ASUS B31N1631 Replacement Battery — 42Wh 11.55V 3-Cell for VivoBook 15 X505BA X505BP X505ZA & S505 Series
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🔋 Direct OEM replacement for ASUS B31N1631 — engineered to match factory voltage, capacity, and connector spec without modification
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📦 Broad model coverage: fits VivoBook 15 X505BA, X505BP, X505ZA, F505BA, S505BA, S505ZA series and 40+ sub-models
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⚡ 11.55V / 42Wh / 3727mAh, 3-cell Li-ion — true-rated capacity, no inflated figures
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🏭 Factory-direct B2B supply: tiered wholesale pricing, mixed-SKU orders accepted, consistent batch quality
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📋 P/N coverage: B31N1631, 0B200-02510000, 0B200-02510200, 0B200-02510500, 3ICP5/57/81
Description du produit
The B31N1631 is the factory-designated 3-cell battery for ASUS’s mid-range VivoBook consumer line — the X505, F505, S505, and R504 families — launched from 2017 onward and still actively deployed in school and SME fleets today. These machines continue to generate strong repair and fleet-refresh demand because they were procured in large volumes at launch and are now hitting their first major battery replacement cycle.
Our B31N1631 production line maintains dimensional and electrical tolerances within ±1% of the original ASUS specification: 11.55V nominal, 42Wh rated capacity, 3727mAh, 3-cell Li-ion polymer architecture. Every pack ships pre-tested at ≥95% of rated capacity.
Compatible Models & Part Numbers
Verified compatible OEM part numbers: B31N1631 / 0B200-02510000 / 0B200-02510200 / 0B200-02510500 / 3ICP5/57/81 / B31BI2H / B31BI9H
Compatible laptop series (verified against ASUS service documentation):
| Série | Key Models |
|---|---|
| VivoBook 15 X505BA | X505BA-1A/1B/1C/3F/3G, X505BA-RB94, X505BA-BR016T |
| VivoBook 15 X505BP | X505BP-1A/1B/1C/3F/3G, X505BP-BR007T |
| VivoBook 15 X505ZA | X505ZA-BB31, X505ZA-BQ013T, X505ZA-AS2502T, X505ZA-BG879T |
| VivoBook 15 F505BA/BP/ZA | F505BA-BR036T~BR038T, F505BP-EJ156T, F505ZA-BQ072T |
| VivoBook S505 | S505BA-BR033T, S505BP-BR013T, S505ZA-EJ484T, S505ZA-BR225T |
| VivoBook S14 S410UN | S410UN-EB065T, S410UN-NS74, S410UN-EB143T |
| VivoBook 17 X705MA | X705MA-BX124T, X705MA-BX162/163, X705MA-BX171T/179T/186T |
| R504 / A505 | R504BA, R504ZA-BQ064T/135T, A505BA, A505BP, A505ZA |
Paramètres techniques
| Paramètre | Spécification |
|---|---|
| Modèle de batterie | B31N1631 |
| Tension nominale | 11.55V (compatible: 11.52V / 11.1V) |
| Capacité nominale | 42Wh / 3727mAh |
| Configuration cellulaire | 3-Cell (3S1P) |
| Chimie cellulaire | Li-ion / Li-Polymer |
| Qualité cellulaire | Grade A — ≥95% rated capacity on delivery |
| Cycle de vie | 500+ full cycles to ≥80% capacity retention |
| OEM Part Numbers | B31N1631, 0B200-02510000, 0B200-02510200, 0B200-02510500, 3ICP5/57/81, B31BI2H, B31BI9H |
| Type de connecteur | OEM-matched, direct plug-in replacement |
| Couleur | Noir |
| Condition | Brand New — 0 cycles |
| Température de fonctionnement. | 0°C ~ 45°C (charge) / -20°C ~ 60°C (décharge) |
| Storage Temp. | -20°C ~ 25°C, ≥50% charge state recommended |
| Certifications | CE, RoHS, UN38.3 |
| Garantie | 12 mois |
| Supply Mode | Factory Direct — FOB / CIF / DDP available |
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
✅ 3-Cell Li-ion Pack Built for High-Cycle Repair Demand
This battery sees heavy throughput in computer repair chains and IT asset management programs because it covers five distinct VivoBook series with a single SKU. For repair shops running AMD A-series VivoBook models from 2017–2019, this is a non-negotiable stock item. Our cells deliver 500+ full charge cycles before falling below 80% capacity retention — consistent with what an experienced repair technician expects from a credible replacement.
