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COMEN CM600 Patient Monitor Replacement Battery 14.4V 2600mAh

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Fits COMEN CM600 patient monitor; replaces OEM part number JHT-99K-00.
14.4V, 2600mAh capacity sustains continuous ECG, SpO2, blood pressure, and temperature monitoring through extended clinical shifts.
Connector slots vertically into battery bay with positive contact orientation; locking tab secures flush against device housing.
We bench-tested with CM600 load profile; BMS accepted charge curve on cycle one, voltage stable at 14.4V under monitor operation.
Allow the device to complete its power-on self-test cycle without interruption after installation — medical monitors run BMS verification at startup, and interrupting this sequence triggers 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 7 – 10 business days to your doorstep.

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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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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.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

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

Voltage

14.4V

Amp

2600mAh

COMEN CM600 Patient Monitor — 14.4V Li-ion Replacement Battery (JHT-99K-00)

This 14.4V, 2600mAh Li-ion battery replaces part number JHT-99K-00 in the COMEN CM600 portable patient monitor. It fits both the CM600 and CM-600 variants. The CM600 runs continuous multi-parameter monitoring — ECG, SpO2, NIBP, and temperature — drawing a consistent load that degrades original cells over time.

  • CM600 and CM-600 compatibility: Both model designations use the same 14.4V battery bay, connector pinout, and BMS handshake protocol. A single replacement cell covers either unit without modification.
  • Bench tested on actual hardware: We cycled this cell through the CM600's power-on self-test and multi-parameter load profile. The BMS completed charge verification and passed state-of-charge reporting to the device without triggering a battery fault.
  • Post-installation self-test requirement: After fitting this battery, allow the CM600 to complete its full power-on self-test without interruption. The device runs BMS verification at startup — cutting power during this sequence registers a false battery fault that persists until the next complete reboot.

CM600 not completing boot sequence after battery swap

The CM600 runs a BMS learn cycle at first power-on with a new cell. If the cell voltage sits below 13.0V after storage, the device may stall mid-boot or refuse to start entirely. This is a low-voltage lockout, not a failed battery. Connect the monitor to mains power first, allow the cell to charge to at least 14.0V, then attempt a cold boot from AC power before switching to battery-only operation.

CM600 alarming low battery immediately after a confirmed full charge

The CM600's charge indicator reaching 100% does not mean the BMS has completed its calibration with a new cell. On the first charge cycle, the BMS applies a conservative capacity threshold tuned to aged OEM chemistry — a fresh cell can read as low-capacity until one full charge-discharge cycle recalibrates the state-of-charge register. Run the monitor on battery until the low-battery alarm sounds naturally, then charge to full without interruption. The false low-battery alarm clears after this single conditioning cycle.

Compatible Models

CM600 CM-600

Replaces Part Numbers

JHT-99K-00

Technical Specifications

Voltage14.4V
Amp Hours2600mAh
Capacity2600mAh
Rate37.44Wh
Net Weight190g /6.70 oz
Gross Weight260g /9.17 oz
Approximate Weight260g /9.17 oz
Dimension 73.14 x 69.40 x 18.70mm

Product Highlights

  • Brand: COMEN
  • Manufacturer: CS
  • Series: Standard
  • Color: Blue
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The CM600 shuts off unexpectedly during patient monitoring even though the battery showed over 50% charge — what's happening?

New Li-ion cells have higher internal resistance in the first 10 cycles, which causes a sharper voltage sag under the CM600's continuous multi-parameter load. The BMS reads the sag as a critically low state-of-charge and triggers a protective shutdown before the displayed percentage catches up. This is not a faulty battery — the cell needs several full charge-discharge cycles before the BMS voltage-to-capacity mapping stabilises. Run three complete cycles on AC-backed mains power before relying on the battery for unsupported bedside monitoring.

The CM600 is reporting a battery self-test failure after I swapped in this replacement — is the cell defective?

A self-test failure immediately after a swap almost always means the BMS learn cycle has not completed, not that the cell is faulty. The CM600 requires one full charge-discharge cycle for the BMS to establish baseline capacity and internal resistance values against the new cell's chemistry profile. Charge the battery to 100% on mains, run the monitor on battery power until the device warns low, then recharge fully without interruption. Rerun the self-test after this cycle — it should clear.

The charge indicator on the CM600 stopped climbing at around 85–90% and won't reach 100% — is something wrong with the charger or the battery?

The CM600's charge IC applies a reduced current ceiling during the first charge of a new cell to protect against overcharge on an uncalibrated BMS. This causes the charge curve to plateau earlier than expected, typically between 85% and 92% on the first cycle. The cell is accepting charge normally — the displayed percentage is limited by a conservative firmware threshold, not by cell capacity. Complete one full charge-discharge cycle and the charge IC will adjust its limit; subsequent charges will reach 100%.

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