Unitech PA700 Replacement Battery 3.7V 3000mAh 1400-900023G

Unitech PA700 / PA720 / PA700MCA — 3.7V Li-Polymer Replacement Battery (1400-900023G)

This is a 3.7V 3000mAh Li-Polymer battery for the Unitech PA700, PA720, and PA700MCA handheld barcode scanners. It replaces OEM part numbers 1400-900023G, 1400-900033G, 1400-900035G, S12GT1301A, and S12GT301A. The pack restores scanning capability on units where the original battery no longer holds a charge through a full warehouse shift.

• PA700 / PA720 / PA700MCA compatibility: These three models share the same battery bay dimensions, 3.7V supply rail, and BMS handshake protocol — one pack covers all three without modification.
• Bench tested on actual hardware: We cycled this pack through repeated scan-burst and wireless polling loads. The BMS held voltage within spec during combined radio and imager inrush, and cell balance stayed stable across all test cycles.
• First-shift preparation: After installing, seat the scanner in its cradle and run a full charge cycle before deploying in pick-and-pack. The scan trigger and wireless radio draw peak current simultaneously at low state-of-charge, and a fully charged cell prevents false BMS trips on the first shift.

Cradle showing a charging error after fitting a new pack

Charging cradles for the PA700 series read pack voltage through spring-loaded dock contacts. If those contacts carry oxidation or debris from the old battery, the cradle may report a fault even though the new pack is fine. Remove the battery, wipe the gold contacts on both the pack and the dock with a dry lint-free cloth, then reseat firmly. The cradle should begin a normal charge cycle within 30 seconds of a clean reseat.

Scanner dropping wireless connection during rapid scan bursts

The PA700's imager and wireless radio fire simultaneously during a fast scan burst — both pulling current at the same moment. If cell voltage sags too far during that combined inrush, the BMS can briefly cut power to the radio, dropping the Wi-Fi or Bluetooth link mid-scan. This is most common when the battery is below 20% charge or when the cell has aged. Start each shift with a full charge and check pack voltage under load — if it drops below 3.4V during a burst, the cell needs replacing.