About this replacement
Intermec CK30 / CK31 / CK32 — 7.4V Li-ion Replacement Battery (318-020-001)
This 7.4V, 3400mAh lithium-ion pack replaces OEM part 318-020-001 (also cross-referenced as AB1G) in the Intermec CK30, CK31, and CK32 rugged handheld computers. These devices are used in warehouse, retail, and field operations where scanners run continuous scan-and-transmit cycles across shifts. The pack slots directly into the existing battery bay with no modification.
- CK30 / CK31 / CK32 platform fit: All three models share the same battery bay dimensions, 7.4V voltage rail, and BMS handshake protocol — which is why one pack covers the full CK3x line. The connector and cell communication lines are identical across the series.
- Bench tested on actual hardware: We cycled this pack through repeated scan-burst and wireless polling loads on a CK30 unit. The BMS held stable across the full discharge curve, with no false low-voltage cutoff during high-frequency trigger pulls.
- First-shift prep for CK3x scanners: After installing, seat the scanner in its cradle and run a full charge cycle before putting it on the pick floor. Scan trigger inrush is highest when the cell is near minimum charge — a fully primed pack stops the BMS from tripping on the very first burst of the shift.
Cradle showing charging error after fitting a new CK30 pack
A charging error on a freshly installed pack is almost always a contact resistance problem, not a faulty cell. The CK3x cradle uses pogo-pin contacts that oxidise over time, and a new pack with slightly different contact plating can tip the resistance just over the dock's threshold. Remove the pack, wipe the gold contacts on both the battery and the cradle dock with a dry lint-free cloth, then reseat firmly. If the error clears, the pack is fine — the contact surface needed cleaning.
Scanner dropping wireless connection during rapid scan bursts
The CK30 draws simultaneously from the 802.11 radio and the scan trigger during a fast burst — combined inrush can momentarily sag the voltage enough to force a radio re-association. This happens most often when the pack is below 20% charge, where internal resistance rises and the cell struggles to deliver the combined load cleanly. The fix is not to run the pack below 3.6V per cell (7.2V pack total) during active wireless scanning. Charge the pack before it reaches the warning indicator, not after the radio drop has already interrupted your session.