Intermec CN2 Barcode Scanner Compatible Battery 3.7V 1800mAh

Intermec CN2 — 3.7V Li-ion Replacement Battery (074201-004)

This 3.7V, 1800mAh lithium-ion battery replaces the original pack in the Intermec CN2 handheld barcode scanner. It matches OEM part numbers 074201-004 and 203-778-001. The CN2 is a compact data collection device used in warehouse, retail, and asset-tracking environments.

• CN2 platform fit: The CN2 runs a single-cell 3.7V architecture. This pack matches that voltage rail, the physical connector, and the BMS handshake the device expects at power-on. Any mismatch in the BMS negotiation causes the scanner to refuse to boot, so voltage and connector alignment both matter here.
• Bench tested on actual hardware: We cycled this pack on a CN2 unit through combined scan trigger and 802.11b radio activity. The BMS held steady across rapid scan bursts without tripping into protection mode, and the pack accepted a full charge cycle through the cradle without a dock error.
• First-shift cradle cycling: After installing this pack, seat the CN2 in its charging cradle and run a full charge cycle before using it on the floor. Scan trigger inrush current peaks when the cell is near minimum voltage — a fully charged cell prevents false BMS trips on the first pick-and-pack shift.

Cradle showing a charging error on a brand-new pack

A charging error on a new pack almost always comes down to contact resistance at the dock, not a fault with the battery itself. Dust, oxidation, or a thin film on the pack's gold contacts prevents the cradle from detecting a valid cell. Wipe the contacts on both the pack and the dock with a dry lint-free cloth, then reseat firmly until you hear the click. The cradle should transition from error to charging within a few seconds of good contact.

Scanner losing wireless connection during back-to-back scan bursts

During rapid scanning, the CN2 pulls current from both the imager and the 802.11 radio at the same time. If the cell voltage sags below the radio's minimum operating threshold under that combined load, the wireless stack drops. This typically shows up mid-shift as the scanner freezing or losing its network session. A healthy, fully charged pack holds the voltage above 3.5V under this dual draw — if drop-outs persist after a full charge cycle, the original pack has likely degraded past the point of recovery.