Honeywell TXE TECTON MX7 Replacement Battery 7.4V 2600mAh

Honeywell TXE TECTON MX7 — 7.4V Li-ion Replacement Battery (159904-0001)

This 7.4V, 2600mAh Li-ion battery replaces the original pack in the Honeywell TXE TECTON MX7 mobile data terminal. It covers OEM part numbers 159904-0001, 163467-0001, 161772-0001, MX7A380BATT, MX7382BATT, MX7392BATT, and MX7394BATT. The MX7 is a rugged handheld scanner used in warehouse picking, inventory control, and logistics operations.

• MX7 platform fit: All listed OEM part numbers run the same 7.4V rail, use the same connector pinout, and communicate through the same BMS handshake the MX7 expects at power-on. Any pack on this list installs and registers correctly.
• Bench tested on actual hardware: We cycled this pack through scan-trigger and Wi-Fi radio loads simultaneously — the combined inrush that typically trips an underspec BMS. The protection circuit held voltage above the MX7's cutoff threshold throughout the test, and the pack resumed charging normally in the cradle after each discharge.
• First-shift preparation for the MX7: After installing, place the scanner in its cradle for a full charge cycle before heading to the floor. Scan-trigger inrush current is highest when the cell is near minimum state of charge, and a fully charged pack prevents false BMS trips on the first pick run of the shift.

Cradle showing a charging error on a new MX7 pack

The MX7 cradle reads the battery over a dedicated contact strip on the base of the pack. If any of those contacts have oxidation or residue from handling, the dock interprets the high contact resistance as a fault and flags a charging error — even though the pack itself is fine. Wipe the contact strip on the battery with a dry cloth and inspect the cradle's spring pins for debris before reseating. If the error clears on the second seating, the pack is good.

MX7 losing wireless connection during back-to-back scan bursts

Rapid scanning pulls inrush current from the laser or imager at the same moment the Wi-Fi radio is polling the network. The combined draw creates a brief voltage sag on the 7.4V rail. If the pack's internal resistance is high — either from age or a deeply discharged new pack — that sag crosses the MX7's radio hold-up threshold and the wireless stack drops. Charge the pack to full before the shift, and check that cell voltage reads at least 7.2V under load before logging the unit into a picking job.