GreenTechLLC
GreenTechLLC B31N1842 42WHR laptop battery for ASUS Vivobook 15
Replacement 42 Wh three-cell lithium-ion battery for multiple ASUS Vivobook 15 models
- ColorBlack
- TypeBattery
- CompatibilityASUS VIVOBOOK 15 K531, VIVOBOOK 15 K531F, VIVOBOOK 15 M513,
- Battery Type3 Cell Lithium-Ion
- Battery Voltage11.52V
- Battery Capacity3550MAH
- Replaces OEM part numbers B31N1842 and 0B200-03440000 for direct fit
- 42 Wh capacity restores original runtime for Vivobook 15 models
- 52 V 3550 mAh three-cell lithium-ion matches factory voltage and capacity
- Tested for correct voltage, circuit protection and stable current before shipping
- CE, FCC and RoHS certified for electrical safety and environmental compliance
GreenTech B31N1842 42 Wh laptop battery
This new GreenTech B31N1842 battery replaces the original 42 Wh unit in compatible ASUS Vivobook 15 models. It is a 3 cell lithium-ion pack rated at 11.52 V and 3550 mAh. The part is built to match OEM voltage and circuit protection requirements.
Fits many Vivobook 15 K531 S531 V531F X531F M513
Owners of the listed Vivobook 15 series can use this as a direct swap. Buyers with other ASUS lines or different form factors cannot use this battery. Anyone needing a higher capacity pack should look for a different part number.
42 Wh capacity decides runtime
The 42 Wh rating determines how long the laptop runs on a charge. If your original battery is also 42 Wh this restores the same runtime. A different watt-hour value means this is not the correct replacement.
Highlights
- Replaces OEM part numbers B31N1842 and 0B200-03440000 for direct fit
- 42 Wh capacity restores original runtime for Vivobook 15 models
- 52 V 3550 mAh three-cell lithium-ion matches factory voltage and capacity
- Tested for correct voltage, circuit protection and stable current before shipping
- CE, FCC and RoHS certified for electrical safety and environmental compliance
Specifications
| Brand | GreenTech |
|---|---|
| Model | B31N1842, B31BME1, 0B200-03440000, 0B200-03440000M |
| Part Number | B31N1842, B31BME1, 0B200-03440000, 0B200-03440000M |
| Color | Black |
| Type | Battery |
| Compatibility | ASUS VIVOBOOK 15 K531, VIVOBOOK 15 K531F, VIVOBOOK 15 M513, VIVOBOOK 15 S531, VIVOBOOK 15 S531F, VIVOBOOK 15 S531FA, VIVOBOOK 15 S531FL, VIVOBOOK 15 S5500F, VIVOBOOK 15 S5500FL, VIVOBOOK 15 V5050E, VIVOBOOK 15 V5050EA, VIVOBOOK 15 V5050EA1135, VIVOBOOK 15 V531F, VIVOBOOK 15 V531FA, VIVOBOOK 15 V531FL, VIVOBOOK 15 X513EA, VIVOBOOK 15 X513EP, VIVOBOOK 15 X513EQ, VIVOBOOK 15 X531F, VIVOBOOK 15 X531FA |
| Battery Type | 3 Cell Lithium-Ion |
| Battery Voltage | 11.52V |
| Battery Capacity | 3550MAH |
Questions about this item
Which ASUS Vivobook 15 models accept the B31N1842 part number for a direct battery swap?
The B31N1842 fits Vivobook 15 K531, K531F, M513, S531, S531F, S531FA, S531FL, S5500F, S5500FL, V5050E, V5050EA, V5050EA1135, V531F, V531FA, V531FL, X513EA, X513EP, X513EQ, X531F and X531FA.
Will the 11.52 V, 3550 mAh GreenTech cell run safely in a laptop that originally shipped with the 0B200-03440000 OEM pack?
Yes — the replacement matches the OEM voltage of 11.52 V and capacity of 3550 mAh, uses the same three-cell lithium-ion layout and includes circuit protection, so it works with the original charging circuit.
How can I confirm the new 42 Wh battery is recognised correctly after installation?
Power on the notebook, open the OS battery report or BIOS information screen and verify the reported design capacity reads 42 Wh, the voltage shows 11.52 V and the cycle count starts at zero.
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