Asus ROG Zephyrus G14 C41N1908 15.4V 4850mAh Battery
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Asus ROG Zephyrus G14 C41N1908 15.4V 4850mAh Battery - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Asus ROG Zephyrus G14 C41N1908 15.4V 4850mAh Battery - is backordered and will ship as soon as it is back in stock.
Voltage
15.4V
Amp
4850mAh
Asus ROG Zephyrus G14 GA401IV Series — 15.4V Li-Polymer Replacement Battery (C41N1908)
This is a 15.4V, 4850mAh (74.69Wh) Li-Polymer battery for the Asus ROG Zephyrus G14 GA401 series gaming laptop. It fits the GA401IV, GA401II, GA401IU, and related variants using OEM part number C41N1908. Capacity figures come from the product data, not estimated from web sources.
- GA401 series fit: All GA401-platform models share the same 15.4V four-cell Li-Polymer configuration, the same physical connector pinout, and the same BMS handshake protocol with the Asus EC firmware. A single cell swap covers all variants in the series without wiring or adapter changes.
- Bench tested on actual hardware: We cycled this cell on a GA401IV unit and confirmed the BMS accepted charge at the correct CC/CV profile, voltage held steady through a sustained CPU-plus-GPU load pass, and charge termination triggered cleanly at the expected cutoff threshold.
- Post-install calibration on the GA401: After fitting, run the laptop down to hibernate-cutoff under normal use — do not force shutdown — then charge uninterrupted to 100%. This gives the Asus EC firmware one complete learn cycle against the new cell and clears the inaccurate health warning that appears after every cell swap.
Why the GA401IV shuts down at 20–30% shown after a battery swap
The G14's EC firmware maps voltage curves from the old cell's EEPROM data onto the new cell's chemistry. When the new cell hits its actual voltage cliff under full CPU-plus-display load, the EC has no calibrated reference and triggers a hard shutdown before the gauge reaches zero. This is not a cell defect — it is a calibration gap. Run one complete discharge-to-hibernate cycle, let the EC relearn the voltage-to-capacity curve, and the premature shutdowns stop.
BIOS reporting battery health as poor or 0% immediately after replacement
The Asus BIOS reads health status from EEPROM registers that were written by the original cell over time. A fresh cell arrives with a different charge-cycle count and health register value, so the BIOS flags it as degraded on first boot. Enter the BIOS, navigate to Advanced → Power Management, and run the battery recalibration utility if present — or complete one full discharge-to-100% charge cycle with the lid open and the laptop idle. After recalibration, the health indicator will reflect the actual state of the new cell.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Asus
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-Polymer
- Battery Type: Li-Polymer
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My G14 shows 74Wh in the original specs but the system info now reports a different Wh rating after swapping the battery — is something wrong?
The Wh figure in Windows or HWiNFO is pulled from the EEPROM on the cell, and the rated value written there can differ slightly from the calculated Wh at the actual chemistry's nominal voltage. This replacement cell is rated 74.69Wh at 15.4V × 4850mAh — the math checks out. If the system shows a lower design capacity, run one full discharge-to-hibernate then a full charge; the EC will update its stored Wh estimate against the recalibrated curve.
The fuel gauge jumps around — showing 60%, then 45%, then 70% within minutes — for the first few days after fitting the new cell. Is the cell faulty?
The G14's fuel gauge IC uses a running model built from previous discharge curves. After a cell swap, that model is mismatched to the new cell's impedance and voltage profile, so the percentage estimate swings until the IC re-trains. We see this consistently on the bench for the first two to three full cycles. Discharge fully to hibernate-cutoff twice in a row, charging to 100% each time, and the gauge stabilises.
The new battery stops charging at 80% and won't go higher — Windows shows "plugged in, not charging" above that threshold.
This is the Asus Battery Care function in MyASUS or the BIOS charge-limit setting — it is firmware-controlled, not a fault with the cell. The G14 ships with an 80% charge ceiling enabled by default to reduce long-term cell stress. Open MyASUS, go to Customization → Battery Care Mode, and switch it to Full Capacity Mode. The battery will then charge to 100% on the next plug-in cycle.
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