Casio DT-9023 Barcode Scanner Replacement Battery 7.4V 3400mAh

Casio IT3000 / IT2000 Series — 7.4V Li-ion Replacement Battery (DT-9023)

This is a 7.4V, 3400mAh Li-ion replacement battery for the Casio IT3000 and IT2000 series handheld barcode scanners. It replaces OEM part numbers DT-9023, DT-9723, DT-9023LI, DT-9723LI, and DT-9723LIC. If your scanning sessions are cutting short or the original pack no longer holds charge, this is the direct swap.

• IT3000 and IT2000 platform fit: Both series run the same 7.4V battery rail, share the same connector footprint, and use the same BMS handshake protocol. One pack covers both platforms without modification.
• Bench tested on actual hardware: We cycled this pack through repeated scan-trigger and wireless polling loads. The BMS handled inrush current on rapid scan bursts without tripping, and cell voltage held stable across the discharge curve.
• First-shift charging tip: After installing, seat the scanner in its cradle and run a full charge cycle before starting pick-and-pack. Scan trigger inrush is highest when the cell is near minimum — a fully charged pack prevents false BMS trips during the first shift.

Cradle showing a charging error on a new pack

A charging error on a freshly installed pack almost always comes down to contact resistance at the dock, not a fault in the battery itself. Dust, oxidation, or residue on the pack's gold contacts interrupts the charge handshake before it completes. Wipe the contacts on both the pack and the cradle with a dry cloth, then reseat the scanner firmly. If the error clears within 30 seconds, the contacts were the issue — not the cell.

Scanner losing wireless connection during rapid scan bursts

The IT3000 draws from the same battery simultaneously for the scan trigger and the wireless radio. During rapid-burst scanning, the combined inrush can cause a momentary voltage sag that drops the radio below its minimum operating threshold. This shows up as a dropped connection mid-session, often misread as a Wi-Fi or Bluetooth fault. If it happens repeatedly, check pack voltage under load — a cell holding below 6.8V during burst draw needs replacement.