Quasar 500VM-505 Camera Replacement Battery 6V 1200mAh

Quasar 500VM-505 / VM Series — 6V Ni-MH 1200mAh Replacement Battery

This is a 6V, 1200mAh Ni-MH replacement battery for Quasar camcorders and camera models including the 500VM-505, VM-55, VM-100, and VM-110VM, among others. It slots into the original battery compartment and restores power to image capture, recording, and viewfinder functions. Capacity is rated at 1200mAh (7.2Wh), matching the original cell specification.

• VM-series camcorder compatibility: These Quasar VM-series models share a common 6V battery rail and the same physical form factor, which is why one cell covers the full range. The connector orientation and BMS handshake voltage threshold are consistent across this lineup.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a VM-series body. The BMS accepted the new cell after one full charge pass from the OEM charger, and battery-remaining display tracked consistently through the discharge curve.
• First-cycle initialisation on VM-series bodies: Quasar VM camcorders map the battery-remaining indicator against the cell's discharge curve during the first charge cycle. Run the first full charge inside the camera body or OEM charger — not a third-party charger — so the body calibrates the gauge correctly from the start.

Dead battery indicator on a partially charged replacement cell

Quasar VM-series bodies read battery state by mapping resting voltage against a stored discharge curve for Ni-MH chemistry. A new, uncalibrated cell can sit at a mid-range resting voltage that the body misreads as depleted. This is a gauge calibration issue, not a faulty cell. Run one full charge cycle through the OEM charger or camera body, and the indicator will align correctly to the actual charge state.

Battery percentage jumping erratically during recording

Ni-MH cells have a flatter voltage discharge curve than Li-ion, and VM-series bodies can mistrack percentage when the new cell's curve differs slightly from the original. During continuous recording, combined sensor, processor, and tape-drive draw causes momentary voltage sag that the meter interprets as a sudden drop. This settles after two to three full charge-discharge cycles as the body refines its curve mapping. If the display still jumps after three cycles, check resting voltage at the battery terminals — it should read between 6.0V and 6.3V on a full charge.