Product Overview
The BTY-L77 is a high-performance 9-cell 83.25Wh (7500mAh) Li-ion replacement battery designed for MSI GT72, GT72S, GT72VR, GT80 2QE, and WT72 series gaming laptops. Built with Grade-A cells to sustain massive power draw from high-end graphics and desktop-class CPUs. Features an integrated BMS system for thermal safety and stable power regulation. Ships 100% brand new with a 1-year warranty.
Technical Specifications
| Standard Model | BTY-L77 / 1781-33/2500 S |
|---|---|
| Capacity | 83.25Wh / 7500mAh |
| Voltage | 11.1V |
| Battery Type | Li-ion (9-Cell) |
| Condition | 100% Brand New Replacement |
| Warranty | 1 Year |
Replace Part Numbers
- BTY-L77
- P/N:1781-33/2500 S
Compatible Laptop Models
- MSI GT72 / GT72S Series
- MSI GT72VR / GT72VR 6RE / 6RD
- MSI GT80 / GT80 2QE / 2QD
- MSI WT72 / MS-1781 / MS-1782 / MS-1783
FAQ
Q: Is this battery compatible with the MS-1782 chassis?
A: Yes. The BTY-L77 is designed for the MS-1781, MS-1782, and MS-1783 chassis used across the GT72 and WT72 high-end series. Please verify your original battery model number.
Q: How do I calibrate this high-capacity 9-cell battery?
A: We recommend a full initial charge to 100%, then allowing it to discharge to 10% once before charging back to 100%. This helps your laptop accurately report the massive 83.25Wh runtime.