Honeywell RP2 Replacement Battery 7.4V 3400mAh Li-ion

Honeywell RP2 Impressora Portatil — 7.4V Li-ion Replacement Battery (550052-000)

This 7.4V, 3400mAh lithium-ion battery replaces part number 550052-000 (also 50133975-001) in the Honeywell RP2 portable thermal printer. The RP2 is a handheld receipt and label printer used in retail, field sales, and logistics workflows. When the original cell degrades, print jobs fail mid-run or the printer refuses to power on — this battery restores full operation.

• RP2 platform fit: Both OEM part numbers 550052-000 and 50133975-001 map to the same 7.4V cell format used in the RP2. The connector pinout and BMS communication protocol are identical across these part numbers — no firmware mismatch or handshake failure on swap.
• Bench tested on actual hardware: We cycled this battery through the RP2's paper feed and thermal head activation sequence. The BMS held stable current delivery across both the motor draw spike on feed engagement and the sustained thermal head load during a full label run.
• RP2 first-deploy sequence: After installing, charge fully and print five test labels before deploying in the field. The RP2's paper feed motor draws a brief surge on each feed cycle — running these prints lets the BMS log the correct current profile for the new cell and prevents false low-battery cutoffs during the first shift.

Bluetooth dropping mid-print job on the RP2

The RP2 runs its Bluetooth radio and thermal head simultaneously during a print job. At lower charge levels, the combined current draw causes a voltage sag that drops the radio below its minimum operating threshold — the connection drops before the job completes. This is not a pairing issue or app fault. Keep the battery above 6.8V during active print sessions; charge before deploying if the printer has sat idle for more than a week.

Faded or uneven print output on the RP2

The RP2's thermal head reaches target temperature by drawing consistent current through its heating elements. A degraded or partially discharged battery delivers unstable voltage, causing the head to undershoot temperature — the result is pale, patchy, or barcodes that scanners reject. Swapping to a fully charged replacement and running a test print confirms whether the issue is battery-side. If print density normalises immediately on a full charge, the old cell has lost capacity and needs replacement.