Urovo U2 HBLU2 Replacement Battery 3.8V 2600mAh

Urovo U2 / U2 II — 3.8V Li-ion Replacement Battery (HBLU2)

The HBLU2 is a 3.8V, 2600mAh Li-ion cell that fits the Urovo U2 and U2 II handheld mobile computers. These are rugged barcode scanners used in warehouse picking, retail stocktaking, and inventory workflows. Voltage and connector match the OEM specification — no modification needed.

• U2 and U2 II compatibility: Both models share the same battery bay, connector pinout, and BMS handshake protocol. The U2 II carries forward the same 3.8V rail, so one replacement pack covers both generations without any adaptation.
• Bench tested on actual hardware: We cycled this pack through rapid scan-trigger bursts combined with active Wi-Fi polling. The BMS held stable through combined inrush draws and did not trip a premature low-voltage cutoff at any point during the test sequence.
• First-shift cradle charge: After installing a new pack, seat the scanner in its cradle for a full charge cycle before putting it on the pick floor. Scan-trigger inrush current is highest when the cell is near minimum charge — starting the shift on a full cell prevents false BMS trips during the first heavy scan burst.

Cradle showing a charging error on a new HBLU2 pack

Urovo cradles read pack state through the battery contacts before committing to a charge cycle. If any contact has oxidation or debris, the dock throws a charging fault even though the pack itself is fine. This is more common with new packs because the contacts haven't been worn smooth by repeated insertions. Clean the gold contacts on both the pack and the cradle slot with a dry lint-free cloth, reseat firmly, and the error clears in most cases.

Scanner losing wireless connection during a rapid scan burst

On the U2, the imager trigger and the Wi-Fi radio draw current at the same moment during a fast barcode burst. The combined inrush can cause a brief voltage sag on a degraded or partially charged cell, and the radio drops its association before recovering. A fresh, fully charged HBLU2 has enough headroom to handle both draws simultaneously without sag. If dropouts persist after a full charge, check that the cradle contacts are clean — a high-resistance connection limits charge acceptance and leaves the cell below the 3.6V threshold needed to sustain the combined load.