Honeywell 1202G Barcode Scanner Replacement Battery 3.7V 2000mAh

Honeywell 1202g / 1452G / 1472G Series — 3.7V Li-ion Replacement Battery (BAT-SCN01)

This 3.7V, 2000mAh Li-ion battery replaces the OEM pack in Honeywell 1202g, 1452G, 1472G, 1902GSR, and 31 additional models in the same scanner family. It fits handheld barcode scanners used in retail point-of-sale and warehouse pick-and-pack environments. Swap it when the original cell no longer holds charge through a full shift.

• 1202g / 1452G / 1472G platform fit: These models share the same 3.7V battery bay, contact layout, and BMS handshake protocol. One pack covers the entire series because the dock charging circuit and trigger-event current profile are identical across units.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a 1202g unit. The BMS accepted the cell without a fault flag, the cradle completed a full charge cycle cleanly, and the scanner resumed normal scan-trigger response at rated voltage.
• First-shift preparation: After installing, seat the scanner in its cradle and allow a complete charge cycle before starting pick-and-pack operations. Scan-trigger inrush current peaks when the cell is near minimum — a pre-charged pack prevents a false BMS trip on the very first shift.

Cradle showing a charging error on a new pack

Honeywell charging cradles monitor contact resistance on the battery terminals. Oxidation or residue on the gold-plated contacts can push resistance high enough that the dock reports a fault instead of starting a charge cycle. The cradle is not detecting a bad cell — it is detecting poor contact. Wipe the battery contacts and the cradle contacts with a dry lint-free cloth, reseat the scanner firmly, and the charge indicator should switch to active within 30 seconds.

Scanner dropping wireless connection during rapid scan bursts

The 1202g and 1452G draw simultaneously from the radio module and the scan trigger during a burst — combined inrush can cause a brief voltage sag on a low or degraded cell. When the radio module loses supply headroom, it drops its wireless association before reconnecting automatically. This looks like an intermittent connection problem but the root cause is cell voltage sagging under combined load. Charge the battery to full before a high-volume scanning session and check that the cell rests above 3.6V after a burst to confirm the pack is not approaching end of life.