B31N1842 Battery Replacement for ASUS VivoBook S15 S531FA S531FL X531FL 11.52V 42Wh
The B31N1842 battery is a replacement laptop battery designed for ASUS VivoBook S15 S531FA, S531FL, X531FL, V531FA, V531FL, and K531FL Series laptops.
This 11.52V 42Wh Li-ion battery provides stable and reliable power for everyday computing, office work, study, and entertainment. It is compatible with battery part numbers including B31N1842, B31BmE1, 0B200-03440000, and 3ICP5/57/80.
If your ASUS laptop battery has reduced battery life, cannot hold a charge, or shuts down unexpectedly, replacing it with a compatible B31N1842 replacement battery can help restore normal performance.
The battery uses high-quality lithium-ion cells and provides safe charging performance with reliable power output.
Product Specifications
| Item | Details |
|---|---|
| Product Type | Laptop Replacement Battery |
| Battery Model | B31N1842 |
| Battery Type | Lithium-ion (Li-ion) |
| Voltage | 11.52V |
| Capacity | 3550mAh / 42Wh |
| Battery Color | Black |
| Condition | New Replacement Battery |
| Warranty | 12 Months |
| Compatible Brand | ASUS |
| Package Includes | 1 × Battery |
Compatible Battery Part Numbers
This B31N1842 replacement battery supports the following part numbers:
- B31N1842
- B31BmE1
- 0B200-03440000
- 3ICP5/57/80
Compatible ASUS Laptop Models
The B31N1842 battery is compatible with:
ASUS VivoBook Series
- ASUS VivoBook S15 S531FA Series
- ASUS VivoBook S15 S531FL Series
- ASUS VivoBook S15 M513IA Series
- ASUS VivoBook S15 M513UA Series
- ASUS VivoBook S15 K513EA Series
- ASUS VivoBook S15 K513EQ Series
- ASUS VivoBook S15 F513EA Series
- ASUS VivoBook S15 F513EP Series
ASUS V Series
- ASUS V531 Series
- ASUS V531FA Series
- ASUS V531FL Series
Other Compatible Models
- ASUS X531FL Series
- ASUS K531FL Series
B31N1842 Battery Features
Reliable Power Replacement
The B31N1842 battery provides a reliable replacement solution for ASUS laptops with old or damaged batteries.
It helps solve common battery problems such as:
- Short battery runtime
- Fast battery drain
- Battery charging failure
- Unexpected shutdowns
Stable Lithium-ion Performance
This battery uses Li-ion technology to provide:
- 11.52V stable output
- 42Wh energy capacity
- Consistent charging performance
- Long service life
Safe Battery Protection System
The battery includes protection functions to improve safety:
- Over charging protection
- Over discharge protection
- Over current protection
- Short circuit protection
- Temperature protection
Why Replace Your ASUS B31N1842 Battery?
Laptop batteries naturally lose capacity after many charging cycles.
A worn battery may cause:
- Laptop running time becomes shorter
- Battery percentage drops quickly
- Laptop turns off without warning
- Need to keep charger connected
Installing a compatible B31N1842 battery replacement can help restore your ASUS VivoBook laptop’s mobility and power performance.
How to Check B31N1842 Battery Compatibility?
Before purchasing, please confirm:
1. Check Your Laptop Model
Compatible series include:
- ASUS VivoBook S15 S531FA
- ASUS VivoBook S15 S531FL
- ASUS VivoBook M513
- ASUS VivoBook K513
- ASUS VivoBook F513
- ASUS V531 Series
2. Check Original Battery Part Number
Your original battery should match one of these:
- B31N1842
- B31BmE1
- 0B200-03440000
- 3ICP5/57/80
3. Compare Battery Specifications
Check:
- Voltage: 11.52V
- Capacity: 42Wh
- Connector position
- Battery shape and size
Installation Tips
To replace your ASUS laptop battery:
- Shut down your laptop completely.
- Remove the power adapter.
- Open the laptop back cover.
- Disconnect the old battery.
- Install the new B31N1842 battery.
- Fully charge before normal use.
First Use Battery Instructions
For better battery performance:
- Charge the new battery to 100%.
- Use the laptop until around 10%-15% battery remains.
- Recharge it again.
- Repeat several charging cycles.
