Printek MT2 Replacement Battery 7.4V 2600mAh 91304

Printek MT2 / MTP300 Series — 7.4V Li-ion Replacement Battery (91304)

This 7.4V, 2600mAh Li-ion battery replaces OEM part 91304 and 91852 in the Printek MT2, MT3-II, MTP300, and MTP400 portable thermal printers. These are compact mobile printers used in field operations for receipt and label output. Voltage and capacity match the original cell exactly — no firmware modification required.

• MT2, MT3-II, MTP300, MTP400 shared platform: These models share the same 7.4V battery rail, connector pinout, and BMS handshake protocol. One cell fits the full line because the charge management circuitry is identical across this printer family.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on an MT2 unit. The BMS accepted the cell without fault flags, current draw during thermal head activation stayed within spec, and paper feed motors ran at correct torque throughout the test cycle.
• First-deploy print sequence: After installing and charging fully, print five test receipts before deploying the unit in the field. The paper feed motor draws a brief current spike on each print job — running this sequence confirms the BMS current profile is correctly set for the new cell and prevents false low-battery cutoffs on the first real job.

Voltage sag at the thermal head during high-density label runs

The thermal print head in the MT2 and MTP300 draws a sharp current spike when printing dense barcodes or full-width graphics. An aged or partially charged cell cannot sustain the voltage under that load, causing the BMS to throttle output mid-print. The result is faded lines or incomplete label output even when the battery indicator shows a partial charge. Keep the cell above 7.0V during active label runs to avoid this drop-out condition.

Bluetooth dropping mid-job after replacing the battery

The MT2's wireless radio shares the same power bus as the print engine. When battery voltage sags below the radio's minimum operating threshold during a simultaneous print-and-transmit event, the Bluetooth stack drops the connection before the print job completes. This is not a pairing fault — it is a voltage event. Charge the replacement cell to 8.4V (full charge) before first use and confirm the radio stays connected through a full label batch before field deployment.