OUWEE Replacement Battery for ASUS TUF & FX Series Laptops — B31N1726 11.4V 48Wh (Shape-A) with Protection Circuitry

OUWEE B31N1726 is a direct-fit replacement Li-ion battery designed to restore portable power to many ASUS TUF and FX-series laptops with an 11.4V, 48Wh capacity.

If your ASUS TUF or FX laptop is losing charge quickly or refuses to hold a reliable charge, this OUWEE B31N1726 replacement battery provides a tried match to the original spec—11.4 volts and 48Wh / 4240mAh—plus built-in protection circuitry and UL/CE/FCC/RoHS compliance. It’s manufactured as a brand-new cell pack with smart chips for stable current delivery and reduced self-discharge, compatible across several ASUS models and replacement part numbers.

Which ASUS laptops will this OUWEE battery work with?

This battery is made to fit multiple ASUS TUF Gaming and FX-series notebooks. It lists compatibility with model families such as FX504, FX505, FX506, FX507, FX80/86, FA506IU, FA706II and A15/A17 variants, as well as equivalent part numbers including B31N1726 and B31BN91.

• Direct fits: FX504G/FX504GE/FX504GM and FX505 series (DT/DV/DU/DY/GE/GD/GM)
• Compatible with TUF Gaming F15/F17 and some A15/FA506/A17/FA706 series
• Cross-references: B31N1726, B31BN91, 0B200-02910000, 0B200-02910200

How long will a charge last and how durable is this pack?

The OUWEE pack is rated at 48Wh (4240mAh) and is designed to provide practical runtime improvements over worn factory batteries. OUWEE specifies ≥500 charge cycles with routine use, and the built-in management electronics help prevent overcurrent, overcharge and excessive discharge.

• Rated capacity: 48Wh / 4240mAh for typical load scenarios
• Cycle life: designed for 500+ cycles under normal charging patterns
• Safety: built-in protective circuitry and compliance with UL/CE/FCC/RoHS

Is the OUWEE B31N1726 safe and supported after purchase?

Yes. OUWEE ships these batteries brand-new and applies standardized safety testing and certifications. The product is backed by a 30-day money-back period and a 12-month warranty, and the seller provides 24/7 email support for installation or compatibility questions.

• Certifications: UL, CE, FCC, RoHS compliance for safety and environmental standards
• After-sale: 30-day returns, 12-month warranty, email support through your order page
• Quality control: top circuit boards and smart chips to maintain stable current

Who is this for? If you own a compatible ASUS TUF or FX-series laptop and need to replace a failing or swollen battery, the OUWEE B31N1726 offers a cost-effective, specification-matching substitute. It’s a good choice for gamers, students, or professionals who need predictable runtime, safe charging behavior, and an easy swap that restores mobility without buying a whole laptop. Always verify your laptop’s model number or existing battery part number before ordering to ensure an exact fit.