Honeywell CV30 Barcode Scanner Replacement Battery 3.7V 3400mAh

Honeywell CV30 — 3.7V Li-ion Replacement Battery (AB5)

This 3.7V, 3400mAh Li-ion battery replaces the AB5 pack in the Honeywell CV30 handheld barcode scanner. The CV30 is a mobile data collection device used in retail, warehousing, and inventory environments. Voltage, capacity, and connector position match the original specification exactly.

• CV30 platform fit: The CV30 runs a single-cell 3.7V architecture with a BMS handshake through the AB5 connector. This pack carries the same communication lines the CV30 dock and charging cradle expect to see — the scanner and cradle both negotiate charge state through those lines before current flows.
• Bench tested on actual hardware: We cycled this pack through repeated scan-burst sequences on a CV30 unit. The BMS held the charge rail steady through continuous trigger pulls and active wireless polling without dropping below the scanner's minimum operating threshold.
• First-shift charge protocol: After installing this pack, seat the CV30 in its cradle and run a full charge cycle before the first pick-and-pack shift. The scan trigger inrush current peaks when the cell is near minimum charge — a pre-charged cell prevents a false BMS trip on the first trigger pull of the day.

Cradle showing a charging error on a new AB5 pack

The CV30 cradle reads the pack's charge state through gold contact pins on the battery door. If those contacts have oxidation or residue from the old pack, the cradle throws a fault before any current flows. Wipe the pack contacts and cradle pins with a dry cloth, reseat the scanner firmly, and confirm the charge indicator lights within 10 seconds. If the error clears, the contact resistance was the cause — not the pack or the cradle electronics.

Scanner losing wireless connection during rapid scan bursts

The CV30's wireless radio and scan imager draw current simultaneously during fast barcode sequences. If the cell voltage sags below the scanner's radio-hold threshold during that combined inrush, the wireless stack drops and the unit re-associates with the access point — which appears as a connection loss rather than a power issue. This happens most often when the battery is below 20% charge. Keep the pack above that level during peak-demand shifts and the voltage rail stays stable enough to hold both loads.