Symbol 20-16228-07 WSS1000 Barcode Scanner Compatible Battery 3.6V 1800mAh

Symbol WSS1000 Series — 3.6V Li-ion Replacement Battery (20-16228-07)

This 3.6V 1800mAh Li-ion battery replaces the OEM pack in Symbol WSS1000, WSS1040, WSS1050, and WSS1060 handheld barcode scanners. It matches the original voltage and connector spec so the scanner powers on without reconfiguration. Capacity is 1800mAh — use the product data figure, not third-party listings that inflate this number.

• WSS1000 series fit: The WSS1000, WSS1040, WSS1050, and WSS1060 share the same battery bay dimensions, contact pinout, and 3.6V rail. One pack covers the full line because Symbol kept the form factor consistent across these cordless scanner variants.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a WSS1000 unit, monitoring BMS communication and contact voltage. The protection circuit responded correctly to scan-trigger inrush and wireless radio draw without false cutoff.
• First-shift cradle cycle: After installing, seat the scanner in its charging cradle and run a full charge before the first pick-and-pack shift. Scan-trigger inrush current is highest when the cell is near minimum voltage — a fully charged cell prevents a BMS trip on the first heavy scan burst of the day.

Cradle showing a charging error on a new pack

A charging error on a fresh pack almost always comes down to contact resistance at the dock, not a fault inside the battery. Oxidation or debris on the cradle contacts increases resistance enough that the dock detects an abnormal charge curve and flags an error. Remove the scanner, wipe both the battery contacts and the cradle contacts with a dry cloth, then reseat firmly. If the error clears, run the pack to a full charge before use — interrupted charge attempts early in a new pack's life can skew the BMS state-of-charge calibration.

Scanner dropping wireless connection during rapid scan bursts

The WSS1000 draws from the same cell for both the scan engine and the wireless radio simultaneously. During a fast scan burst, the combined inrush from the laser or imager firing and the radio transmitting causes a brief voltage sag on the cell. If the cell voltage dips below the BMS low-voltage threshold — typically around 3.0V under load — the pack trips and the radio drops out before the scanner fully shuts off. A degraded OEM pack sags harder because its internal resistance has risen with age. With a fresh 1800mAh cell at full charge, the voltage sag under combined scan-and-radio load stays within the BMS operating window and the connection holds.