Battery for ASUS FX80G FX86F FX86G FX95G FX504G FX504E B31N1726, 15.4V 48Wh/56Wh, High Capacity, 1-Year Warranty

**Product Overview**
This replacement battery is specifically designed for ASUS ROG Strix / TUF Gaming series laptops, including models FX80G, FX86F, FX86G, FX95G, FX504G, and FX504E. It is a direct replacement for the original ASUS battery model B31N1726. Whether your original battery no longer holds a charge, swells, or fails to power on, this battery offers a reliable and cost-effective solution to restore your laptops mobility.

** Voltage Compatibility Warning**
Please confirm that your original battery voltage is ** 15.4V ** before purchasing. This battery is NOT compatible with 11.1V or 14.8V systems. Using an incorrect voltage may cause damage to your laptop or battery.

**Compatible Laptop Models (Partial List) **
- ASUS FX80G (all sub-models)
- ASUS FX86F / FX86G
- ASUS FX95G
- ASUS FX504G / FX504E
- Also compatible with other ASUS models using B31N1726 battery

**Replaces Original Part Numbers**
B31N1726, B31N1726-1, B31N1726-2, C31N1726

**Specifications**
| Parameter | Value |
|-----------|-------|
| Battery Type | Li-ion |
| Voltage | 15.4V |
| Capacity | 48Wh / 56Wh (depending on version) |
| Cells | 4-cell |
| Color | Black |
| Connector | 6-pin |
| Dimensions | Approx. 270 x 70 x 7 mm |
| Weight | Approx. 280g |

**Comparison Table: Old vs New Battery**
| Feature | Original Battery (Aged) | Our Replacement Battery |
|---------|------------------------|-------------------------|
| Charge Retention | Poor (drains quickly) | Excellent (holds charge) |
| Cycle Life | Degraded ( < 300 cycles) | High-quality cells ( 500 cycles) |
| Safety Protection | Basic | Overcharge / Over-discharge / Short circuit / Over-temp |
| Warranty | Expired | 12 months |

**Installation Tips**
1. Power off your laptop and unplug the AC adapter.
2. Remove the bottom panel screws (refer to your laptops service manual).
3. Disconnect the old battery cable and remove the battery.
4. Insert the new battery, reconnect the cable, and secure the panel.
5. Charge the battery fully before first use for optimal performance.
6. If the battery is not recognized, try
a hard reset: unplug AC, remove battery, hold power button for 30 seconds, then reassemble.

**Package Includes**
- 1 x Replacement Battery

- 1 x Installation Guide

**Note**
This is a third-party replacement product, not an original ASUS item. However, it meets or exceeds OEM quality standards. Please verify your laptop model and original battery part number before ordering.