Quasar VM-11C Replacement Battery 12V 1800mAh Ni-MH

Quasar VM-11C / VM-20AC Series — 12V Ni-MH 1800mAh Replacement Battery

This is a 12V Ni-MH replacement battery rated at 1800mAh (21.6Wh) for Quasar camcorders. It fits the VM-11C, VM-20AC, VM-21AC, VM-22AC, and over 32 additional models in the same series. Use it when the original cell no longer holds a charge or fails to power the camcorder through a full recording session.

• VM-11C / VM-20AC series compatibility: These camcorder models share the same 12V battery bay, connector pinout, and BMS handshake requirements. The voltage rail and cell count match across the listed Quasar models, which is why a single replacement cell covers such a wide range.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a Quasar camcorder body. The BMS accepted the cell without error codes, and the charge circuit completed a full cycle without interruption at the expected termination voltage.
• Ni-MH first-cycle conditioning on Quasar bodies: Run the first full charge in the OEM charger or the camera body before recording. Quasar's BMS maps the battery-remaining display against cell voltage thresholds — an unconditioned Ni-MH cell will cause the indicator to read inaccurately until one complete charge-discharge cycle is logged.

Why Quasar camcorders cut battery indicator to zero before the cell is actually flat

Ni-MH cells have a flatter discharge curve than Li-ion. Quasar's battery indicator is calibrated against voltage thresholds, and a new or recently unconditioned Ni-MH cell doesn't always match the expected voltage curve at each charge level. The result is the indicator dropping sharply or hitting zero while the cell still has usable capacity. Running two to three full charge-discharge cycles through the camera body resets this mapping and brings the indicator back in line with actual charge state.

Battery percentage jumping erratically during playback or recording

This is a voltage-threshold mismatch, not a faulty cell. The camcorder samples cell voltage at intervals and maps it to a percentage display calibrated against the original OEM discharge curve. A replacement Ni-MH cell, especially in its first few cycles, may discharge at a slightly different rate, causing the indicator to jump rather than step down smoothly. The fix is to complete at least two full charge and discharge cycles via the camera body at normal operating temperature. After that, voltage sampling and display should stabilise to within a consistent range.