Intermec Pen Key 6210 Compatible Battery 6V 2000mAh 317-084-00

Intermec Pen Key 6210 / 4000 / 4500 / 5000 — 6V Ni-MH Replacement Battery (317-084-00)

This is a 6V 2000mAh Ni-MH replacement battery for the Intermec Pen Key 6210, 4000, 4500, and 5000 handheld data terminals. It replaces OEM part numbers 317-084-00, 317-084-001, 317-084-002, 317-084-003, and 406929. The pack slots into the same bay as the original and uses the same six-cell Ni-MH configuration at 12Wh total capacity.

• Pen Key 4000–6210 platform fit: These four models share the same battery bay dimensions, six-pin contact layout, and 6V nominal voltage rail. The BMS handshake across this series uses the same thermistor line, so one pack covers all four terminals without modification.
• Bench tested on actual hardware: We cycled this pack through repeated scan-trigger inrush events on a Pen Key 6210. The BMS held the voltage rail steady through burst scanning and showed no premature cutoff at the load spikes typical of laser trigger activation.
• First-shift cradle protocol: After installing this pack, seat the terminal in its cradle and run a full charge cycle before taking it onto the warehouse floor. Scan trigger inrush current is highest when the cell is near minimum charge, and a pre-charged pack prevents false BMS trips on the very first shift.

Cradle showing a charging error on a new pack

The Pen Key cradle uses spring-loaded contacts to communicate charge status and thermistor data from the pack. When contact resistance rises — from oxidation on the pack terminals or debris in the cradle bay — the charger interprets the signal as a fault and throws a charging error. This is not a battery defect. Wipe the gold contacts on the battery with a dry cloth, blow out the cradle bay, then reseat the pack firmly until it clicks. The error clears once contact resistance drops below the charger's threshold, typically under 0.5 ohms.

Scanner losing wireless connection during a rapid scan burst

During a fast scan burst, the Pen Key draws current simultaneously from the laser or imager and the wireless radio — both spike at the same moment. If the battery's internal resistance is elevated, this combined inrush causes a momentary voltage sag that drops the radio below its minimum operating threshold, dropping the wireless link. A fully charged, fresh pack keeps the voltage rail above 5.4V through the burst. If dropouts persist on a fully charged pack, measure the terminal voltage under load — if it sags below 5.2V, the cells are degraded and the pack needs replacement.