Intermec SR61T Barcode Scanner Replacement Battery AB3 3.7V 2600mAh

Intermec SR61T / SR61 Series — 3.7V Li-ion Replacement Battery (AB3)

This 3.7V, 2600mAh Li-ion battery replaces the OEM pack in the Intermec SR61T and SR61 handheld barcode scanners. It also fits the IP30 and IP30A sled accessories that share the same power architecture. OEM part numbers AB3, AB19, 075082-002, 075082-001, and 318-037-001 all cross to this pack.

• SR61 and IP30 platform fit: The SR61T, SR61, IP30, and IP30A share the same 3.7V single-cell architecture and battery connector pinout. The BMS handshake uses the same thermistor line across the family, so one pack covers all listed models without modification.
• Bench tested on actual hardware: We cycled this pack through full charge and discharge sequences on the SR61T platform. The BMS held cutoff correctly at low voltage and accepted charge without fault flags across multiple cycles.
• First-shift preparation for pick-and-pack use: After installing, seat the scanner in its cradle for a complete charge cycle before use. The scan trigger draws an inrush spike each pull, and that spike is highest when the cell is near minimum. A fully charged cell prevents false BMS trips at the start of a shift.

Cradle showing a charging error on a new pack

The SR61T cradle checks contact resistance before initiating a charge cycle. If the dock contacts on either the cradle or the battery are oxidised or dirty, the cradle reports a fault rather than starting charge. This is not a fault with the cell itself. Wipe the gold contacts on the battery and cradle with a dry lint-free cloth, reseat the scanner firmly, and the charging indicator should switch to active within 30 seconds.

Scanner losing wireless connection during rapid scan bursts

The SR61T runs both its radio and its scan engine from the same cell. During a rapid scan burst, the combined draw from the imager trigger and the wireless polling interval pulls the cell voltage down sharply. If the cell is aged or sitting below 50% charge, that voltage sag can drop below the radio module's minimum operating threshold, causing a momentary disconnect. Keeping the pack above 3.5V under load prevents this — charge before high-frequency scanning sessions rather than topping up mid-shift.