BTI HP-ZBOOK15 Replacement Battery – 28-Cell Li-Ion, 14.4V 72Wh for HP ZBook 15/17 (AR08/AR08XL/HSTNN-C77C/HSTNN-C76C/E7U26AA/E7U26UT, 707615-241, 708456-001)

Power your HP ZBook on the move with a trusted BTI replacement battery. This 28-cell Li-Ion pack is engineered to fit HP ZBook 15 and ZBook 17 series, including ZBook 15 G1/G2 and ZBook 17 G1/G2, delivering reliable run time and consistent performance when you need it most. With a nominal voltage of 14.4V and an energy capacity of 72Wh (5200mAh), this battery provides substantial endurance for demanding workflows like CAD design, video editing, data analysis, and multi‑document projects. It’s designed to mirror the dimensions and connector of the original battery so the swap is straightforward and secure, allowing you to return to work quickly without adapters or modifications. Built to meet or exceed OEM specifications, this BTI battery emphasizes safety, durability, and long-term reliability, backed by an 18‑month warranty from the date of purchase.

• Compatibility and fit: Specifically designed to replace batteries for HP ZBook 15 and ZBook 17 mobile workstations (including ZBook 15 G1/G2 and ZBook 17 G1/G2) with common part numbers such as AR08, AR08XL, HSTNN-C77C, HSTNN-C76C, E7U26AA, E7U26UT, 707615-241, 708456-001, 708455-001, 707615-121, 707614-121, and related 707615-series identifiers. This ensures a seamless replacement that preserves original form factor, fit, and connector alignment.
• High energy density for longer work sessions: The 28-cell Li‑Ion configuration delivers 72Wh of energy at 14.4V, equating to approximately 5200mAh. This combination provides extended uptime for professionals who rely on their ZBook for long days on site, in the field, or during extended CAD sessions without frequent recharges.
• Safety, reliability, and quality: Manufactured to meet stringent safety standards, this BTI battery includes robust protection against common hazards such as overcharge and short circuits, along with reliable thermal management. The premium cell construction supports stable voltage delivery, helps maintain performance across charging cycles, and minimizes risk during heavy workloads.
• Easy installation and plug‑and‑play performance: Designed to mirror the original battery’s dimensions and connector, installation requires no adapters or modifications. Simply replace the old pack with the BTI battery, reconnect, and secure the bottom cover. Many users report a quick calibration period as the new battery integrates with the notebook’s power management system.
• Warranty and support for peace of mind: This replacement battery is backed by an 18‑month warranty from the date of purchase, ensuring coverage for manufacturing defects and performance concerns. Customer support is available to assist with installation tips, compatibility questions, and usage guidance to maximize run time and battery longevity.

Technical Details of BTI HP-ZBOOK15 Battery

• Voltage: 14.4V
• Capacity: 5200mAh (72Wh)
• Cell configuration: 28 cells
• Chemistry: Li‑Ion
• Compatibility: HP ZBook 15, HP ZBook 15 G1, HP ZBook 15 G2, HP ZBook 17 G1, HP ZBook 17 G2
• Part numbers and identifiers: AR08, AR08XL, HSTNN-C77C, HSTNN-C76C, E7U26AA, E7U26UT, 707614-121, 707615-121, 707615-141, 707615-221, 707615-241, 708455-001, 708456-001
• Warranty: 18 months from date of purchase

How to Install BTI HP-ZBOOK15 Battery

• Power down the HP ZBook, unplug from any power source, and close the lid. Ensure the workspace is static-free and you are grounded before handling the battery.
• Flip the laptop over and locate the bottom cover screws. Remove the screws and carefully lift the bottom cover to expose the internal components and the battery bay.
• Locate and disconnect the battery connector from the motherboard. If there is a retention bracket or screws securing the battery, remove them and carefully lift the old battery from its bay.
• Align the new BTI battery with the bay, ensuring the connector lines up with the motherboard socket. Connect the battery cable, secure any retention brackets or screws, and confirm the battery sits firmly in place without wiggling.
• Reattach the bottom cover and screws, reconnect power, and power on the notebook. Allow the new battery to initialize and calibrate with a full charge cycle before performing demanding tasks to optimize accuracy in power reporting.

Frequently Asked Questions

• Q: What models is this battery compatible with? A: It is designed for HP ZBook 15 and HP ZBook 17 mobile workstations, including ZBook 15 G1/G2 and ZBook 17 G1/G2, using common HP part numbers such as AR08, AR08XL, HSTNN-C77C, HSTNN-C76C, E7U26AA, and E7U26UT, along with 707615-241 and 708456-001 identifiers where applicable.
• Q: What is the energy capacity and voltage? A: The battery provides 14.4V with a capacity of 72Wh (5200mAh).
• Q: How long will this battery last between charges? A: Run time depends on usage, workload, and settings. Professional workloads such as CAD, 3D rendering, and large document processing will consume more power, while lighter tasks may extend uptime. To maximize longevity, follow best practices for power management and calibrate the battery after installation.
• Q: What is the warranty on this battery? A: The BTI HP-ZBOOK15 replacement battery comes with an 18‑month warranty from the date of purchase.
• Q: Is installation difficult? A: Installation is designed to be a straightforward replacement with the same form factor and connector as the original battery. By following the steps above, most users can perform the swap with minimal downtime.