Motorola SB1 Barcode Scanner Replacement Battery 3.7V 1100mAh

Motorola SB1 Series — 3.7V Li-Polymer Replacement Battery (82-158057-01)

This 3.7V, 1100mAh lithium-polymer cell replaces the OEM pack in the Motorola SB1 handheld barcode scanner. It fits the SB1, SB1B-SE11A0WW, and SB1-HC variants used in retail, warehouse, and logistics environments. Voltage and capacity match the original spec exactly at 3.7V / 4.07Wh.

• SB1, SB1B-SE11A0WW, and SB1-HC compatibility: All three share the same battery bay geometry, contact pin layout, and BMS handshake protocol — one cell fits all without firmware conflicts or connector modification.
• Bench tested on actual hardware: We ran this pack through full charge and discharge cycles on the SB1 platform. The BMS responded correctly to cradle charging current, held voltage under combined scan-trigger and wireless radio load, and tripped protection at the expected low-cell threshold.
• First-shift preparation: After installing, place the scanner in its cradle for a full charge cycle before use. Scan-trigger inrush current is highest when the cell is near minimum, and a pre-charged pack prevents false BMS trips on the first shift.

Cradle charging error on a new SB1 pack

A new lithium-polymer cell ships at storage voltage — typically around 3.6V — which can sit below the cradle's charge-initiation threshold if contact resistance is also present. The dock reads this as a fault rather than a low cell, so it throws a charging error instead of starting a charge cycle. Wipe the gold contacts on both the pack and the cradle with a dry cloth to remove oxidation or residue. Reseat the scanner firmly and the cradle should begin charging within 30 seconds; if it doesn't, check cradle supply voltage at the dock pins — it should read 4.2V or above.

Scanner losing wireless connection during rapid scan bursts

The SB1 draws simultaneously from the wireless radio and the scan trigger during high-frequency scanning. If the cell voltage sags below approximately 3.4V under that combined load, the radio module drops its connection before the scanner's main processor registers a low-battery warning. This looks like a Wi-Fi or Bluetooth dropout but is actually a voltage event. Charge the pack fully before a high-throughput shift — a cell at 4.1V entering that workload handles the inrush without the sag that drops the radio link.