Canon NoteJet III Replacement Battery 10.8V 6600mAh DR202

Canon NoteJet III Series — 10.8V Li-ion Replacement Battery (DR202)

This 10.8V, 6600mAh (71.28Wh) Li-ion battery replaces the original DR202 cell in Canon NoteJet III, NoteJet III CX, and P120 laptops. It restores untethered operation to the notebook when the original cell has degraded or failed entirely. Voltage and connector match the OEM spec — no adapter or modification needed.

• NoteJet III and III CX platform fit: Both the standard NoteJet III and the CX variant use the same 10.8V battery rail and DR202 connector footprint. Compatible OEM part numbers across this cluster include DR202, EMC36, ME202BB, NL2020, and SMP02 — all share the same BMS handshake requirement.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the NoteJet platform. The BMS negotiated correctly with the laptop's charge controller, accepted current without tripping protection, and held voltage stable through the full discharge curve.
• Post-swap calibration on the NoteJet III: After fitting this battery, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle. Skipping this step leaves the fuel gauge reading inaccurate and triggers a false "poor health" warning in system diagnostics.

BIOS reporting battery health as poor after replacing the DR202 cell

The NoteJet III BIOS stores capacity and health data in the old cell's EEPROM. When a new cell goes in, the BIOS compares live readings against stale reference data and flags a mismatch as poor health. This is not a fault with the replacement cell — it is a calibration state. Run the battery from full charge down to hibernate-cutoff, then back to 100% without interruption. After one or two complete cycles, the BIOS rewrites its reference data and the warning clears.

Laptop shuts down at 20–30% remaining shown on the gauge

This happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The gauge estimates remaining charge based on data from the old degraded cell, so it misreads where the voltage cliff sits on the new one. Under combined CPU and display load, the laptop hits the real low-voltage cutoff before the gauge catches up. Run two full discharge-to-hibernate cycles and the fuel gauge IC recalibrates — after that, the 20–30% shutdown stops. Confirm the cell is holding above 10.0V at the point the laptop would previously cut out.