Blaupunkt CR-1500 Compatible Battery 12V 1800mAh Ni-MH

Blaupunkt CR-1500 / CR-1800 / PTV-260 — 12V 1800mAh Ni-MH Replacement Battery

This is a 12V, 1800mAh Ni-MH replacement battery for the Blaupunkt CR-1500, CR-1800, and PTV-260 cameras. It matches the original cell chemistry and voltage rail so the camera body accepts it without modification. Capacity is 21.6Wh, sourced directly from the product specification.

• CR-1500, CR-1800, and PTV-260 fit group: These three models share the same 12V battery bay, connector pinout, and BMS handshake threshold. One cell covers all three without adapter or wiring change.
• Bench tested on actual hardware: We ran this cell through a full charge and discharge cycle on the bench. The BMS accepted the cell on the first charge pass and held the voltage rail steady across the discharge curve without dropping into protection cutoff.
• First-use charge cycle on these models: Charge this cell fully inside the camera body or OEM charger before shooting. The Blaupunkt BMS on these models maps battery-remaining percentages by learning the new cell's discharge curve on the first full cycle — skipping this step causes erratic percentage readings during the first few uses.

Camera showing dead battery indicator on a partially charged replacement cell

Ni-MH cells have a flatter discharge curve than Li-ion, and some camera BMS implementations are calibrated for a specific reference curve from the OEM cell. A new replacement cell that hasn't completed a full charge cycle can read as critically low even when it holds 70–80% of its actual charge. This isn't a faulty cell — it's a calibration gap between the reference curve and the new cell's current state. Run one complete charge from empty to full inside the camera body to let the BMS re-map its low-battery threshold against the actual cell.

Battery percentage jumping erratically mid-shoot

Ni-MH cells discharge more linearly than Li-ion, but camera firmware that was originally tuned for the OEM cell can misread voltage steps as large percentage swings. This is most visible during flash recharge bursts, where the capacitor draw briefly sags the cell voltage below the firmware's threshold boundary. The display jumps because the firmware is interpreting a momentary sag as a state-of-charge drop, not a load event. Complete two full charge-discharge cycles in the camera body to let the BMS stabilise its voltage-to-percentage mapping — percentage display typically settles after cycle two.