ASUS B31N1726 Replacement Laptop Battery | 11.52V 48Wh for VivoBook 15 X510 S510 F510 & TUF Gaming FX504 FX505 FX80 FX86 Series
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🔋 ASUS B31N1726 / B31BN91 — covers two distinct product lines — VivoBook 15 X510/S510/F510 (UA/UF/UQ/UN) AND TUF Gaming FX504GE/GM, FX505DT/DY, FX80GD/GE/GM, FX86FE/FM series
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⚡ 11.52V / 48Wh / 4,165mAh, 3-cell Li-ion slim internal — same electrical spec across both platforms; cable length differs by chassis
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⚠️ Two cable variants — must specify machine model when ordering: Shape A (short cable, VivoBook X510) and Shape B (long cable, TUF Gaming FX / B31BN91) are not interchangeable
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🏭 Factory-direct wholesale — both variants in stock, tiered bulk pricing, 3–5 business day dispatch
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📋 CoC and cell lot documentation included with every bulk shipment
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Description du produit
The B31N1726 is one of the more unusual batteries in the ASUS aftermarket — the same model number spans two completely different product lines with different target markets, different chassis designs, and different cable routing requirements. Understanding this structure is the single most important thing for wholesale buyers sourcing this SKU.
Platform 1: VivoBook 15 X510 / S510 / F510 series
Student and young professional mainstream notebooks released 2017–2018. Intel Core i5/i7, slim aluminum chassis, productivity-focused. Battery uses a shorter cable routed to the upper-right corner of the bay.
Platform 2: TUF Gaming FX504 / FX505 / FX80 / FX86 series
Budget gaming notebooks released 2018–2019. Intel Core i5/i7 + NVIDIA GTX 1050/1050 Ti/1060, heavier chassis with active cooling. Battery uses a longer cable routed to the lower-left corner of the bay. This variant is also widely referenced by its alternate model codes B31BN91, B31BNEH, and A41LK9H — all refer to the same Shape B battery.
Same B31N1726 model number. Same 11.52V / 48Wh electrical specification. Different spare part numbers. Different cable lengths. Not interchangeable.
The Two-Variant Selection Guide — How to Order Correctly
| Shape A | Shape B | |
|---|---|---|
| Also known as | B31N1726 | B31BN91 · B31BNEH · A41LK9H |
| Spare No. | 0B200-02760000 | 0B200-02910000 / 0B200-02910200 |
| Cell Code | 3ICP52/70/88 | 3ICP7/60/80 |
| Cable | Short — upper-right routing | Long — lower-left routing |
| Fits | X510UA/UF/UQ/UN · S510UA/UF/UQ · F510UA/UF/UQ · A510UA/UF | FX504GE/GM · FX505DT/DY/DU · FX80GD/GE/GM · FX86FE/FM/G |
The definitive identification method: open the back panel and read the spare part number on the original battery. 0B200-02760000 = Shape A (VivoBook). 0B200-02910000 or 0B200-02910200 = Shape B (TUF Gaming / B31BN91). When placing a bulk order, include this spare number and we confirm the correct variant before shipment.
Why B31BN91 Searches Should Land on This Page
B31BN91 is the alternate designation printed on TUF Gaming FX platform batteries from certain production batches. Buyers searching specifically for B31BN91 are looking for the exact same Shape B battery covered here — the spare part number 0B200-02910000 cross-references both designations in ASUS’s parts system. Stocking B31N1726 Shape B covers every B31BN91 inquiry without maintaining a separate SKU.
Why the TUF Gaming Platform Adds Meaningful Demand to This SKU
The FX504 and FX505 were ASUS’s entry-level gaming notebooks — priced at $600–$900, they were the default “first gaming laptop” recommendation for budget-conscious buyers between 2018 and 2020. Gaming laptop batteries degrade faster than productivity notebooks: sustained GPU loads discharge cells at higher C-rates, and many gaming users charge while playing, keeping batteries at 100% SoC under heat for extended periods. The combination of high-stress use patterns and a now 5–7 year old installed base means the TUF platform generates battery replacement demand at above-average rates compared to same-age consumer notebooks.
