Datalogic BY-01 Barcode Scanner Replacement Battery 3.7V 3200mAh

Datalogic BY-01 — 3.7V Li-ion Replacement Battery (BY-01 / 700311800)

This 3.7V, 3200mAh Li-ion battery fits the Datalogic BY-01 handheld barcode scanner. It replaces OEM parts BY-01 and 700311800. The BY-01 scanner is a compact unit used across retail, warehousing, and logistics pick-and-pack operations.

• BY-01 scanner platform fit: The BY-01 battery uses a 3.7V single-cell architecture matched to the scanner's imaging and wireless communication circuits. The connector pinout and BMS communication protocol align directly with the OEM charge management system inside the device.
• Bench tested on actual hardware: We ran this pack through charge cycles on the BY-01 and monitored BMS handshake, cutoff thresholds, and charge acceptance. The protection circuit triggered correctly at both high-current scan bursts and low-voltage cutoff, consistent with OEM behaviour.
• First-shift prep for pick-and-pack use: After installing, seat the scanner in its cradle for a full charge cycle before putting it on the floor. Scan trigger inrush current is highest when the cell is near minimum charge, and a pre-charged pack prevents false BMS trips when your team starts their first shift.

Cradle showing a charging error on a new pack

The BY-01 cradle reads the battery's charge state through contact pins on the base of the scanner. If those contacts are dirty or slightly misaligned, the dock reports a fault even when the pack itself is fine. Wipe the gold contacts on both the battery and the cradle with a dry cloth, then reseat the scanner firmly until it clicks. If the error clears within 60 seconds, contact resistance was the cause — not a faulty cell. The cradle should register a normal charge state above 3.0V at rest.

Scanner losing wireless connection during rapid scan bursts

During a fast scanning sequence, the BY-01 draws simultaneously from the imager, processor, and wireless radio. If the cell voltage sags under that combined load, the radio drops its connection before the scanner fully powers off — it looks like a wireless fault, but it is a power delivery issue. A fully charged pack handles the inrush; a partially depleted or degraded cell cannot sustain the voltage rail. Check the open-circuit voltage with a multimeter — anything below 3.5V under no load indicates the cell needs charging or has degraded past useful capacity.