AAXA P300 Pico Projector Compatible Battery 7.4V 1300mAh

AAXA P300 Pico Projector — 7.4V Li-Polymer Replacement Battery (CRTAAXAP300RB)

This 7.4V, 1300mAh lithium-polymer battery is a direct replacement for the AAXA P300 Pico Projector. It fits the compact pocket projector used for portable business presentations and personal media display. Capacity figures are taken from the product data: 1300mAh / 9.62Wh.

• P300 Pico Projector fit: The P300 uses a 7.4V Li-Polymer cell with a proprietary connector and BMS handshake tied to the projector's charging and lamp-power circuitry. This replacement matches that voltage rail and connector geometry so the internal charger and lamp driver communicate correctly.
• Bench tested on actual hardware: We cycled this battery through the P300's charge and discharge sequence. The BMS held the cutoff voltage correctly, and the lamp driver received stable current without triggering low-voltage shutdown ahead of the battery indicator reaching empty.
• Lamp brightness setting on battery power: Set the P300 to eco or low-brightness mode when running on battery. Full brightness draws 30–40% more current than eco mode — the lamp's minimum voltage threshold is reached sooner, and the projector will shut off before the battery indicator shows empty.

Why the P300 cuts out before the battery indicator reaches empty

The P300's lamp driver requires a higher minimum supply voltage than the battery's low-voltage cutoff threshold. As cell voltage sags under lamp load, the projector shuts off to protect the lamp circuit — even though the BMS has not yet triggered and the battery indicator still shows charge remaining. This gap widens as the cell ages and internal resistance rises, because voltage sag under load becomes more severe. Running eco brightness mode reduces lamp current draw and narrows that gap significantly.

P300 internal charger showing no charge activity after battery swap

If the P300's charge indicator does not activate after fitting a new battery, the cell voltage has likely dropped below the projector's charger pre-charge threshold — typically seen when a replacement cell has sat in storage. Connect the projector to power and leave it for 10–15 minutes; the charger should detect the cell once voltage recovers slightly above the threshold. If the indicator still does not activate, verify the battery connector is fully seated — the P300's connector requires firm pressure to make contact across all pins. A correctly seated, healthy cell should show a charging state at or above 6.0V.