Victor BN-R129 XM-C3-G Compatible Battery 1.2V 1200mAh

Victor XM-C3-G Series — 1.2V Ni-MH Replacement Battery (BN-R129)

This is a 1.2V, 1200mAh Ni-MH replacement battery for Victor portable media players. It fits the XM-C3-G, XM-ZX3-P, XM-C11-R, XM-PX33, and one additional model sharing the same BN-R129 specification. Use it when the original cell no longer holds a charge or the player fails to power on.

• XM-C3-G and related models: These players share the same battery bay dimensions, connector orientation, and 1.2V rail requirement. The BN-R129 form factor — 66.78 × 16.70 × 5.96mm — fits all listed models without modification.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on compatible hardware. The BMS accepted a standard trickle charge from a depleted state and stepped up to normal current without triggering a protection cutoff.
• First charge after installation: Victor media players can enter a deep-discharge protection state after extended storage. Connect the player to its charger immediately after installing the new cell and leave it for at least 30 minutes before attempting to power on — the device needs that initial trickle current before it will accept a normal charge cycle.

Media player not waking after extended storage

Ni-MH cells self-discharge over time, and Victor players running on the BN-R129 will drop below the minimum voltage threshold the device needs to initialise. When that happens, the player appears completely dead — no screen, no response to the power button. The protection circuit blocks normal charge current until the cell voltage rises above roughly 0.9V. Connect the charger and wait 30 minutes before pressing power; the trickle charge phase brings the cell back into the range where the player can boot normally.

Battery percentage jumping after cell swap

After fitting a new BN-R129, the on-screen battery indicator may jump between levels or read full then drop suddenly. Victor players estimate charge state by tracking voltage thresholds, and a fresh cell has a different discharge curve than the worn cell the firmware was last calibrated against. This settles after two or three full charge-to-empty cycles. Run the player down until playback stops, then charge fully to 1.2V — repeat twice and the indicator will stabilise.