ProAm USA Iris 7" Monitor Compatible Battery 7.4V 4400mAh

ProAm USA Iris 7" On-Camera Monitor — 7.4V Li-ion Replacement Battery

This 7.4V, 4400mAh Li-ion cell replaces the internal battery in the ProAm USA Iris 7" On-Camera Monitor. The Iris is a portable external monitor used on set for focus pulling, exposure checks, and live camera feed display. It draws steady current from this cell during extended shoots when mains power or a V-mount system isn't available.

• Iris 7" monitor platform: The Iris runs a fixed 7.4V two-cell Li-ion configuration. The BMS in this monitor expects a cell within a tight voltage window at startup — cells that sit below 6.0V from storage may not register on first connection.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the monitor platform, confirmed BMS handshake at startup, and verified stable voltage delivery under the panel and backlight draw without cutoff events.
• Storage between shoots: The Iris monitor's BMS does not actively balance cells during standby. If the battery sits fully charged for several weeks between productions, discharge it to around 50% before storing — Li-ion cells held at full charge lose capacity faster over time.

Why the Iris monitor shows no power despite a charged replacement cell

The Iris monitor's BMS performs a voltage check at power-on before enabling the display. A replacement cell that has discharged during shipping — often below 6.8V — may fall outside the acceptance window, and the monitor simply won't turn on. Connect the battery to a compatible Li-ion charger first and bring it to at least 7.2V before inserting it into the monitor. Once the cell clears the threshold, the monitor will power on normally and the BMS will complete its initialisation sequence.

Backlight brightness stepping down mid-shoot without user input

The Iris monitor includes a low-voltage protection circuit that reduces backlight output when cell voltage drops toward the cutoff threshold — this can look like an automatic brightness change but is actually a load-shedding response. The panel and backlight together are the primary draw, so brightness reduction happens earlier than users expect. If the monitor dims but hasn't shut off, check the cell voltage with a multimeter — a reading below 7.0V under load means the cell is near depletion. Recharge the cell fully and the monitor will return to full brightness on next use.