About this replacement
Philips SureSigns V24E / VS2 / VS3 — 10.8V Li-ion Replacement Battery (ME202C)
This is a 10.8V, 7800mAh lithium-ion battery built to the ME202C specification. It fits the Philips SureSigns V24E, VS2, and VS3 portable patient monitors. These monitors are used in clinical transport and bedside assessments where a failed battery is not a minor inconvenience.
- SureSigns V24E, VS2, and VS3 compatibility: All three models share the same 10.8V battery bus, ME202C connector pinout, and BMS handshake protocol. A single cell fits all three without modification.
- Bench tested on actual hardware: We ran the ME202C replacement through charge and discharge cycles on a SureSigns VS2. The BMS accepted the cell, completed status reporting, and held voltage within spec under simulated monitoring load.
- Power-on self-test after installation: After inserting this battery, let the device complete its full startup self-test without interruption. The SureSigns BMS runs a verification sequence at boot. Cutting power during this cycle registers a false battery fault that persists until the next clean reboot.
Why the SureSigns VS3 reports a battery fault after a confirmed full charge
The VS3 BMS stores a learned capacity profile from the previous cell. When a new cell is installed, the controller compares measured internal resistance and charge curve against that stored profile. A fresh lithium-ion cell has slightly higher initial resistance than a conditioned cell, so the BMS flags a mismatch. This is not a defect. Run one full charge-discharge cycle and the BMS rewrites the profile to match the new cell.
Charge indicator stuck below 100% on first charge
On the first charge, the SureSigns charge IC applies a conservative current limit to an unrecognised cell. This causes the charge cycle to terminate early, leaving the indicator at 85–95%. The cell is not faulty — the charge IC has not yet mapped the full capacity of the new pack. Discharge the battery fully through normal monitor use, then run a complete charge cycle uninterrupted. After that second cycle, the indicator reads correctly at 100%.