Falcon PSC 4220 Compatible Battery 3.7V 1800mAh Li-ion

Falcon PSC 4220 / PSC 4223 — 3.7V Li-ion Replacement Battery

This 3.7V 1800mAh Li-ion cell replaces the factory battery in the Falcon PSC 4220, PSC 4223, and PSC 4220-1011R handheld barcode scanners. It restores full scan and wireless function to devices used in retail, logistics, and inventory workflows. Capacity is rated at 6.66Wh, matching the original pack's output specification.

• PSC 4220 / 4223 platform fit: These three models share the same battery bay dimensions, 3.7V supply rail, and BMS communication protocol — one cell fits all three without modification or adapter.
• Bench tested on actual hardware: We cycled this pack through the PSC 4220's charge management circuit and confirmed the BMS accepted the cell without fault codes. Full charge current engaged immediately on dock insertion.
• First-shift prep for pick-and-pack use: After installing, seat the scanner in its cradle and run a full charge cycle before starting your shift. Scan-trigger inrush current peaks when the cell is near minimum — a fully charged cell prevents false BMS cutoffs on the first heavy scan burst of the day.

Cradle showing a charging error on a new pack

The PSC 4220 cradle reads battery state through gold contact pins on the base of the scanner. Oxidation or debris on either the pack contacts or the cradle pins raises contact resistance enough to trigger a charge fault. The dock interprets high resistance as a missing or damaged cell and stops charging. Wipe the battery contacts and cradle pins with a dry cloth, reseat the scanner firmly, and confirm the charge indicator turns solid within 10 seconds.

Scanner losing wireless connection during rapid scan bursts

The PSC 4220 draws from the same cell for both the imager and the wireless radio simultaneously. During rapid back-to-back scans, combined inrush from the scan trigger and radio polling can pull the cell voltage below the BMS hold threshold momentarily. The radio drops connection first because its voltage floor is tighter than the imager's. If this happens mid-shift, pause scanning for a few seconds to let the cell voltage recover above 3.5V, then reconnect.