B31N1726 Laptop Battery for ASUS TUF FX504 FX505 A15 A17 Series – 48Wh Replacement Battery

B31N1726 Laptop Battery for ASUS TUF FX & A-Series – Reliable Power, Long Runtime

Get your ASUS TUF gaming laptop back to full power with the B31N1726 Replacement Battery, perfectly compatible with a wide range of models including ASUS FX80, FX86, FX504, FX505, A15 (FA506IU), and A17 (FA706II). Built with premium lithium-ion cells, this 48Wh battery offers stable, long-lasting performance and safe operation — ideal for gamers, creators, and professionals alike.

Engineered to meet or exceed original OEM standards, it ensures reliable charging cycles, efficient energy output, and protection from overcharge, overheating, and short-circuiting. Whether you’re upgrading or replacing your old battery, this high-quality option delivers the best balance of performance, safety, and value.

Specifications

• Model: B31N1726

• Voltage: 11.4V

• Capacity: 48Wh / 4200mAh

• Cell Type: High-grade Li-ion cells

• Compatible Models: ASUS FX80, FX86, FX504, FX504GE, FX504GM, FX505, FX505DT, FX505DY, FX505GE, FX505GD, FX505GM, A15 FA506IU, A17 FA706II series, and more.

• Replacement Part Numbers: B31BnEH, B31Bn91, A41LK9H

This B31N1726 replacement laptop battery for ASUS TUF FX504, FX505, A15 FA506IU, and A17 FA706II series is designed to restore your laptop’s original performance and mobility. With a 48Wh capacity, it provides consistent power output, extended runtime, and dependable stability for gaming, work, and everyday use. Built with high-quality lithium-ion cells and advanced safety protection, this battery ensures reliable charging cycles and long service life.

Why Buy This Battery?

• Restore full mobility to your ASUS laptop and enjoy unplugged productivity.

• Save money with a high-quality alternative to OEM replacements.

• Eco-friendly and reliable, passing strict quality control and safety standards.

• Perfect for TUF gamers, students, and professionals needing consistent performance on the go.

Compatible Models (use “Ctrl+F to find your model quickly”)

• Fit for ASUS FX80 FX80G FX80GD FX80GE FX80GM FX86 FX86FE FX86FM Series;
• Fit for ASUS TUF Gaming FX504GD FX504GE FX504GM Series;
• Fit for ASUS TUF Gaming FX505DT FX505DV FX505DU FX505DY FX505GE FX505GD FX505GM Series
• Fit for ASUS TUF Gaming A15 FA506IU Series;
• Fit for ASUS TUF Gaming A17 FA706II Series.

Replacement for Part Number:

B31N1726 / B31N1726-1 / B31BnEH / B31Bn91 / A41LK9H