Fancy Buying B31N1726 Laptop Battery for Asus FX/ TUF

Fancy Buying B31N1726 is a direct replacement Li‑polymer laptop battery designed to restore runtime for compatible Asus TUF and FX series laptops.

If your Asus TUF or FX laptop is losing charge quickly or won’t hold power, this B31N1726 battery provides a like‑for‑like swap with safety circuitry and OEM‑level specifications. It delivers 11.4V and 48Wh from a 3‑cell Li‑polymer pack and installs in the same housing as the original battery so you can get back to gaming, editing, or working without replacing the whole machine.

Will this battery fit my Asus FX504 or FX505 laptop?

Yes — the B31N1726 is made to match the physical and electrical specifications of many Asus TUF and FX models. Check the part numbers and model list printed on your original battery to confirm compatibility before ordering.

• Compatible part numbers: B31N1726, B31N1726-1, B31BnEH, B31Bn91, A41LK9H and variants.
• Fits models: FX80, FX86, FX504, FX505 series and TUF A15/FA506 and A17/FA706 families.
• Voltage and capacity match: 11.4V, 48Wh, 3‑cell configuration—so no reconfiguration required.

How safe and reliable is this replacement battery?

The Fancy Buying battery uses Li‑polymer cells and built‑in protection circuitry to guard against overcharge, overdischarge, short circuits and excessive temperature. Assemblies are tested to meet OEM standards and the pack is rated for many charge cycles under normal use.

• Integrated protections: overcurrent, overcharge, overdischarge and temperature control.
• Durability: designed for up to roughly 500 recharge cycles under standard conditions.
• Quality assurance: 100% new cells and circuit boards, assembled to industry specifications.

What electrical specs and features should I expect?

The pack supplies the same power profile as the original Asus battery so your laptop’s performance and charging characteristics remain unchanged. It’s optimized for low self‑discharge and efficient power delivery during everyday tasks and heavier loads like gaming.

• Battery type: Li‑polymer, Voltage: 11.4V, Capacity: 48Wh.
• Cell count: 3‑cell configuration for compact size and weight balance.
• Protection circuitry: over‑temperature and short‑circuit safeguards for safe charging.

What support and warranty come with the battery?

Fancy Buying backs the B31N1726 with a straightforward return policy and warranty, plus customer support for installation or compatibility questions. If the battery has any issues within the coverage period, the team offers a quick response channel.

• 30‑day full refund policy if you’re not satisfied.
• 12‑month warranty and responsive customer support via the product page "ASK A QUESTION" link.
• Guidance: use the product page search (CTRL+F) to verify your laptop model or part number before purchase.

Who is this for? The Fancy Buying B31N1726 battery is aimed at Asus TUF and FX series owners who want a reliable, cost‑effective replacement for an aging or failing battery. It’s suitable for gamers, students, and professionals who prefer to extend their laptop’s life rather than replace the entire machine, and for technicians who need an OEM‑compatible spare for repairs.