Compatible Models — Shape A (VivoBook 15 Platform):
X510UA · X510UF · X510UQ · X510UN · X510UNR · S510UA · S510UF · S510UQ · S510UN · F510UA · F510UF · F510UQ · A510UA · A510UF · A510UQ
Compatible Models — Shape B / B31BN91 (TUF Gaming Platform):
FX504GE · FX504GE-ES72 · FX504GE-DH52 · FX504GM · FX504GM-EN320T · FX505DT · FX505DT-AH51 · FX505DT-BQ051T · FX505DY · FX505DU · FX80GD · FX80GD-DB71 · FX80GE · FX80GE-UB72 · FX80GM · FX80GM-WB72 · FX86FE · FX86FE-DB71 · FX86FM · FX86FM-DB71 · FX86G
Compatible Part Numbers — Full Cross-Reference:
Shape A: B31N1726 · B31N1726-1 · 0B200-02760000 · 3ICP52/70/88
Shape B: B31N1726 · B31N1726-1 · B31BN91 · B31BNEH · A41LK9H · 0B200-02910000 · 0B200-02910200 · 3ICP7/60/80
Paramètres techniques
| Paramètre | Shape A (VivoBook X510/S510/F510) | Shape B / B31BN91 (TUF Gaming FX504/FX505/FX80/FX86) |
|---|---|---|
| Modèle de batterie | B31N1726 / B31N1726-1 | B31N1726 / B31BN91 / B31BNEH / A41LK9H |
| Spare Part No. | 0B200-02760000 | 0B200-02910000 / 0B200-02910200 |
| Cell Code | 3ICP52/70/88 | 3ICP7/60/80 |
| Cable Length | Short — upper-right routing | Long — lower-left routing |
| Tension | 11.52V nominal (3S Li-ion — identical across both shapes) | |
| Capacité | 48Wh / 4,165mAh | |
| Cell Config | 3-Cell (3S1P) Li-ion Polymer Pouch | |
| Protection du système de gestion technique du bâtiment | Overcharge / Over-discharge / Overcurrent / Short Circuit / Overheat / Cell Balancing | |
| Cycle de vie | ≥ 500 cycles @ 80% capacity retention | |
| Température de fonctionnement | Charge: 0–45°C · Discharge: -20–60°C | |
| Shipping SOC | 40–60% (air transport compliant) | |
| Certifications | CE / FCC / RoHS / UN38.3 | |
| Garantie | 12 Months (manufacturing defects) | |
Besoin d'un plan d'approvisionnement stable ? Envoyez-nous la liste des modèles, les quantités et la destination. Nous vous confirmerons le délai de livraison, le mode d'expédition et les documents de conformité avant que vous ne passiez commande.
Caractéristiques et avantages
✅ ⚠️ Two Cable Shapes — The Detail That Prevents Returns
Shape A (VivoBook X510) uses a short cable routing to the upper-right connector position on the motherboard. Shape B (TUF Gaming FX series, also listed as B31BN91) uses a longer cable routing to the lower-left connector position. Installing Shape A in a TUF chassis means the cable is too short to reach the motherboard connector — the battery will not connect. Installing Shape B in a VivoBook chassis leaves excess cable with no clean routing path, risking pinching between the bottom panel and the pack. For wholesale buyers: specify the spare part number when ordering, not just the model number B31N1726.
✅ 🎮 TUF Gaming Fleet — Accelerated Degradation Means Earlier Replacement
The FX504 and FX505 run NVIDIA GTX 1050 Ti or GTX 1060 GPUs alongside Core i5/i7 processors. Under active gaming, total system power draw reaches 80–120W — the battery discharges at 2–3× the C-rate of a typical VivoBook under productivity use. At these discharge rates, electrode wear accumulates faster per calendar year. A FX504 battery that has seen 2 hours of gaming per day for 5 years has experienced significantly more electrochemical stress than an X510 battery in the same period. For repair shops, this means TUF platform customers typically return for battery replacement earlier than VivoBook customers from the same purchase cohort.
✅ 📊 48Wh on a Gaming Platform — Managing Customer Expectations
The FX504 and FX505 draw 80–120W under gaming load. A full 48Wh pack at that draw rate delivers approximately 25–35 minutes of unplugged gaming — by design, not a defect. Under productivity workloads (browsing, documents, video), runtime on a new B31N1726 Shape B is 4–6 hours. For repair shops: set gaming runtime expectations explicitly before handing back a repaired FX504. A customer expecting 3 hours of gaming unplugged will be disappointed regardless of battery quality.
✅ 🏭 Both Variants in Standing Inventory
We maintain finished-goods stock on Shape A and Shape B simultaneously. Mixed-variant orders — for example, 40 units Shape A for VivoBook repair volume and 20 units Shape B (B31BN91) for TUF gaming repair volume — are fulfilled from a single purchase order with clearly separated, labeled inner cartons per variant. One Certificate of Conformance covers both shapes in the shipment, with separate lot numbers for each variant.
