The HP 840 G1 Battery (CM03XL) is a genuine lithium-ion replacement battery designed specifically for HP EliteBook 840 G1 and EliteBook 850 G1 laptops. If your device no longer holds charge, shuts down quickly, or needs frequent recharging, replacing it with the CM03XL battery is the best solution. Built by HP for seamless compatibility, this battery ensures your laptop runs efficiently with stable and reliable power output.
Its 3-cell lithium-ion design offers a balance of portability and runtime, making it ideal for business users, students, and professionals who need dependable mobile power. With features like overcharge protection and a durable build, the CM03XL is a safe, long-lasting, and cost-effective replacement for your worn-out battery.
Specifications
| Feature | Details |
|---|---|
| Battery Type | Lithium-Ion (Li-ion) |
| Model Compatibility | HP EliteBook 840 G1 / HP EliteBook 850 G1 |
| Compatible Part No. | CM03XL |
| Capacity | 4000mAh – 4400mAh |
| Voltage | 11.1V |
| Cells | 3-Cell |
| Average Life | 4–6 hours (usage dependent) |
| Color | Black |
| Condition | Brand New, Original Replacement |
| Warranty | 6 to 12 Months (depending on supplier) |
Reliable Power for Everyday Use
The HP CM03XL battery restores the performance and mobility of your EliteBook 840 G1, ensuring uninterrupted work sessions. Whether you are working on spreadsheets, attending online classes, or handling presentations, it provides consistent energy for productivity.
Guaranteed Compatibility
As an original HP part, this battery integrates perfectly with your laptop’s power management system. The CM03XL communicates seamlessly with your device, ensuring accurate charge reporting, efficient charging cycles, and smooth installation without technical issues.
Lightweight and Portable Design
The 3-cell build makes this battery slim and lightweight, complementing the portability of your EliteBook. It fits snugly into your laptop without adding bulk, making it perfect for frequent travelers or professionals working on the move.
Long-Lasting Performance
With a capacity of up to 4400mAh, the CM03XL offers dependable runtime of 4–6 hours depending on usage. It maintains charge well and is designed to deliver reliable performance across hundreds of recharge cycles, reducing the need for frequent replacements.
Safety and Protection Features
The CM03XL battery includes built-in safety mechanisms to protect your laptop from overcharging, overheating, and short circuits. These features enhance durability while ensuring your laptop and data remain safe during long usage hours.
Durable and Cost-Effective
Made with high-quality lithium-ion cells, this battery is engineered for durability and consistent power delivery. Its long lifespan and reliable efficiency make it a cost-effective investment compared to cheaper, non-original alternatives.
Productivity Anytime, Anywhere
Whether you are in the office, on campus, or traveling, the CM03XL ensures your laptop remains powered and ready. It supports your mobile lifestyle by reducing downtime and enabling smooth performance wherever you go.
Conclusion
The HP 840 G1 Battery (CM03XL) is the best original replacement option to restore the functionality of your HP EliteBook. With guaranteed compatibility, strong runtime, enhanced safety features, and lightweight design, this battery ensures your laptop performs at its best. Choose the CM03XL to enjoy peace of mind, reliable energy, and productivity without interruptions.
