Urovo HB40DT610 Replacement Battery 3.87V 4000mAh

Urovo DT610 / DT610 RFID Mobile Computer — 3.87V Li-Polymer Replacement Battery (HB40DT610)

This is a 3.87V, 4000mAh Li-Polymer battery for the Urovo DT610 and DT610 RFID Mobile Computer. It replaces OEM part number HB40DT610 and fits directly in both the standard DT610 and the RFID variant. Dimensions are 81.50 x 63.70 x 9.00mm — verify fit before ordering if your unit has been modified.

• DT610 and DT610 RFID compatibility: Both the standard and RFID variants run the same 3.87V power rail and use the same battery bay geometry. The HB40DT610 part number covers both. The RFID module draws additional current during tag reads, which is within the BMS discharge envelope on this cell.
• Bench tested on actual hardware: We cycled this pack through combined scan-trigger and wireless polling loads. The BMS held stable voltage under rapid burst scanning and showed clean cutoff at the low-voltage threshold — no false trips during high-frequency read sequences.
• First-shift inrush protection: After installing a new pack, seat the scanner in its cradle and run a full charge cycle before starting pick-and-pack. Scan-trigger inrush current peaks hardest when the cell is near minimum, and a fully charged cell prevents the BMS from tripping on the first shift's opening burst.

Cradle showing a charging error on a new HB40DT610 pack

Charging docks on the DT610 use contact-based communication alongside power delivery. If the dock contacts or the battery terminals have residue or oxidation, the dock reads a handshake fault and flags a charging error rather than a dead battery. This is not a defective cell — it is a contact resistance issue. Wipe the gold contacts on the battery and the dock with a dry cloth, reseat the pack firmly, and the charge indicator should switch to active within 30 seconds.

Scanner losing wireless connection during rapid scan bursts

The DT610 runs its wireless radio and scan imager from the same cell simultaneously. During a rapid-fire scan sequence, the combined inrush from the imager trigger and the radio transmit cycle creates a short voltage sag at the pack terminals. If the cell is already partially depleted, that sag can dip below the radio module's minimum operating voltage, causing a momentary disconnect. Keeping the pack above 3.6V at the terminal during heavy shifts prevents this — charge before the pack drops into the lower third of its capacity range.