Battery for MSI GT72VR GT72 MS-1781/1783 WT72 BTY-L77 11.1V 5900mAh 65Wh, High Capacity Li-ion Laptop Battery [6 Months Warranty]

**Product Overview**
This high-performance replacement battery is specifically designed for MSI GT72VR, GT72, and WT72 series laptops. It matches the original BTY-L77 battery specifications ( 11.1V, 5900mAh, 65Wh) and ensures stable power delivery for your demanding tasks. Whether you are gaming, editing videos, or working on the go, this battery provides reliable backup power to keep you productive.

**Important Voltage Warning**
Please check your original batterys voltage before purchase. This battery is 11.1V (3-cell series). If your original battery is 14.4V or 14.8V (4-cell series), this battery will NOT work and may cause damage. Always verify voltage compatibility.

**Compatible Models & Part Numbers**
- Laptop Models: MSI GT72VR (6RE/7RE/6RD/7RD), GT72 (2QD/2QE/2PC/2PE/2QC), WT72 (2OK/2OM/2ON/2OO), MS-1781, MS-1783
- Original Battery Part Numbers: BTY-L77, BTY-L77-1, BTY-L77-2, BTY-L77-3, BTY-L77-4

**Specifications**
| Parameter | Value |
|-----------|-------|
| Chemistry | Lithium-Ion (Li-ion) |
| Voltage | 11.1V (nominal) |
| Capacity | 5900mAh / 65Wh |
| Cell Count | 3 cells |
| Color | Black |
| Weight | Approx. 320g |
| Connector | 6-pin (OEM standard) |
| Certification | CE, FCC, RoHS |

**Comparison Table**
| Feature | Our Battery | OEM Battery | Generic Low-Cost Battery |
|---------|-------------|-------------|--------------------------|
| Capacity | 5900mAh / 65Wh | 5900mAh / 65Wh | Often 4400mAh or less |
| Cell Grade | Grade A+ | Original | Grade B or recycled |
| Protection Circuit | Full (OCP/OVP/SCP) | Full | Basic or missing |
| Warranty | 6 Months | 12 Months (from MSI) | 30 days or none |
| Price | Affordable | Very expensive | Cheap but risky |

**Installation Tips**
1. Shut down your laptop and unplug the AC adapter.
2. Remove the bottom cover (screws may be located near the battery area).
3. Disconnect the old battery cable gently.
4. Remove the old battery and insert the new one, aligning the connector.
5. Secure the battery with screws and replace the bottom cover.
6. Plug in the AC adapter and charge fully before first use (about 4-6 hours).
7.
Calibrate once a month: fully charge, then discharge to 5% and recharge to 100%.

**Safety & Quality**
Every battery undergoes rigorous testing for capacity, voltage stability, and safety. We use only Grade A cells with built-in protection ICs to prevent overcharging, overheating, and short circuits. This battery is not an OEM product but is fully compatible and meets or exceeds original performance standards.

**Package Includes**
- 1x Replacement Battery (BTY-L77 compatible)
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(English)

**Warranty & Support**
We offer a 6-month warranty against manufacturing defects. If you have any compatibility questions or issues, please contact us before returning. We typically respond within 24 hours on business days.

**Note**
This battery is designed for MSI GT72VR, GT72, and WT72 series laptops only. Do not use on other models. If your laptop model is not listed, please check your original battery part number or voltage before ordering.