Laptop Battery for ASUS E502M E502S E502N E502NA E502NY B21N1506 7.6V 38Wh 5000mAh High Capacity, 2-Year Warranty

**Product Overview**
Upgrade your ASUS E502 series laptop with this high-performance replacement battery. Designed to meet or exceed OEM specifications, it delivers reliable power for daily tasks, online classes, video streaming, and office work. Say goodbye to sudden shutdowns and low battery anxiety.

**Important Voltage Warning**
Please check your original battery voltage before purchasing. This battery is 7.6V. Using an incorrect voltage battery may cause charging failure or damage to your device. If your original battery is 11.4V or 14.8V, this product will NOT work.

**Compatible Laptop Models**
- ASUS E502M
- ASUS E502S
- ASUS E502N
- ASUS E502NA
- ASUS E502NY

**Replacement Part Numbers**
- B21N1506

**Specifications**
| Parameter | Value |
|-----------|-------|
| Battery Type | Li-ion |
| Voltage | 7.6V |
| Capacity | 5000mAh / 38Wh |
| Color | Black |
| Cell Quality | Grade A+ |
| Cycle Life | 500+ cycles |
| Safety Certifications | CE, FCC, RoHS |
| Warranty | 2 Years |

**Comparison Table**
| Feature | Our Battery | Generic Battery |
|---------|-------------|----------------|
| Cell Grade | Grade A+ | Unknown / Mixed |
| Voltage Accuracy | ± 0.1V | ± 0.3V or higher |
| Overcharge Protection | Yes | Not always |
| Warranty | 2 Years | 6-12 Months |
| Cycle Life | 500+ | 300-400 |

**Installation Tips**
1. Power off your laptop and unplug the AC adapter.
2. Remove the battery by sliding the release latch (if external) or unscrewing the back cover (if internal).
3. Disconnect the old battery cable gently.
4. Insert the new battery and secure it properly.
5. Charge the battery fully (about 3-4 hours) before first use for optimal performance.
6. If the battery does not charge immediately, try
a hard reset: unplug the charger, remove the battery, hold the power button for 30 seconds, then reinstall and charge.

**Package Includes**
- 1x Replacement Battery

- 1x Screwdriver (if needed for internal models)

**Note**
- Please confirm your laptop model and original battery part number before ordering.
- Do not disassemble, puncture, or expose the battery to high temperatures.
- Recycle old batteries according to local regulations.

**Why Choose Us? **
We specialize in laptop batteries for eBay and Newegg, with years of export experience. Every battery is tested for capacity, voltage, and safety before shipping. Your satisfaction is our priority contact us anytime for support.