Quasar NP55 6V Ni-MH Replacement Battery 2100mAh

Quasar 500VM-505 / VM Series — 6V 2100mAh Ni-MH Replacement Battery

This is a 6V 2100mAh Ni-MH replacement battery for Quasar camcorder and camera models including the 500VM-505, VM-55, VM-100, and VM-110VM, among others. It slots into the same battery compartment as the original cell and connects to the same charging circuit. Capacity is rated at 12.6Wh.

• VM series compatibility: The 500VM-505, VM-55, VM-100, and VM-110VM all run the same 6V battery rail with an identical connector footprint. One cell fits across the range because Quasar standardised voltage and form factor across this camcorder line.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on a 6V Ni-MH compatible charger. The BMS accepted the cell without fault flags, and terminal voltage held steady through mid-discharge before the expected Ni-MH voltage drop at end of cycle.
• First-use charge cycle on Quasar VM bodies: Ni-MH cells in this voltage class can read inaccurately on the camera's battery indicator until the BMS maps the discharge curve. Run one complete charge cycle through the OEM charger or camera body before your first shoot to calibrate the indicator correctly.

Battery indicator stuck at full or jumping erratically on Quasar VM camcorders

Quasar VM-series bodies use a voltage-threshold map to estimate remaining charge. Ni-MH cells have a flatter discharge curve than the original cell the BMS was tuned for, so the indicator can read full for extended periods then drop suddenly. This is a firmware-side estimation issue, not a fault with the cell itself. After two or three full charge-discharge cycles, the indicator typically stabilises and tracks more accurately through the discharge range.

Camera body shows dead battery on a new cell straight out of the packaging

Ni-MH cells ship in a partially discharged state — often below 5.5V — which can trigger the low-battery cutoff on Quasar VM bodies before the camera even powers on. The fix is straightforward: place the cell in the charger first and bring it to a full charge before inserting it into the camera. Once the cell reaches the 6V nominal range, the body will power on and accept it normally.