✅ 🔋 Same Cell Spec, Different Routing — Consistent QC Across Both Variants
Shape A and Shape B share the same 48Wh cell stack and BMS specification. The only manufacturing difference is the cable assembly. Our incoming cell QC protocol, capacity verification, and cell matching tolerance apply uniformly across both variants — there is no quality tier difference between VivoBook and gaming platform variants. For wholesale buyers who have experienced inconsistent quality between same-battery, different-connector variants from other suppliers, our unified cell pool for both shapes eliminates that variance source.
Emballage et livraison
Délai de livraison et expédition
Articles en stock : expédiés sous 3 jours
Pour les modèles de remplacement standard disponibles en stock.Commandes en gros : expédition sous 7 jours
Pour les modèles standards, sous réserve de spécifications et d'exigences d'emballage confirmées.Commandes personnalisées : expédition sous 15 jours
Pour une configuration de cellule personnalisée, taille, câblage/connecteur, PCB/BMS, étiquetage ou emballage.
Note: Le délai d'expédition final dépend de quantité totale, complexité du modèle, exigences d'emballage et documents de conformité d'expédition. Nous vous confirmerons la date d'expédition estimée (ETD) après confirmation de la commande.
Fret aérien (urgent, petit volume)
Transport maritime (économique pour les commandes en gros)
Transport ferroviaire / routier (selon la destination)
Chaînes express
Documents disponibles : UN38.3 / FDS / Rapport d'essai de transport (le cas échéant)
L'emballage conforme et l'étiquetage des cartons peuvent être réalisés en fonction du mode d'expédition choisi.
EXW / FOB / CIF / DDP disponibles
FAQ
Q1: B31N1726 comes in two cable shapes — how do I know which one my ASUS laptop needs?
Open the back panel and read the spare part number printed on the original battery label. 0B200-02760000 with cell code 3ICP52/70/88 = Shape A, for VivoBook 15 X510/S510/F510 series. 0B200-02910000 or 0B200-02910200 with cell code 3ICP7/60/80 = Shape B, for TUF Gaming FX504/FX505/FX80/FX86 series — this variant is also labeled B31BN91 or B31BNEH on some production batches. When placing a bulk order, include the spare part number and we confirm the correct shape before shipment.
Q2: What is B31BN91 — is it the same as B31N1726?
B31BN91 (also B31BNEH and A41LK9H) is the alternate model designation printed on TUF Gaming FX platform batteries from certain ASUS production batches. It refers to the same Shape B battery with spare part number 0B200-02910000 — electrically identical to B31N1726 Shape B, with the same 11.52V / 48Wh specification. Buyers searching for B31BN91 specifically are looking for the TUF Gaming variant of this battery. Stocking B31N1726 Shape B covers every B31BN91 inquiry without needing a separate SKU.
Q3: Can Shape A and Shape B be used interchangeably if I reroute the cable?
No. Shape A has a short cable routing to the upper-right motherboard connector. Shape B has a longer cable routing to the lower-left position. Shape A in a TUF chassis will not reach the motherboard connector — no electrical contact. Shape B in a VivoBook chassis leaves excess cable with no clean routing path, risking pinching and potential short circuit against the metal bottom panel over time. This is a hard compatibility boundary. Always confirm the spare part number before fulfillment.
Q4: What runtime should TUF Gaming FX504/FX505 customers expect from a new B31N1726 Shape B / B31BN91?
Under active gaming with GPU at full load, expect 25–35 minutes unplugged — by design, not a defect. The GTX 1050 Ti/1060 GPU draws 60–80W, with total system load reaching 80–120W under gaming. Under productivity workloads — browsing, documents, video — a new 48Wh Shape B delivers 4–6 hours. Set this expectation explicitly before returning repaired FX504/FX505 units to customers to prevent post-repair complaints about gaming runtime.
Q5: Can I order both Shape A and Shape B in a single purchase order?
Yes. Mixed-shape orders are fully supported. Shape A and Shape B are packed in clearly separated, labeled inner cartons within the same master shipment. The packing list identifies shape variant and quantity per carton, and the Certificate of Conformance covers both shapes in a single document with separate cell lot numbers per variant. For repair shops or distributors serving both consumer VivoBook and gaming laptop repair channels, this consolidates freight cost and simplifies the procurement trail.
Q6: What documentation and warranty terms apply to bulk B31N1726 orders covering both shapes?
Each bulk shipment includes a Certificate of Conformance specifying shape variant, spare part number, cell lot number, production date, and capacity QC parameters. Warranty is 12 months from shipment date covering manufacturing defects and capacity degradation below 70% of rated 48Wh for both Shape A and Shape B. DOA claims require a photo of the defective battery label showing the spare part number — this confirms which shape the claim relates to — plus a brief failure description. Return shipment is not required below our defined batch replacement threshold. Replacements dispatch within 5 business days of claim confirmation.
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