ANTIEE 48Wh B31N1402 Laptop Battery Replacement - Reliable Long Run

In this review the ANTIEE 48Wh B31N1402 laptop battery is assessed for users who need a dependable replacement for select ASUS Q551 and N59x series machines. The bottom line: this is a straightforward, well-built Li-ion replacement that delivers the advertised 11.4V and 4110mAh capacity and restores several hours of usable runtime without fuss. The reviewer found installation simple, charge behavior stable, and safety protections intact, making it a practical swap for anyone whose original battery no longer holds charge.

Key Features

• 11.4V Voltage: Matches the original laptop requirement so the battery integrates without power compatibility issues.
• 48Wh / 4110mAh Capacity: Provides roughly six hours of mixed-use runtime for typical productivity and web browsing tasks.
• Li-ion Chemistry: Delivers a balanced energy density and weight for a replacement battery while keeping size and heat manageable.
• Multi-protection Circuitry: Built-in short circuit, overheat and overload protections add safety and help prevent damage to the laptop.
• Compatibility: Directly replaces part numbers like B31N1402 and fits ASUS Q551, Q551L, Q551LN, Q552UB and N591LB/N592UB series models.
• Quality Testing and Certifications: ANTIEE tests capacity and current stability and supplies UL/CE/FCC/RoHS certified cells for safer long-term use.

Who It's For

This replacement is best for owners of compatible ASUS models who want a cost-effective option to restore original battery life without buying a new laptop; it suits students, professionals and home users who need reliable all-day charge for browsing, document work and media playback. The battery's tested capacity and safety features make it a sensible choice for people who value predictable runtime and basic protections.

Users who depend on maximum possible run times for heavy gaming or professional rendering should consider higher-capacity external solutions or service options rather than this direct replacement. Also, owners of laptops outside the listed ASUS Q551 and N59x families should verify compatibility before purchasing.

Pros & Cons

Pros

• Restores several hours of usable run time with a true 48Wh / 4110mAh capacity.
• Easy to install, fitting the intended ASUS models without modification.
• Built-in protection circuits and industry certifications improve safety and longevity.
• Backed by 30-day returns and a 12-month warranty for consumer confidence.

Cons

• Capacity is adequate for moderate use but not a high-capacity upgrade for power users.

Specifications

Brand	ANTIEE
Voltage	11.4V
Capacity	48Wh / 4110mAh
Battery Type	Li-ion
Replace Part Numbers	B31N1402, B31BN9H, 0B200-01050000
Compatible Models	ASUS Q551/Q551L/Q551LN/Q552UB and N591LB/N592UB series
Warranty	12 months

Our Verdict

The ANTIEE 48Wh replacement battery is a practical, value-minded option for owners of the compatible ASUS laptops who need to restore everyday runtime and safety features without premium cost. It offers reliable charge capacity, easy installation and manufacturer testing and certification, making it a sensible buy for general productivity users who want predictable performance and warranty support.

Frequently Asked Questions

Will this battery fit my ASUS Q551LN?
Yes, it is specified as compatible with Q551LN models and replaces the listed part numbers for a straightforward fit.

How long does the battery last on a full charge?
Customers report around six hours of mixed use; actual runtime will vary with workload and power settings.

What warranty and support are offered?
ANTIEE offers a 30-day money-back policy and a 12-month warranty, with email technical support from their team.