Honeywell CV30 Barcode Scanner Replacement Battery AB5 3.7V

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

This 3.7V, 2600mAh Li-ion cell replaces the AB5 battery in the Honeywell CV30 handheld barcode scanner. The CV30 is used in retail and warehouse pick-and-pack operations where the scanner runs continuous scan cycles across a full shift. Swap this pack in when the original cell no longer holds charge through a working day.

• CV30 platform fit: The CV30 uses a single-cell 3.7V Li-ion pack with a proprietary connector and an onboard BMS that monitors cell voltage and temperature. This replacement matches that voltage rail and connector format so the device firmware recognises the pack at startup.
• Bench tested on actual hardware: We cycled this pack through repeated scan-trigger and wireless radio loads on the CV30 platform. The BMS held cutoff correctly at low-cell voltage and accepted a full charge cycle through the cradle without throwing a fault.
• First-shift charging: After installing, seat the scanner in its cradle and run a full charge cycle before starting pick-and-pack. The scan trigger inrush current is highest when the cell sits near minimum charge — a pre-charged pack prevents the BMS from tripping on the first heavy burst of the shift.

Cradle showing a charging error on a new pack

A charging fault on a fresh pack almost always comes down to contact resistance at the dock, not the cell itself. Dock contacts in high-use warehouse environments collect dust and residue, which raises resistance enough for the cradle to flag an error. Wipe the gold contacts on both the battery and the cradle with a dry lint-free cloth, then reseat the scanner firmly. If the error clears, the contacts were the cause — not the pack.

Scanner losing wireless connection during rapid scan bursts

The CV30 draws power simultaneously from the scan engine and the wireless radio during a rapid scan sequence. When the cell voltage sags under that combined load, the radio link drops before the scanner fully powers off — it looks like a connectivity fault but it is a voltage sag event. A cell that has aged past roughly 70% of its original capacity will sag far enough to trip this behaviour under a busy scan burst. Replace the pack and confirm the cradle charges it to 4.2V before returning the unit to the floor.