COMEN NV8 Patient Monitor Replacement Battery 14.8V 2600mAh

COMEN NV8 — 14.8V Li-ion Replacement Battery (022-000088-00)

This 14.8V 2600mAh Li-ion battery replaces part number 022-000088-00 in the COMEN NV8 portable patient monitor. It supports continuous vital sign monitoring during patient transport and assessments when AC power is unavailable. Capacity is 38.48Wh.

• NV8 monitor fit: The NV8 draws from a 14.8V four-cell Li-ion pack with a specific BMS handshake. This cell configuration matches that voltage rail and connector, so the monitor's power management system communicates correctly with the pack from first boot.
• Bench tested on actual hardware: We ran this pack through the NV8 power-on sequence and monitored BMS communication. The pack passed the device's startup self-test and held voltage steady across the full monitoring load profile without triggering a false low-battery event.
• Post-swap startup protocol: After fitting this battery, let the NV8 complete its full power-on self-test without interruption. The device runs BMS verification at startup — cutting power during this sequence creates a false battery fault that sticks until the next clean reboot.

NV8 not completing boot sequence on a new battery

The NV8 runs a BMS learn cycle on first use — if the cell voltage is below the device's minimum boot threshold after storage, the monitor may stall partway through startup. A new cell that has self-discharged during shipping can sit just under that threshold. Connect the monitor to AC power first, allow a full charge, then boot without AC. This resets the BMS state and the boot sequence completes normally.

Charge indicator not reaching 100% on first charge

The NV8's charge IC applies a conservative current limit when it detects a new or cold cell, which means the first charge cycle often terminates early at 90–95% indicated. This is the charge controller protecting the cell, not a fault. Run one full charge-discharge cycle — charge to termination on AC, use the monitor on battery until the low-battery alarm triggers, then recharge fully. After that cycle the charge IC recalibrates and the indicator reaches 100%.