Opticon RS-3000 Barcode Scanner Compatible Battery 3.7V 380mAh

Opticon RS-3000 — 3.7V Li-Polymer Replacement Battery (AHB502535)

This is a 3.7V, 380mAh lithium-polymer cell that replaces the original AHB502535 battery in the Opticon RS-3000 handheld barcode scanner. The RS-3000 is used in retail, warehouse, and inventory environments where the scanner runs full shifts scanning product barcodes and transmitting data. Dimensions are 36.50 × 24.80 × 4.80mm — match these before installing.

• RS-3000 fit: The RS-3000 uses this slim Li-Polymer cell because the housing requires a flat-profile pack at this exact footprint. The BMS inside the scanner communicates with the cell to manage charge cutoff and low-voltage protection — the AHB502535 part number ensures the correct BMS handshake.
• Bench tested on actual hardware: We cycled this cell through repeated scan-trigger and wireless-polling loads on the bench. The BMS held charge cutoff at the correct upper threshold and tripped low-voltage protection cleanly without false cutoffs during inrush from the laser trigger.
• First-shift preparation: After installing, place the scanner in its cradle for a full charge cycle before use in pick-and-pack. Scan-trigger inrush current is highest when the cell is near minimum, and a fully charged cell prevents false BMS trips at the start of the first shift.

Cradle showing charging error on a freshly installed pack

A new Li-Polymer cell shipped in storage state can present a voltage low enough that the RS-3000 cradle flags a charging fault instead of starting a normal charge cycle. This happens because the dock checks cell voltage at first contact and refuses to charge if it reads below its minimum acceptance threshold. Wipe the battery contacts and cradle contacts with a dry cloth to remove any oxidation or residue that raises contact resistance. If the error persists, hold the scanner in the cradle manually for 30 seconds — this allows the dock to re-read the cell and initiate the charge cycle once voltage climbs above the acceptance floor.

Scanner losing wireless connection during rapid scan bursts

On the RS-3000, the wireless radio and the scan trigger fire simultaneously during fast pick-and-pack work. That combined inrush draws a sharp current spike that a degraded or deeply discharged cell cannot supply cleanly. Voltage sags briefly below the radio module's minimum operating voltage, and the wireless link drops. Starting each shift with a fully charged cell keeps the pack voltage high enough to handle both loads at once without sagging into a dropout.