BTI QK641AA-BTI 14.4V 81Wh Li-Ion Battery for HP EliteBook

The BTI QK641AA-BTI 14.4V 81Wh Li-Ion Battery is a high-performance replacement power solution designed to keep HP EliteBook laptops running longer between charges. This premium battery is crafted for reliability, longevity, and safe operation, ensuring you stay productive during long work sessions, intense travel schedules, and demanding presentations. Compatible with a wide range of EliteBook models—including the EliteBook 8560W, EliteBook E8560P, EliteBook 8570W, EliteBook 8760W, and EliteBook 8770W—this battery delivers consistent power to power users, professionals, and teams who rely on their laptops to perform at peak levels. Built by BTI, a trusted name in laptop power solutions, this 81Wh Li-Ion battery is engineered to meet or exceed OEM performance, providing a seamless replacement experience that preserves your device’s portability and efficiency.

• Long-lasting power for professional workloads: With an 81Wh capacity, this BTI battery extends your laptop’s runtime beyond standard replacement packs, letting you complete complex spreadsheet models, data analysis, video conferencing, and design work without frequent recharges. The 14.4V Li-Ion design is optimized for HP EliteBook power management, delivering steady current delivery that supports demanding applications, multitasking, and on-the-go productivity. Users who travel or work remotely will notice fewer interruptions, enabling longer sessions between plug-ins and reducing downtime caused by battery anxiety.

• Broad compatibility across HP EliteBook lines: This BTI QK641AA-BTI battery is designed to fit a broad spectrum of EliteBook notebooks, including the 8560W, E8560P, 8570W, E8560W, 8760W, and 8770W models. Its form factor, connector alignment, and overall dimensions are engineered to snap into place securely, matching OEM housings for a clean, professional look. Whether you’re upgrading an older EliteBook or replacing a worn-out battery, this model delivers a dependable, plug-and-play experience that keeps your device's weight balanced and its center of gravity stable for comfortable use on the go.

• Safety and reliability you can trust: BTI emphasizes safety in every battery, incorporating robust protection against overcharging, short circuits, and thermal overload. The 14.4V Li-Ion chemistry is selected for a balance of performance and longevity, reducing memory effects and delivering consistent cycle life when used with compatible HP EliteBook charging systems. Built to strict quality controls, this battery minimizes the risk of swelling, leakage, or unexpected shutdowns, helping you maintain data integrity and device reliability in the field.

• Easy replacement and maintenance for busy professionals: Replacing a battery on an HP EliteBook is straightforward, and this BTI unit is designed to slot into the device’s battery bay with minimal effort. Its sturdy construction and reliable cell technology mean you can rotate batteries with minimal downtime, making it ideal for IT departments managing multiple laptops or for individuals who rely on spare packs during long trips. The battery’s design supports fast charging cycles without compromising longevity, so you can recharge efficiently between tasks and keep your workflow uninterrupted.

• Value, efficiency, and sustainability for everyday use: A higher-capacity replacement battery translates into fewer charging sessions per day, which can contribute to lower electricity usage over time and a smaller carbon footprint in a busy office environment. The BTI QK641AA-BTI battery provides strong value by delivering extended runtime, dependable performance, and a trusted replacement option for HP EliteBook owners who demand consistency across their hardware. Its compatibility with multiple EliteBook generations ensures you can repurpose or reuse the battery across devices you already own, improving overall battery lifecycle management and reducing waste.

Technical Details of BTI QK641AA-BTI 14.4V 81Wh Li-Ion Battery

• Voltage: 14.4V
• Capacity: 81Wh
• Chemistry: Li-Ion
• Cell configuration: Typically multi-cell (commonly 6-cell) for extended run time
• Model compatibility: HP EliteBook models including 8560W, E8560P, 8570W, E8560W, 8760W, 8770W
• Part numbers: BTI QK641AA-BTI, 632114-421, HSTNN-LB2Q, 632425-001, 632427-001, VH08XL
• Type: Replacement Li-Ion battery
• Placement: Internal battery bay, compatible with listed EliteBook configurations
• Brand: BTI

how to install BTI QK641AA-BTI 14.4V 81Wh Li-Ion Battery

Preparation: Ensure your HP EliteBook is powered off and unplugged from any power source. If you recently used the device, allow a moment for components to cool and avoid static discharge by touching a grounded metal surface before handling the battery bay area.

Remove the old battery: Locate the bottom battery cover on your EliteBook, then locate the release latches or screws securing the existing battery. Gently disengage the latches or remove the screws as required, keeping track of any small hardware. Carefully slide the old battery out of the compartment, taking care not to bend any connectors or cables.

Install the new BTI battery: Align the BTI QK641AA-BTI battery with the connector and contact points inside the bay. Slide it into place until it sits flush with the device chassis. Re-engage the battery latches or reinsert screws to secure the battery firmly. Confirm that the battery is seated correctly and there is no movement when gently wiggled.

Power up and verify: Reconnect the charger and power on the laptop. If prompted, perform any on-screen battery calibration steps recommended by the EliteBook operating system. Allow the battery to reach a full charge and then operate the device to verify runtime and performance. It’s a good practice to perform a complete discharge and recharge cycle once or twice after installation to optimize battery management.

Maintenance tips: Keep the device in a cool, ventilated area during operation to maximize battery life. Avoid exposure to extreme temperatures and direct sunlight. Regularly update the system BIOS and power management drivers to ensure optimal compatibility with new battery firmware and energy-saving features.

Frequently asked questions

• Q: Is the BTI QK641AA-BTI 14.4V 81Wh Li-Ion Battery compatible with all HP EliteBook models?

  A: The battery is designed for a broad range of EliteBook models, including but not limited to 8560W, E8560P, 8570W, E8560W, 8760W, and 8770W. Always verify model compatibility with your specific notebook revision before purchase.

• Q: What runtime can I expect with this 81Wh battery?

  A: Runtime varies with usage, screen brightness, and running applications. An 81Wh capacity typically provides extended run time compared to standard replacement packs, making it well-suited for professional tasks, presentations, and travel where access to power is limited.

• Q: How do I know when it’s time to replace the battery?

  A: Indicators include noticeably shorter unplugged runtime, unexpected shutdowns, and the battery failing to reach a full charge. If you observe rapid discharge or overheating during normal use, consider replacing with a compatible battery like the BTI QK641AA-BTI.

• Q: Will this battery affect my laptop warranty?

  A: Replacement batteries from reputable brands like BTI are commonly used as third-party replacements. Check your device’s warranty terms and consult HP or your warranty provider for coverage details related to third-party components.

• Q: How should I dispose of an old battery?

  A: Follow local regulations for battery recycling. Many communities offer designated drop-off points for Li-Ion batteries. Recycling helps minimize environmental impact and promotes sustainable electronics use.