Honeywell CT47 Replacement Battery CT4X-BTEC 3.87V 7600mAh

Honeywell CT47 / CT45 — 3.87V Li-ion Replacement Battery (CT4X-BTEC)

This is a 3.87V, 7600mAh Li-ion battery for the Honeywell CT47 and CT45 mobile computers. Both devices run on the same battery platform, sharing the CT4X-BTEC part number and the same connector and BMS handshake. It replaces OEM part numbers CT4X-BTEC and 318-055-026.

• CT47 and CT45 shared battery platform: Both models use the same 3.87V cell configuration, connector pinout, and BMS communication protocol. A single battery revision covers both devices without modification.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the CT47 platform. The BMS negotiated correctly with the device, reported state of charge accurately in the status bar, and held the charge floor without triggering low-voltage cutoff early.
• First-shift cradle protocol: After installing this pack, seat the scanner in its charging cradle and complete one full charge cycle before taking it onto the floor. The scan trigger inrush current peaks when the cell is near minimum — a fully charged cell on the first shift prevents false BMS trips during high-frequency scan bursts in pick-and-pack operations.

Cradle showing charging error on a new CT4X-BTEC pack

A charging error on the dock with a new pack is almost always a contact resistance issue, not a faulty battery. The CT47 cradle uses spring-loaded contacts that can accumulate dust and oxidation from warehouse environments. Wipe the gold contacts on both the battery base and the cradle with a dry cloth, then reseat the device firmly until you hear the click. If the error clears within 30 seconds of reseating, the contacts were the cause — not the cell.

Scanner losing wireless connection during rapid scan bursts

During a high-frequency scan burst, the CT47 draws current simultaneously from the imager and the wireless radio. If the cell voltage sags under that combined load, the radio stack can drop its connection before the device shows a low-battery warning. This is more common when the pack is between 20–30% charge. Keep the pack above 30% during active shifts, and check that the battery percentage readout in device settings is not lagging — a stale BMS reading can mask real voltage sag until the radio drops.