Intermec CK3 Replacement Battery 318-034-001 3.7V 6800mAh

Intermec CK3 / CK3A / CK3X / CK3R Series — 3.7V Li-ion Replacement Battery (318-034-001)

This is a 3.7V, 6800mAh Li-ion battery for the Intermec CK3 family of handheld mobile computers. It fits the CK3, CK3A, CK3X, and CK3R — devices used in warehouse pick-and-pack, retail inventory, and field service data collection. Capacity figure is 25.16Wh, matching the original specification.

• CK3 family compatibility: The CK3, CK3A, CK3X, and CK3R all share the same battery bay geometry, connector pinout, and BMS handshake protocol. Swapping between these variants uses the same pack without modification.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a CK3 unit. The BMS communicated state-of-charge correctly to the OS, and the charging cradle accepted the pack without fault codes on either the dock or the device screen.
• First-shift preparation for pick-and-pack environments: After installing the pack, seat the scanner in its charging cradle and allow a full charge cycle before pulling it onto the floor. Scan trigger inrush current is highest when the cell is near its lower voltage threshold — a fully charged cell prevents the BMS from tripping on the first burst of heavy scanning.

Cradle showing a charging error on a new pack

Intermec CK3 docks use contact pins on the base of the scanner to negotiate charge current. If those contacts are oxidised or carry residue from warehouse handling, the dock reads elevated contact resistance and flags a charging fault. This is not a battery defect — it is a contact issue. Wipe the gold contacts on both the pack and the dock with a dry lint-free cloth, then reseat the scanner firmly until it clicks. The charging indicator should clear within a few seconds of a clean connection.

Scanner losing wireless connection during a rapid scan burst

During a rapid sequence of barcode scans, the CK3 draws simultaneously from the imager and the 802.11 radio. That combined inrush creates a short voltage sag on the battery rail. If the cell is degraded or sitting below 3.5V, the sag is deep enough to cause the radio stack to reset — which the OS reports as a dropped Wi-Fi connection rather than a power event. With this 6800mAh pack at a healthy state of charge, the sag stays within tolerance and the radio stays connected. If dropouts persist, check that the pack is above 3.6V before the shift starts using the device's battery status screen.