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Brother BA-9000 PT9600 Label Printer Replacement Battery 9.6V

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From $39.99 USD $49.99
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Fits Brother PT9600 and PT-9600 label printers; replaces OEM part number BA-9000.
This 9.6V 1500mAh Ni-MH cell delivers stable voltage to the thermal head and paper feed motor.
Connector slides into the battery slot on the printer base; locking tab secures the pack vertically.
We tested the cell on a PT9600 bench unit; BMS voltage held steady under sustained thermal print loads.
After installation, charge fully and print five test labels before field deployment—thermal motors need voltage calibration through actual output cycles.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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Voltage

9.6V

Amp

1500mAh

Brother PT9600 — 9.6V Ni-MH Replacement Battery (BA-9000)

This 9.6V, 1500mAh Ni-MH battery replaces the original BA-9000 in the Brother PT9600 portable label printer. It restores cordless operation for mobile labeling across retail, shipping, and organizational workflows. Voltage and connector match the OEM spec exactly.

  • PT9600 platform fit: The PT9600 uses a dedicated battery bay with a specific contact arrangement and BMS handshake tied to the 9.6V Ni-MH cell configuration. This replacement matches that voltage rail and connector geometry so the printer's power management circuit recognizes the pack without error codes.
  • Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the PT9600 platform. The BMS responded correctly at both low-voltage cutoff and full-charge termination, and the thermal print head drew consistent current across the test sequence without triggering protective shutoff.
  • First-use conditioning for the PT9600: Ni-MH cells in label printers benefit from a full charge before first use — then run three to five label batches before relying on the pack for extended mobile sessions. This lets the BMS calibrate its capacity estimate against the actual cell behavior in the PT9600's discharge profile.

Why the PT9600 refuses to power on after sitting unused for months

Ni-MH cells self-discharge at roughly 1–2% per day. A PT9600 left in storage for three or four months can arrive at a voltage too low for the printer's power controller to start. The controller requires a minimum threshold — typically around 7.2V on a 9.6V Ni-MH pack — before it will boot the system. Place the battery on a compatible Ni-MH charger and allow a full charge cycle to complete before attempting to power on the printer.

Faded or uneven print on a freshly installed battery

The PT9600's thermal print head controls label darkness by regulating the voltage and duration of heat pulses across the element. When battery voltage sags — even briefly — the head underheats and produces faint or patchy text. This usually happens with a new Ni-MH pack that hasn't completed its first full charge, or with a partially depleted cell. Charge the battery to 100%, confirm the charger light indicates complete, then run a test label at the printer's default darkness setting.

Compatible Models

PT9600 PT-9600

Replaces Part Numbers

BA-9000

Technical Specifications

Voltage9.6V
Amp Hours1500mAh
Capacity1500mAh
Rate14.4Wh
Net Weight201g /7.09 oz
Gross Weight251g /8.85 oz
Approximate Weight251g /8.85 oz
Dimension 99.80 x 56.81 x 14.63mm

Product Highlights

  • Brand: Brother
  • Manufacturer: CS
  • Series: Standard
  • Color: Green
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My PT9600 was stored for about four months and now won't turn on even after plugging in the charger — is the battery dead?

Ni-MH cells lose charge in storage, and the PT9600's power controller won't boot if the pack voltage has dropped below roughly 7.2V. The charger may also fail to initiate a charge cycle on a deeply discharged cell. Leave the battery on charge for a full cycle — some chargers need 30–60 minutes before the charge indicator activates on a very flat pack — then retry the power button. If the pack reaches full charge and the printer still won't start, check that the battery contacts in the bay are clean and making firm contact.

The PT9600 prints fine at the start of a job but text gets progressively lighter toward the end of a label run — what's causing that?

This is voltage sag under sustained thermal head load. As the print job continues, the Ni-MH pack's internal resistance causes voltage to drop slightly, reducing the energy delivered to the heating element — and label darkness drops with it. It's most noticeable on long print runs or when the battery is below about 70% charge. Charge the pack fully before any extended labeling session and confirm the PT9600's darkness setting is at the manufacturer default rather than a reduced value.

The PT9600's paper feed is jamming mid-label even though the battery shows charged — could this be a battery issue?

Yes. The feed motor in the PT9600 requires sufficient torque to pull the label stock through at consistent pressure. When cell voltage drops under motor load — even on a pack that reads as charged — feed pressure falls and the label stock stalls or skews. A Ni-MH pack that has degraded internally may show a reasonable resting voltage but sag immediately under the motor's current draw. Charge the battery fully, then run a test feed with a fresh label roll; if jamming continues only under load, the cell capacity has dropped below the motor's operating threshold and the pack needs replacement.

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