3640mAh/42Wh B31N1911 Replacement Battery for Asus TP420IA TP470EA TP470EZ X421DA X421EA/JP

Our brand-new Laptop Battery compatible with Asus B31N1911 is engineered to deliver long-lasting and stable performance. It is designed to meet rigorous standards, ensuring full compatibility with devices such as the Asus TP420IA TP470EA TP470EZ X421DA X421EA/JP. This battery comes with a one-year warranty and has passed essential safety certifications including CE, RoHS, and ISO9001. Choose our Asus B31N1911 battery for a power solution that combines quality, safety, and convenience. Invest in authentic performance and keep your Asus TP420IA TP470EA TP470EZ X421DA X421EA/JP running like new.

3640mAh/42Wh B31N1911 Replacement Battery for Asus TP420IA TP470EA TP470EZ X421DA X421EA/JP

Product Specifications
Brand: Asus Laptop Battery
Battery Type: Li-ion
Battery Voltage: 11.55V/13.2V
Battery Capacity: 3640mAh/42Wh
Warranty: 30 Days Money Back, 1 Year Warranty.
Over 500-800 times of charge and discharge.

Compatible Part Numbers:

B31N1911

Compatible Models:
Asus TP420IA TP470EA TP470EZ X421DA
X421EA X421EP X421EQ X421FA X421FF X421FL
X421FP X421FQ X421IA X421JA X421JP X421JQ

As a professional manufacturer, we offer a 100% brand new Li-ion battery for Asus B31N1911, built with genuine Grade A cells to ensure high quality and stable performance. Certified by CE, ROHS, and MSDS, this battery delivers excellent discharge characteristics and supports over 500–800 charge cycles.

It is fully compatible with original Fujitsu equipment and features multiple built-in protections including over-charge, over-current, over-voltage, and short-circuit prevention. Designed with an advanced printed circuit board (PCB), it provides reliable and safe operation.

Backed by a one-year warranty, 30-day money-back guarantee, and 100% secure shopping assurance, we provide premium performance at a competitive price.

To ensure optimal performance and longevity of your Asus B31N1911 Battery, please adhere to the following guidelines:
1.Storage - Store the battery B31N1911 in a clean, dry, and cool environment, away from heat sources and metal objects. During storage, the battery will gradually self-discharge. It is recommended to store it at approximately 40% state of charge.
2.Charging and Discharging - Unlike older battery technologies, lithium-ion batteries do not require frequent full discharge cycles. Only perform a full discharge approximately every 30 charging cycles. Avoid charging the battery beyond its specified threshold voltage.
3.Regular Use - Avoid leaving the battery B31N1911 idle for extended periods. It is advisable to use the battery at least once every two to three weeks. If the battery has been unused for a long time, follow the initial break-in procedure as recommended for new batteries.
4.Calibration - If the battery indicator shows 76% or less during use, fully charge it, then fully discharge it, and finally recharge it completely to calibrate the battery level accuracy.
5.Usage on Fixed Power - Consider removing the battery from the laptop when using a fixed power source for extended periods to reduce unnecessary charging cycles.
6.Short-Circuit Prevention - Do not short-circuit the battery, as this can cause serious damage and compromise safety.
By following these practices, you can help maintain the performance and extend the life of your Asus B31N1911 Battery.