FUTUROSP HT03XL Battery for HP Pavilion & 15-Series – 41.9Wh Replacement

Powerful, reliable replacement for your HP notebook

The FUTUROSP HT03XL battery is a practical replacement option for HP Pavilion and many HP 15-series laptops. With a capacity of 41.9Wh (3630mAh) and a nominal voltage of 11.55V, this 3-cell Li-ion pack is designed to balance portability with steady power. It supports up to 500 recharge cycles over its life, offering a longer-term alternative to aging OEM batteries. While real-world results vary with usage, customers often appreciate improved unplugged time and dependable startup reliability compared to older batteries.

What you get

• Li-ion battery chemistry with 41.9Wh capacity (3630mAh).
• Voltage: 11.55V; 3-cell design for a slim, compatible form factor.
• Listed to fit a wide range of HP Pavilion and 15-series models (see compatibility section for specifics).
• Safety features include over-current, over-voltage, and over-temperature protection, plus short-circuit safeguards.
• 100% new, with CE/FCC/ROHS/UKCA certifications for confidence in quality and compliance.

Designed for broad compatibility

This HT03XL/L11119-855 battery is widely compatible with models such as Pavilion 15-CS3073CL, 15-CU0058NR, 15Z-CW100, and many others in the listed family. The emphasis is on a simple swap that minimizes downtime and helps you keep working or learning without surprises.

Safety, quality, and responsible design

• 100% New parts with precise fit for HP notebooks.
• Comprehensive protection: over-current, over-voltage, over-temperature, and short-circuit safeguards.
• Compliant with major safety standards (CE/FCC/ROHS/UKCA).

Real-world use scenarios

Whether you’re commuting, teaching, or pairing a remote work setup, this battery is built to support on-the-go power. Expect steadier performance during long work sessions, classroom hours, or screen-heavy tasks, while preserving the overall health of your device by avoiding sudden shutdowns.

Installation tips

To ensure a smooth replacement, power down your laptop completely, unplug, and follow the usual safety steps for battery replacement. If you’re unsure about compatibility, consult the model list in the product details or contact the seller for guidance.