Symbol PTC-960SL Replacement Battery 7.2V 600mAh 17503-002

Symbol PTC-960SL Series — 7.2V Ni-Cd Replacement Battery (17503-002)

This 7.2V, 600mAh Ni-Cd battery replaces the original pack in the Symbol PTC-960SL and PTC-960SL III handheld barcode scanners. It matches OEM part numbers 17503-002, 19903-015, 19903-106, 19903-107, WS-503002-M, and WHS-17503002. Voltage, connector, and BMS handshake all match factory spec.

• PTC-960SL and PTC-960SL III fit: Both models run the same 7.2V rail and share identical battery connector geometry and BMS communication protocol — one pack covers both without modification or adapter.
• Bench tested on actual hardware: We cycled this pack through scan-trigger inrush and wireless polling loads on the PTC-960SL. The BMS held stable across repeated burst sequences and accepted a full charge cycle without error flags.
• First-shift charge protocol: After installing a fresh pack, seat the scanner in its cradle and allow a complete charge cycle before starting pick-and-pack operations. Scan-trigger inrush current peaks when the cell is near minimum charge — a pre-charged cell prevents false BMS trips on the first shift.

Cradle showing charging error on a new pack

Charging dock errors on a new Ni-Cd pack are almost always a contact resistance issue, not a pack fault. Oxidation or residue on the battery's gold contacts raises resistance enough for the cradle to flag an abnormal charge curve. Wipe the pack contacts and the cradle's charging pins with a dry cloth or isopropyl alcohol, then reseat the scanner firmly. If the error clears within 60 seconds of reseating, contact resistance was the cause — the pack is fine.

Scanner losing wireless connection during rapid scan bursts

During a rapid scan burst, the scanner draws simultaneous current from the laser or imager and the wireless radio. On a partially discharged Ni-Cd cell, combined inrush can pull voltage momentarily below the radio module's minimum operating threshold, dropping the wireless link. This appears as a connection dropout rather than a scan failure, so the battery is often overlooked as the cause. Return the scanner to the cradle, allow the pack to charge above 7.0V, and the drop-outs will stop.