Datalogic LYNX 50-BTEC Replacement Battery 3.7V 4000mAh

Datalogic LYNX — 3.7V Li-Polymer Replacement Battery (50-BTEC)

This 3.7V 4000mAh Li-Polymer battery replaces the original pack in the Datalogic LYNX handheld barcode scanner. It fits the LYNX mobile computer used in warehouse, logistics, and point-of-sale environments. OEM part numbers 50-BTEC, 50-BTSC, and 94ACC0065 all cross to this replacement.

• LYNX platform compatibility: The LYNX uses a single-cell Li-Polymer architecture at 3.7V nominal. The BMS handshake on this platform authenticates via the connector's third pin — this replacement meets that signal requirement so the device boots without a battery-fault warning.
• Bench tested on actual hardware: We cycled this pack through scan-trigger bursts combined with active wireless polling. The BMS held stable across both simultaneous draws and did not trip a false low-voltage cutoff during the inrush peaks.
• First-shift preparation: After installing this pack, seat the scanner in its cradle and run a full charge cycle before the first shift. The scan trigger inrush current is highest when the cell is near minimum charge, and a fully primed cell prevents the BMS from tripping on the very first trigger pull of the day.

Cradle showing a charging error on a brand-new pack

A charging error on a new pack is almost always a contact resistance problem, not a faulty cell. The LYNX cradle reads battery state through the pack's contact pads, and any film — skin oil, warehouse dust, static charge residue — raises resistance enough to trigger a fault code. Wipe the gold contacts on both the battery and the cradle dock with a dry lint-free cloth, then reseat the pack firmly. If the error clears, the cell is fine and the dock has resumed communication.

Scanner dropping wireless connection during rapid scan bursts

The LYNX draws current from two sources simultaneously during a rapid scan burst: the imager or laser and the wireless radio. Combined, these can cause a momentary voltage sag on an underpowered or partially charged cell. When the cell voltage dips below the radio module's minimum operating threshold — approximately 3.2V under load — the wireless stack drops before the BMS fully trips. Charge the pack to 100% before a high-volume session, and if sags persist on an older pack, the cell has likely capacity-faded below the point where it can sustain both draws together.