Rate this product 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
