PSC Falcon 4420 Barcode Scanner Replacement Battery 3.7V 2400mAh

PSC Falcon 4420 / 4400 / 4410 — 3.7V Li-ion Replacement Battery (11-0023)

This 3.7V, 2400mAh Li-ion battery replaces the original PSC 11-0023 pack in the Falcon 4420, 4400, 4410, and 2150 handheld barcode scanners. It fits the same battery bay and connects to the same contacts without modification. Capacity figure is taken from the product specification — 8.88Wh total energy.

• Falcon 4400-series compatibility: The 4400, 4410, and 4420 share the same 3.7V battery bay, contact layout, and BMS handshake protocol — one pack covers the full range. The Falcon 2150 uses the same OEM part number (11-0023) and draws from the same voltage rail.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a Falcon 4420 unit and monitored the BMS. The protection circuit responded correctly to over-discharge cutoff and resumed charging without reset intervention when reseated in the cradle.
• First-shift preparation: After installing, place the scanner in its cradle and run a full charge cycle before use in pick-and-pack. The scan trigger draws peak inrush current at low state-of-charge — a pre-charged cell avoids false BMS trips on the first shift when scan volume is highest.

Cradle showing charging error on a new pack

The Falcon cradle reads pack status through the battery contacts before it initiates a charge cycle. If contact resistance is too high — from dust, oil transfer, or a slightly misaligned seating — the cradle throws a fault rather than charging. Wipe the gold contacts on both the battery and the cradle with a dry cloth, then press the pack firmly until it clicks into place. If the error clears, the pack is good. If it persists after reseating, check the cradle contacts for visible debris or corrosion.

Scanner loses wireless connection during rapid scan bursts

The Falcon 4420 handles two simultaneous high-draw events during a fast scanning burst: the laser or imager fires while the radio transmits scanned data back to the access point. Both pulls happen at the same moment and create a combined inrush that can drag the cell voltage below the radio module's minimum operating threshold. The scanner drops the wireless session to protect the radio hardware. Start the shift with a fully charged pack — cell voltage at or above 4.1V gives enough headroom to absorb the combined draw without sagging below 3.5V at the radio rail.