Brand: ASUS
Factory Part Number (P/N): B31N1911
Compatible Models: ADOL14FQC V4050F/E X421DA/JQ B31N1
Label Capacity: 11.55V-42Wh-3640mAh
Cell Configuration: 9 3 cells
Real Capacity: 3680mAh
Get premium-quality replacement batteries for your device. Guaranteed safety, power, and performance!
Price Start From 1500 ৳
We Repair Original Laptop Batteries – New Batteries Also Available!
The B31N1911 is compatible with ADOL14FQC V4050F/E X421DA/JQ B31N1. We offer top-tier laptop batteries built for reliability and endurance.

High-Performance Laptop Battery Replacement – Reliable Power for Your Device
Looking for a durable and reliable replacement battery for your laptop? Our premium-quality laptop batteries are designed to deliver long-lasting performance, extended battery life, and full compatibility with your device. Whether you’re replacing an old battery or upgrading for better performance, this battery ensures seamless integration and powerful results.
Brand: ASUS
Factory Part Number (P/N): B31N1911
Compatible Models: ADOL14FQC V4050F/E X421DA/JQ B31N1
Label Capacity: 11.55V-42Wh-3640mAh
Cell Configuration: 9 3 cells
Real Capacity: 3680mAh
Get premium-quality replacement batteries for your device. Guaranteed safety, power, and performance!
Built with top-grade cells and strict quality control, this battery guarantees safety, stability, and power when you need it most. Ideal for professionals, students, and anyone on the go.
🔋 Why Choose Our Batteries?
- 100% compatible with OEM standards
- Overcharge and short-circuit protection
- Certified for safety and efficiency
- Backed by warranty and customer support
Replace your battery with confidence and restore your laptop’s original performance.