BTI R73TC-BTI 11.4V 54WHR LI-ION BATTERY 09HKT5, 9HKT5, CN-09HKT5, R73TC LATITUDE 3340, LATITUDE 3440, LATITUDE 3540, LATITUDE 5340, LATITUDE 5340 2-IN-1, LATITUDE 5440, LATITUDE 5540, PRECISION 3480, PRECISION 3580

The BTI R73TC-BTI 11.4V 54Wh Li-Ion Battery is the ultimate replacement power solution for Dell Latitude and Precision laptops. Engineered to meet the rigors of modern computing, this high-performance battery delivers dependable uptime, extended run times, and reliable power when you need it most. Whether you’re a professional on the move, a student juggling assignments, or a creator editing on the go, this battery keeps your Dell machine ready to work, play, and create without frequent recharges. Designed to fit a broad range of Dell models—Latitude 3340, 3440, 3540, 5340, 5440, 5540, and Latitude 5340 2-in-1—as well as Precision 3480 and 3580, the BTI R73TC-BTI is built to align with your device’s form factor and electrical requirements for a seamless, plug-and-play experience. With a robust 11.4V Li-ion chemistry and a generous 54Wh capacity, you gain longer run times, improved reliability, and peace of mind knowing your power source is engineered for safety and longevity.

• Premium compatibility and performance: Specifically engineered to fit Dell Latitude 3340, 3440, 3540, 5340, 5440, 5540 and Latitude 5340 2-in-1, plus Precision 3480 and 3580. The BTI R73TC-BTI battery mirrors the original dimensions and electrical interface, ensuring flawless plug-and-play replacement without BIOS or power management issues. This means you can swap in seconds and resume work without compatibility concerns.
• High-capacity, dependable power: With 11.4V and 54Wh, this battery delivers longer run times between charges, helping you stay productive through longer meetings, flights, and remote work sessions. The Li‑ion chemistry provides stable voltage delivery across cycles, reducing the need for frequent recharging and supporting smooth performance even on intensive tasks.
• Advanced safety features: Built-in protections guard against overcharge, over-discharge, short circuits, and overheating. These safeguards help protect both the battery and your laptop’s delicate power management system, while maintaining efficiency and reducing the risk of unexpected shutdowns. Safety-first design means you can rely on steady power in diverse environments.
• Quality construction and reliability: A 6-cell Li‑ion configuration delivers consistent energy density and efficient thermal management. The BTI R73TC-BTI is factory-tested to ensure safe installation, stable voltage output, and long-term durability. Expect steady, dependable performance across daily tasks, multimedia, and professional workloads as you travel or work away from a desk.
• Simple, risk-free replacement: This battery is designed as a straightforward swap for the original unit, with part numbers CN-09HKT5 and 9HKT5 corresponding to common Dell refurbishments. It ships as a new, ready-to-install battery and supports safe end-of-life disposal according to local guidelines, so you can upgrade with confidence and ease.

Technical Details of BTI R73TC-BTI

• Model: BTI R73TC-BTI
• Voltage: 11.4V
• Capacity: 54Wh
• Chemistry: Li-ion
• Cells: 6-cell design
• Compatibility: Dell Latitude 3340, 3440, 3540, 5340, 5340 2-in-1, 5440, 5540; Latitude 5340 2-in-1; Precision 3480, 3580
• Replacement for: R73TC
• Part numbers: CN-09HKT5, 9HKT5

How to Install BTI R73TC-BTI

• Power off the laptop and remove the charger. For safety, disconnect all external devices.
• Place the laptop face down and locate the back panel screws. Use the appropriate screwdriver to remove the back panel and expose the battery bay.
• Carefully disconnect the old battery’s connector from the motherboard. If needed, release any locking tabs while removing the old unit.
• Align the BTI R73TC-BTI replacement with the battery bay, connect the battery connector securely, and position the battery so it sits flush in its compartment.
• Replace the back panel, tighten the screws, reconnect the charger, and power on the laptop to verify proper boot-up and battery recognition.

Frequently asked questions

• Q: Is the BTI R73TC-BTI compatible with my Dell Latitude or Precision model?
  A: Yes. This battery is designed to fit Dell Latitude models 3340, 3440, 3540, 5340, 5440, 5540, and Latitude 5340 2-in-1, as well as Precision 3480 and 3580 series. Always verify that your current battery model or connector matches CN-09HKT5/9HKT5 variants for best results.
• Q: What is the capacity and voltage of this battery?
  A: It is an 11.4V lithium-ion battery with a 54Wh capacity, providing longer run times between charges for everyday productivity and extended work sessions.
• Q: Are there safety protections built into this battery?
  A: Yes. The BTI R73TC-BTI includes built-in protections against overcharge, over-discharge, short circuit, and overheating to help protect your laptop and extend battery life.
• Q: Does this battery come pre-tested and ready to install?
  A: Yes. The battery is factory-tested and designed as a straightforward replacement for the original battery, with plug-and-play compatibility for the listed Dell models.
• Q: What about warranty and recycling?
  A: Warranty terms vary by seller; check the product listing for details. At end of life, follow local e-waste and battery recycling guidelines to dispose of the battery responsibly.