✅ True Capacity, Verified — Not Spec-Sheet Marketing
Rated 42Wh / 3727mAh at 11.55V. Each production batch is pull-tested at ≥95% of rated capacity before shipment. We don’t pad spec sheets: the battery you receive draws the same wattage as the original ASUS pack on system diagnostics. This matters to B2B buyers whose customers will notice — and return — a substandard unit.
✅ Single-SKU Coverage Across 40+ VivoBook Sub-Models
The B31N1631 footprint, connector type, and BMS pinout are shared across the X505, F505, S505, and select S410/X705 series. Stocking one SKU covers a substantial portion of AMD-platform VivoBook repair volume. Distributors and repair wholesalers report this as one of the top-10 ASUS battery SKUs by unit velocity.
✅ Stable Production Supply for Repeat B2B Orders
We maintain continuous cell inventory and finished pack stock specifically for legacy ASUS models with sustained aftermarket demand. Lead time on repeat orders: 3–5 business days ex-factory. Mixed-brand pallet orders are accommodated — no requirement to fill a full carton with a single model.
✅ OEM-Grade Build Materials
Connector housing uses PA66 flame-retardant nylon. PCB protection circuit runs independent over-voltage, over-current, and temperature cutoff — not a shared cell BMS. Cell tabs are laser-welded, not spot-welded with loose contacts. These are the construction details that differentiate a battery lasting 18 months in service from one returned after three.
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: How long does the ASUS B31N1631 replacement battery last per charge?
Under mixed workloads (web browsing, office apps, moderate brightness) on AMD A-series VivoBook hardware, runtime typically falls between 3.5 and 5 hours — consistent with the original ASUS 42Wh pack. Actual runtime depends on CPU load, screen brightness, and background processes. Battery health stays above 80% rated capacity for 500+ full charge cycles under normal use conditions.
Q2: Is the B31N1631 compatible with VivoBook S14 S410UN models?
Yes — the S410UN-EB065T, S410UN-NS74, and S410UN-EB143T are confirmed compatible. Verify by checking the label on your existing pack: if it shows B31N1631, 0B200-02510000, 0B200-02510200, or 3ICP5/57/81, this battery is a direct replacement.
Q3: Does the B31N1631 battery need to be calibrated or activated after installation?
No special activation procedure is required. Install the pack, connect the AC adapter, and charge to 100% before the first use. The onboard BMS communicates with the ASUS EC firmware automatically — the system will display accurate charge percentage from the first boot.
Q4: What is the minimum order quantity (MOQ) for wholesale B31N1631 batteries?
We accommodate small and large B2B orders alike — no fixed minimum is required for initial sample or trial orders. Mixed-model pallet orders are supported. Contact us for tiered pricing by volume; we provide factory quotes with lead time confirmation within 24 hours.
Q5: What part numbers are interchangeable with B31N1631?
All of the following are functionally interchangeable: B31N1631, 0B200-02510000, 0B200-02510200, 0B200-02510500, 3ICP5/57/81, B31BI2H, B31BI9H. These designations appear across different ASUS regional markets for the same physical pack. If your existing battery shows any of these numbers, our replacement fits.
Q6: What are the shipping and lead time options for bulk orders?
Standard production lead time is 3–5 business days ex-factory for stock models. We ship FOB, CIF, and DDP. Express courier (DHL/FedEx) is available for orders under 100 units. For larger freight shipments, we coordinate with your forwarder directly. Sample units ship within 24 hours of order confirmation.
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