Mindray SV350 PRO 14.4V 6600mAh Replacement Battery LI24I001H

Mindray SV350 PRO / SV300 Series — 14.4V Li-ion Replacement Battery (LI24I001H)

This 14.4V 6600mAh Li-ion battery replaces the original power pack in the Mindray SV350 PRO, SV60, SV70, and SV300 patient monitors. These portable vital signs monitors use a shared battery platform across the SV-series line, and this cell covers that entire group. Capacity is 95.04Wh — matched to the product data, not estimated.

• SV-series shared battery platform: The SV60, SV70, SV300, and SV350 PRO all run the same 14.4V bus and use the same connector and BMS handshake protocol. One cell covers the group because Mindray standardised the power architecture across this monitor family.
• Bench tested on actual hardware: We cycled this cell through charge, hold, and load discharge on the SV-series platform. The BMS accepted the cell without a fault flag, completed the charge handshake, and held voltage within spec under simulated monitoring load.
• Post-installation self-test cycle: After fitting this battery, let the monitor complete its full power-on self-test without interruption. The SV-series BMS runs a chemistry verification step at startup — cutting power during that window logs a battery fault that sticks until the next clean reboot.

SV350 PRO alarming low battery with a freshly charged replacement installed

The SV350 PRO BMS was calibrated against the OEM cell's charge profile. A new third-party cell may not pass the BMS threshold check on the first cycle because its internal resistance and charge curve read slightly outside the expected window. This is not a fault with the cell — it is the BMS applying a conservative pass/fail gate. Run one complete charge-to-full, full-discharge cycle, then recharge. After that conditioning cycle, the BMS recalibrates its reference and the low-battery alarm clears at the correct charge level.

Monitor will not power on after the replacement cell sat in storage

Li-ion cells self-discharge during storage. If the cell voltage drops below approximately 10.8V — the SV-series BMS recovery threshold — the monitor will not boot because the BMS interprets that voltage as a damaged or over-discharged pack. Connect the monitor to mains power first and leave it on charge for at least two hours before pressing power. This allows the charge IC to trickle-charge the cell back above the BMS wake threshold. Once the cell climbs past roughly 12V, the BMS re-initialises and the monitor powers on normally.