Datalogic RBP-4000 GM4100 Barcode Scanner Replacement Battery 3.7V 2600mAh

Datalogic GM4100 / GM4400 Series — 3.7V Li-ion Replacement Battery (RBP-4000)

This 3.7V, 2600mAh Li-ion cell replaces the original RBP-4000 pack in Datalogic GM4100, GM4130, GM4400, and GM4430 handheld barcode scanners. These scanners run in retail checkout lanes, warehouse pick lines, and logistics intake stations where a dead battery stops operations cold. Voltage and connector match the OEM spec — no modifications needed.

• GM4100 / GM4400 platform fit: Both scanner families share the same battery bay geometry, contact layout, and BMS handshake protocol. One cell covers all four models because Datalogic kept the power architecture consistent across the GM4000 range.
• Bench tested on actual hardware: We cycled this pack through repeated scan-trigger bursts combined with wireless polling load. The onboard BMS held the voltage rail steady and did not trip on the inrush current spikes that occur during rapid scan sequences.
• First-shift prep for pick-and-pack lines: Before sending a freshly installed pack onto the floor, seat the scanner in its cradle and run a full charge cycle. Scan-trigger inrush current peaks when cell voltage is near minimum — a fully charged cell stops false BMS cutoffs from killing the first shift early.

Cradle charging error on a brand-new pack

GM4100-series docks use spring-loaded contacts that oxidise quickly in dusty warehouse environments. When contact resistance climbs above the dock's threshold, the charger reports a fault even though the pack itself is fine. Wipe the gold contacts on both the pack and the dock with a dry lint-free cloth, then reseat firmly. If the error clears within 30 seconds of reseating, contact resistance was the cause — not a faulty cell.

Scanner drops wireless connection mid-scan burst

During a rapid scan burst, the imager draw and the Bluetooth or 802.11 radio transmit pulse hit simultaneously — combined current can sag the cell voltage below the radio module's minimum threshold. The radio drops the link before the BMS trips, so the scanner goes silent but does not power off. This happens most often when the cell is below 30% charge. Recharge to full and monitor whether the drops stop — if they continue at full charge, the dock contacts may be limiting charge acceptance and the cell never reaches a true full-charge state.