About this replacement
Canon ELURA 40mc / 50 / 60 / 65 Series — 7.4V Li-ion Replacement Battery (NB-2L18)
This is a 7.4V, 2000mAh Li-ion replacement battery for the Canon ELURA MiniDV camcorder series. It fits the ELURA 40mc, 50, 60, and 65, along with over 46 additional compatible models. It replaces OEM part numbers NB-2L18, BP-2L18, and BP-2L24.
- ELURA series compatibility: These camcorders share the same 7.4V battery bay, connector pinout, and BMS handshake protocol across the line. One cell covers the full range without modification or adapters.
- Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on an ELURA body. The BMS accepted the cell without fault codes, and voltage under record-mode load held steady across the discharge curve.
- First-use charge cycle on ELURA camcorders: Insert the battery and charge it fully inside the camcorder body or OEM charger before your first shoot. Some ELURA BMS units need one complete in-body charge cycle to calibrate the battery-remaining display accurately on a new cell.
Canon ELURA BMS rejecting a third-party cell on first install
Canon's ELURA BMS runs an authentication check when a new cell is first detected. If the cell hasn't completed a charge cycle in the camera or OEM charger, the body may flag the battery as unrecognised and refuse to power on. This isn't a fault with the cell itself — it's the BMS waiting for a handshake it only triggers after a full charge sequence. Insert the battery, connect to the OEM charger, and let it charge to 100% before attempting to record.
Battery percentage jumping erratically on the ELURA display
The ELURA's battery indicator maps voltage thresholds from the OEM cell's discharge curve. A new replacement cell has a slightly different curve, so the indicator can jump from 100% to 60% quickly, then hold steady — this is a calibration mismatch, not a capacity problem. After one or two full charge and discharge cycles, the BMS re-maps its thresholds to the new cell and the display stabilises. If it continues past three cycles, check that resting voltage after a full charge reads at or above 8.3V.