Verizon SPro2 Replacement Battery 3.8V 6200mAh

Verizon SPro2 — 3.8V Li-Polymer Replacement Battery

This is a 3.8V, 6200mAh Li-Polymer replacement battery for the Verizon SPro2 portable projector. It fits both "SPro2" and "S Pro 2" labelled units — same hardware, different packaging runs. Swap it in when the original cell no longer holds a charge through a full presentation.

• SPro2 platform fit: Both SPro2 variants use the same 3.8V single-cell Li-Polymer pack with an identical connector and BMS handshake. Voltage rail and cell format match — the projector's charge management circuit recognises this cell without a firmware flag.
• Bench tested on actual hardware: We cycled this cell through the SPro2's internal charger and confirmed the BMS accepted charge without triggering a fault state. Discharge monitoring showed the cell holds its voltage curve through the lamp's operating range.
• Lamp brightness setting on battery power: Set the SPro2 to eco or low-brightness mode when running on battery. Full brightness draws 30–40% more current from the cell than eco mode. In most indoor presentation environments, the difference in image quality is not visible, but the draw on the cell is significant.

Why the SPro2 lamp cuts out before the battery indicator reaches empty

The SPro2's lamp requires a higher minimum voltage than the battery cutoff threshold the indicator is calibrated against. As the cell discharges and voltage sags, the lamp circuit hits its floor first — the projector shuts down even though the gauge still shows charge remaining. This is not a fault with the battery or the projector. It is a consequence of the lamp's voltage floor sitting above the cell's nominal empty point. A fresh, full-capacity cell has a flatter discharge curve and holds voltage above that lamp floor for longer before the sag occurs.

SPro2 not charging — internal charger accepting no current

If the SPro2 shows no charging activity after a battery swap, the most common cause is a deeply discharged cell that has dropped below the BMS's recovery threshold. The internal charger expects the cell to present above roughly 3.0V before it begins a charge cycle. Connect the projector to mains and leave it for 15–20 minutes without powering it on — the BMS on some units will attempt a trickle pre-charge to recover the cell voltage above the threshold. If the charge indicator still does not activate after that window, verify the USB-C power source is delivering at least 9V DC to the projector's input port.