Zebra SMB K3/470 Barcode Scanner Replacement Battery 3.7V 1500mAh

Zebra SMB K3/470 — 3.7V Li-ion Replacement Battery

This is a 3.7V 1500mAh Li-ion battery for the Zebra SMB K3/470 barcode scanner. It fits handheld scanners used in retail, warehouse, and logistics environments. Voltage and capacity match the original pack specification exactly.

• SMB K3/470 platform fit: These scanners share a common battery bay format, voltage rail, and BMS handshake profile. The 3.7V nominal output keeps the scan engine and wireless radio within their operating window across the full discharge curve.
• Bench tested on actual hardware: We cycled this pack through repeated scan-trigger and radio-transmit load sequences. The BMS held stable cutoff thresholds and did not false-trip under combined inrush from the laser engine and wireless polling.
• First-shift preparation: After installing, seat the scanner in its cradle and run a full charge cycle before use. The scan trigger draws its highest inrush current when the cell is near minimum — a pre-charged pack prevents the BMS from tripping on the very first pull of the shift.

Cradle showing a charging error on a new pack

Dock contacts on the K3/470 cradle accumulate oxidation and debris from warehouse use. Even a thin film on the pack or cradle contacts raises resistance enough to trigger a charging fault on the dock's charge controller. Remove the battery, wipe both the pack contacts and the cradle pins with a dry cloth, then reseat firmly. If the error clears, the connection was the cause — not the battery or the dock electronics.

Scanner losing wireless connection during rapid scan bursts

During rapid scanning, the radio transmitter and scan engine fire simultaneously, creating a combined inrush that momentarily pulls more current than either draws alone. If the cell voltage sags below the radio module's minimum operating threshold during that combined draw, the wireless link drops. This happens most often when the battery is below 30% charge. Recharge before starting a high-volume scan session to keep cell voltage above 3.5V under load.