Astrum Replacement Battery for ASUS X453/X553 Series – 7.2V 4400mAh (B21N1329 Compatible)

SKU: ABT-ASX553 | 12-Month Warranty | Li-Polymer | Certified Safe
Extended Power for ASUS Laptops – Reliable Performance with Enhanced Runtime

Revitalize your ASUS laptop with the Astrum 7.2V 4400mAh Replacement Battery, designed for seamless compatibility with ASUS X453, X553, F453, P553, and X503 series. Featuring high-capacity Li-Polymer cells, built-in safety protections, and CE/RoHS certifications, this battery delivers long-lasting power for work, study, and entertainment.

🔥 Key Features

✔ High Capacity – 4400mAh for extended unplugged usage
✔ Perfect Compatibility – Designed for ASUS X453/X553 series and compatible with B21N1329
✔ Li-Polymer Technology – Lightweight, efficient, and supports partial charging without memory effect
✔ Multi-Protection Circuit – Safeguards against overcharging, overheating, and short circuits
✔ Certified Safe – CE and RoHS certified for quality and environmental compliance
✔ Easy Installation – Direct replacement; no tools required
✔ 12-Month Warranty – Reliable performance with hassle-free support

📊 Technical Specifications
Feature Specification
Voltage 7.2V
Capacity 4400mAh
Chemistry Li-Polymer
Compatible Part No B21N1329
Safety Certifications CE, RoHS
Protections Overcharge, overheat, short-circuit protection

✅ Compatible Model Numbers

ASUS X403, X403M, X403MA
ASUS X503, X503M
ASUS X502CA
ASUS X453, X453MA
ASUS X553, X553M
ASUS F453, F453MA
ASUS F553M
ASUS P553

✅ Compatible Part Numbers

B21N1329
ABT-ASX553

Note: Verify your laptop model and original battery part number before purchase.
🛠️ Installation & Maintenance Tips

Power Off – Shut down the laptop and disconnect the AC adapter.
Remove Old Battery – Slide the locking latch to release and remove the old battery.
Insert New Battery – Align and slide the Astrum battery into place until it clicks.
Initial Charge – Charge fully before first use for optimal performance.
Maximize Lifespan – Avoid extreme temperatures; perform full discharge cycles monthly.

📦 What’s Included

1 × Astrum 7.2V 4400mAh Battery (B21N1329 compatible)
1 × User Manual (with safety guidelines)

"Stay powered all day—backed by a 12-month warranty!"