Dolphin 6000LU1 Replacement Battery 3.7V 3300mAh

Dolphin 6000LU1 / 6500 / 6110 / 6100 — 3.7V Li-ion Replacement Battery (BP06-00028A)

This is a 3.7V 3300mAh Li-ion battery for the Dolphin 6000LU1, 6500, 6110, and 6100 handheld barcode scanners. These scanners run in retail stockrooms, distribution centres, and logistics operations where continuous uptime matters. The battery slots into the same bay as the original pack and connects to the same BMS contact points.

• 6000LU1, 6500, 6110, and 6100 compatibility: All four models share the same battery bay geometry and 3.7V single-cell architecture. The BMS on each device uses the same protection thresholds, so one pack covers the entire line without any firmware or connector mismatch.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the 6000LU1 and monitored BMS handshake across both cradle charging and USB. The protection circuit responded correctly to overcharge cutoff and low-voltage lockout at each test point.
• First-shift cradle protocol: After installing this pack, seat the scanner in its cradle and run a full charge cycle before putting it into pick-and-pack rotation. The scan trigger inrush current is highest when the cell is near minimum voltage — a fully charged cell prevents false BMS trips during the first shift.

Cradle showing a charging error on a new pack

The Dolphin cradle reads battery state through gold contact pins on the base of the scanner. If those pins carry oxidation or debris from a previous battery, the dock registers a contact resistance fault and throws a charging error — even on a brand-new pack. Wipe the contacts on both the battery and the cradle with a dry cloth, then reseat the scanner firmly until it clicks. The charge indicator should switch to active within 30 seconds. If it doesn't, check that the cradle is drawing power and repeat the reseat.

Scanner losing wireless connection during rapid scan bursts

The Dolphin 6000 series fires its radio and its scan engine simultaneously during a fast barcode burst. That combined draw — radio polling plus imager trigger — creates a short current spike that an aged or partially charged battery can't sustain cleanly. The voltage sags below the radio's minimum operating threshold and the wireless link drops. This does not mean the battery is faulty; it means the cell needs to be at or near full charge before a high-frequency scanning session. Charge the pack to 4.2V before any shift that involves continuous scanning.