BTI 800513-001-BTI 11.4V 46Wh Li-Ion Replacement Battery for HP EliteBook 745 G3, 755 G3, 840 G3, 850 G3

Power your HP EliteBook with confidence using the BTI 800513-001-BTI 11.4V 46Wh Li-Ion battery. This high-performance replacement battery is designed to deliver consistent, reliable power for today’s on-the-go professionals. Built to tight compatibility standards, it fits seamlessly into EliteBook 745 G3, 755 G3, 840 G3, and 850 G3 models, offering an excellent balance of run time, safety, and durability. Whether you’re traveling, presenting, or simply working remotely, this battery is engineered to keep you productive without interruption.

• Compatibility and fit: Specifically engineered as a 3-cell, 11.4V Li-Ion replacement for the HP EliteBook family, including 745 G3, 755 G3, 840 G3, and 850 G3 laptops. The BTI 800513-001-BTI provides a snug, OEM-style fit with the same connector layout and mounting points as the original battery, ensuring easy installation and reliable operation. Its compact, lightweight design reduces weight without sacrificing performance, making it an ideal upgrade for professionals who demand mobility and power in one package.
• Robust capacity for longer work sessions: With a capacity of 46Wh, this battery offers extended run time to help you conquer long workdays, video conferences, design sessions, and field work without frequent recharges. Real-world uptime varies with usage patterns, but you can expect meaningful improvements in daily productivity compared to older or depleted cells. The 11.4V nominal rating ensures stable voltage delivery to match the laptop’s power requirements, supporting sustained performance during demanding tasks.
• Safety-first design and reliability: The BTI replacement battery is built with multiple protection features to guard against common battery risks. Integrated safeguards include short-circuit protection, overcharge protection, and temperature monitoring, all designed to prevent damage to your laptop and to maximize the battery’s lifespan. You get a safer, more dependable power source that supports frequent travels and demanding workloads while maintaining battery health over many charge cycles.
• Effortless replacement and maintenance: The BTI 800513-001-BTI is designed for straightforward installation, often requiring no special tools beyond what you already use for routine maintenance. It’s a plug-and-play option for compatible EliteBook models, enabling quick replacement if you’re upgrading or reviving a fatigued battery. After installation, a brief calibration cycle helps the battery learn your device’s discharge characteristics, optimizing runtime and accuracy of remaining battery life indicators.
• Value, compatibility, and trusted quality: As a cost-effective, high-quality replacement, this BTI battery provides a reliable alternative to OEM options. It’s built to meet stringent quality standards and tested for compatibility with multiple HP EliteBook configurations. For professionals who depend on steady, portable power, this battery delivers dependable performance while helping you protect your productivity budget and reduce downtime caused by power issues.

Technical Details of BTI 800513-001-BTI 11.4V 46Wh Li-Ion Battery

• Battery type: Lithium-ion (Li-Ion), 3-cell configuration
• Voltage: 11.4V (nominal)
• Capacity: 46Wh
• Chemistry: Li-Ion for reliable, compact energy delivery
• Compatibility: HP EliteBook 745 G3, 755 G3, 840 G3, 850 G3 (and other HP EliteBook models that use a 3-cell 11.4V battery with similar connectors)
• Part numbers and references: BTI 800513-001, with cross-reference to related SKUs and model identifiers such as 800231-141, CS03XL, HSTNN-UB6S, CS03, ELITEBOOK series companions
• Form factor: Slim, 3-cell profile designed to fit standard EliteBook battery bays without obstructing components or cooling pathways
• Safety and compliance: Built-in protection circuitry for overcharge, over-discharge, short-circuit, and temperature control to maintain device safety and battery longevity

How to install BTI 800513-001-BTI 11.4V 46Wh Li-Ion Battery

• Power down your HP EliteBook and unplug all cables before beginning the replacement process.
• Close the lid and place the laptop on a clean, stable surface. Flip the device over to access the bottom panel and remove the battery cover or service door according to your model’s design.
• Carefully disconnect the existing battery connector from the motherboard, keeping fingers away from the surrounding components to prevent static discharge. Remove the old battery from its bay.
• Align the new BTI battery with the battery bay, ensuring the connector matches the motherboard socket. Gently insert and secure the connection, then reattach the battery within the bay and replace the bottom cover.
• Power on the laptop and allow the battery to calibrate. For best results, perform a full charge to 100% and complete a discharge to a low level once or twice to help the system learn the new battery’s discharge profile.

Frequently asked questions

• Q: Is the BTI 800513-001-BTI an original HP battery?
  A: This BTI battery is a high-quality replacement designed to be compatible with HP EliteBook models. It provides similar performance and fits the specified models, delivering reliable power when OEM options are unavailable or cost-prohibitive.
• Q: What is the expected runtime with this 46Wh battery?
  A: Runtime depends on usage. Light tasks like web browsing and document editing will yield longer runtimes, while resource-intensive activities such as video editing or gaming will reduce this time. In typical office use, you can expect several hours of productive work per charge depending on settings and running applications.
• Q: Will this battery work with my HP EliteBook 745 G3, 755 G3, 840 G3, or 850 G3?
  A: If your laptop uses a 3-cell, 11.4V Li-Ion battery with a compatible connector layout, it should fit and function correctly. Always verify the model number and battery specifications against your device’s service manual to ensure compatibility.
• Q: How should I maintain and extend the life of this battery?
  A: To maximize longevity, avoid leaving the battery at extreme temperatures for extended periods. Keep the device in moderate ambient conditions, perform occasional calibration cycles, and avoid complete discharges on a regular basis. When not in use, store the battery at roughly 40–60% charge if you won’t be using the laptop for an extended period.
• Q: Is installation safe for non-professionals?
  A: Replacing a laptop battery is a relatively safe procedure if you follow proper anti-static precautions and device-specific guidance. If you’re uncertain, consult a professional technician or refer to your device’s service handbook. Always disconnect power and power down fully before attempting replacement.