The HP 840 G3/G4 Battery (CS03XL) is an original lithium-ion replacement battery designed for the HP EliteBook 840 G3 and EliteBook 840 G4 laptops. If your device has started shutting down unexpectedly, loses power quickly, or requires constant charging, replacing the worn-out battery with the CS03XL is the best solution.
Engineered by HP to match the performance of the original factory battery, the CS03XL offers reliable runtime, durability, and full compatibility. Its high-quality cells provide safe and consistent energy output, while its slim design ensures it fits seamlessly into your laptop without adding bulk.
Whether you are a business professional, student, or casual user, this battery gives you dependable power for work, study, and entertainment.
Specifications
| Feature | Details |
|---|---|
| Battery Type | Lithium-Ion (Li-ion) |
| Model Compatibility | HP EliteBook 840 G3 / HP EliteBook 840 G4 |
| Compatible Part No. | CS03XL |
| Capacity | 4000mAh – 4400mAh |
| Voltage | 11.4V |
| Cells | 3-Cell |
| Average Life | 4–6 hours (depending on usage) |
| Color | Black |
| Condition | Brand New, Original Replacement |
| Warranty | 6 to 12 Months (supplier dependent) |
Reliable Power for EliteBook Users
The CS03XL battery ensures your EliteBook 840 G3 or G4 runs efficiently throughout the day. It provides steady performance for tasks like video conferencing, document editing, online research, or multimedia use without frequent recharging.
Guaranteed Compatibility
Designed by HP, the CS03XL communicates seamlessly with your laptop’s power management system. It installs easily, displays accurate battery status, and charges efficiently. Users can expect a hassle-free replacement with 100% compatibility.
Lightweight and Portable Design
This 3-cell battery is slim and lightweight, making it ideal for professionals and students who carry their laptops often. It fits neatly into the EliteBook without altering the device’s portability, ensuring you stay mobile.
Long-Lasting Battery Life
With a rated capacity of up to 4400mAh, the CS03XL delivers dependable runtime of 4–6 hours per charge, depending on your workload. It supports multiple recharge cycles while maintaining consistent power delivery, extending your laptop’s lifespan.
Safety and Protection Features
The CS03XL is built with HP’s safety standards to protect against overheating, overcharging, and electrical malfunctions. These features safeguard both the laptop and user, ensuring safe operation during heavy workloads or long sessions.
Durable and Cost-Effective Replacement
Manufactured using premium lithium-ion cells, the CS03XL provides long-term reliability compared to third-party alternatives. Investing in an original replacement reduces the risk of poor performance or early battery failure, making it a cost-effective choice.
Ideal for Work and Travel
Whether you are in meetings, on the move, or working remotely, this battery supports productivity without interruption. It ensures your HP EliteBook 840 G3/G4 is always ready when you need it, eliminating downtime caused by a weak battery.
Conclusion
The HP 840 G3/G4 Battery (CS03XL) is the best original replacement option for users looking to restore their laptop’s mobility and reliability. With long-lasting runtime, lightweight design, built-in safety, and guaranteed compatibility, this battery ensures your EliteBook performs at its peak. Upgrade today with the CS03XL and enjoy dependable power anywhere, anytime.
