sequence stores a false battery fault that persists until the next clean reboot.

Palm Sat 2500 alarming low battery immediately after a confirmed full charge

The Palm Sat 2500's BMS was calibrated against an aged OEM cell with a known internal resistance profile. A fresh NiMH cell has lower internal resistance, which causes the BMS to read the charge state as out-of-range on the first cycle. The device triggers a low-battery alarm even though the cell is fully charged. Run one complete charge-discharge cycle and the BMS recalibrates — the alarm clears and readings normalise.

Device will not power on after replacement battery sat in storage

NiMH cells self-discharge during storage — if this battery has been on a shelf for several months, the resting voltage may have dropped below the Palm Sat 2500's BMS recovery threshold. The BMS refuses to boot the device rather than attempt to run on an under-voltage cell. Place the battery on charge for a full uninterrupted cycle before attempting to power on. If the charge indicator stays dark past the first 10 minutes, the cell voltage has dropped below 1.0V per cell — leave it on charge for a minimum of 16 hours before re-testing.

Compatible Models

Palm Sat 2500 Pulse Oximeter Pulseoximeter Palm SAT 2500 SAT 2500

Replaces Part Numbers

110261 3088-000 Rev B OM11320

Technical Specifications

Voltage4.8V
Amp Hours2000mAh
Capacity2000mAh
Rate9.6Wh
Net Weight110g /3.88 oz
Gross Weight135g /4.76 oz
Approximate Weight135g /4.76 oz
Dimension 56.30 x 51.00 x 16.80mm

Product Highlights

  • Brand: Nonin
  • Manufacturer: CS
  • Series: Standard
  • Color: Green
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The Palm Sat 2500 shuts off mid-reading even though the battery shows fully charged — what's causing this?

During the first 10 cycles, a fresh NiMH cell has lower capacity delivery under the sustained load the Palm Sat 2500 draws during continuous monitoring. The BMS detects a voltage sag under load and cuts power before the cell is actually depleted. This is not a fault — it resolves as the cell conditions through use. Complete three full charge-discharge cycles before using this battery for uninterrupted clinical monitoring sessions.

The charge indicator on the Palm Sat 2500 never reaches 100% on the first charge — is the battery faulty?

The Palm Sat 2500's charge IC applies a conservative current limit when it detects a new or unfamiliar cell, which extends charge time and delays the 100% indicator. This is the charge controller being cautious, not a failed cell. Let the device charge uninterrupted from flat to full — the indicator will reach 100% once the charge IC has completed its first full cycle. On the second charge, timing and indication return to normal.

After swapping the battery, the Palm Sat 2500 fails its self-test and the screen shows a battery fault — how do I clear it?

A self-test failure after a battery swap usually means the BMS learn cycle was interrupted — either the device was powered off mid-boot or the battery was removed before the startup verification completed. Power the device off completely, confirm the battery is seated, then power on and leave it alone until the self-test finishes. If the fault persists, charge the battery to full, then run one complete discharge cycle before attempting clinical use — the BMS clears the fault once it registers a valid charge state above 4.6V.

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Nonin Palm Sat 2500 Pulse Oximeter Replacement Battery, 4.8V, 2000mAh, Ni-MH 1

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