Asus ROG Flow X13 Replacement Battery C41N2009 15.48V 3950mAh
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Asus ROG Flow X13 Replacement Battery C41N2009 15.48V 3950mAh - 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 Flow X13 Replacement Battery C41N2009 15.48V 3950mAh - is backordered and will ship as soon as it is back in stock.
Voltage
15.48V
Amp
3950mAh
Asus ROG Flow X13 GV301QH-K6028T — 15.48V Li-Polymer Replacement Battery (C41N2009)
This is a 15.48V, 3950mAh (61.15Wh) Li-Polymer battery for the Asus ROG Flow X13 series. It fits GV301QH, GV301QC, GV301QE, and GV301QU variants — all share the same 4-cell Li-Polymer pack identified by OEM part number C41N2009 (also listed as 0B200-03850000). The ROG Flow X13 is a 13.4-inch gaming ultrabook, so this cell runs under both sustained CPU load and display-intensive gaming workloads.
- GV301 series compatibility: All GV301 variants use the same 15.48V voltage rail and the same 4-cell flat-pack form factor. The BMS connector pinout and physical dimensions (260.30 × 108.60 × 5.60mm) match across the entire GV301 lineup, so one part number covers all 70+ models in this series.
- Bench tested on actual hardware: We cycled this cell through full charge and discharge on a GV301 board. The BMS negotiated charge termination correctly, balancing cells without error flags. Under combined CPU and GPU load, voltage held stable and no protection cutoff was triggered.
- Post-install recalibration on the ROG Flow X13: After fitting, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that almost always appears after a cell swap on this platform.
BIOS reporting poor battery health immediately after replacement
The ROG Flow X13 BIOS reads health data stored in the cell's EEPROM. When a new cell goes in, the EEPROM data does not match the charge history the BIOS expected from the old pack. The system flags this as degraded health — not because the cell is faulty, but because the learn cycle has not run yet. Complete one full discharge-to-hibernate followed by an uninterrupted charge to 100% and the BIOS will rewrite its health baseline against the new cell's actual data.
Laptop shuts down at 20–30% remaining after battery swap
This happens because the fuel gauge IC is still calibrated to the old cell's discharge curve. The new cell reaches a voltage cliff under combined CPU and display load before the OS gauge reaches 0%, so the system cuts power while showing charge remaining. The fuel gauge needs two to three full calibration cycles — full discharge to hibernate, full recharge to 100% — to map the new cell's curve accurately. After three cycles, the shutdown threshold should align with the displayed percentage.
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 ROG Flow X13 shows "Battery health: poor" in BIOS right after I fitted the new cell — is the replacement faulty?
It's not a fault with the cell. The BIOS reads health data from the old cell's EEPROM, and a fresh cell has no charge history stored yet, so the BIOS flags it as degraded. Run one full discharge to hibernate-cutoff, then charge uninterrupted to 100% — this forces the BIOS to run a learn cycle and rewrite its health baseline against the new cell. After that cycle, the poor health warning clears.
Windows battery meter is jumping around wildly — showing 60%, then 45%, then 70% within minutes of each other. What's going on?
The fuel gauge IC inside the laptop is still using the discharge curve it mapped for the old, degraded cell. A new cell with different actual capacity throws the IC's estimates off completely. It needs two to three full calibration cycles — discharge fully until the laptop hibernates, then charge to 100% without interruption — before the readings stabilise. After the third cycle, the gauge should track within a few percent of actual remaining charge.
The system info page shows the battery Wh rating as different from what's listed on the replacement cell — should I be worried?
The figure shown in system info is pulled from the EEPROM on the cell, and EEPROM-stored ratings sometimes differ slightly from the actual measured chemistry of a replacement cell. The rated capacity in product data is 61.15Wh at 15.48V — that is the correct reference figure. Run the BIOS battery learn cycle once (full discharge to hibernate, then full charge to 100%) and the reported value will update to reflect the new cell's actual data.
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