Asus Zenbook Pro UX550VD C42N1630 15.4V Replacement Battery
This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.
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Asus Zenbook Pro UX550VD C42N1630 15.4V Replacement 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 Zenbook Pro UX550VD C42N1630 15.4V Replacement Battery - is backordered and will ship as soon as it is back in stock.
Voltage
15.4V
Amp
4650mAh
Asus Zenbook Pro UX550VD / UX550VE Series — 15.4V Li-Polymer Replacement Battery (C42N1630)
This is a 15.4V, 4650mAh (71.61Wh) Li-Polymer battery for the Asus Zenbook Pro UX550VD and UX550VE series laptops. It replaces OEM part numbers C42N1630, 0B200-02520000, and C42PHCH. Fit covers over 88 UX550 variants including the BN082R, BO165T, BN120T, and BO031T.
- UX550 platform fitment: The UX550VD and UX550VE share the same 4-cell 15.4V battery architecture, connector pinout, and BMS handshake protocol. Any board revision in this series draws from the same voltage rail, so one cell SKU covers the full range without modification.
- Bench tested on actual hardware: We ran this cell on a UX550VD board and confirmed the BMS accepted the new cell without fault codes. Charge cycles completed to 100% and the protection circuit responded correctly to load spikes during CPU-intensive tasks.
- Post-install discharge cycle: After fitting, run the laptop on battery until it hibernates at the cutoff threshold, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell data and clears the inaccurate health warning that appears after every cell swap on this platform.
BIOS reporting poor battery health immediately after fitting the C42N1630
The UX550 BIOS stores learned capacity data from the previous cell in non-volatile memory. When you swap in a new cell, that stored data no longer matches the new cell's EEPROM profile, and the firmware flags it as degraded. This is not a fault with the replacement cell — it is a calibration mismatch. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100%, and the BIOS learn cycle will rewrite its stored values. After two or three cycles, the health indicator should read normal.
Zenbook Pro shutting down at 20–30% charge shown on screen
This happens when the fuel gauge IC's stored discharge curve no longer matches the actual cell chemistry — the percentage shown is based on old calibration data, not real remaining capacity. Under full CPU plus display load, the cell hits its minimum cutoff voltage before the OS gauge reaches zero, triggering an immediate shutdown. The fix is to let the laptop run down fully to hibernate-cutoff at least twice so the fuel gauge IC can map the new cell's actual voltage curve. After two calibration cycles, the shutdown threshold should align with what the screen displays, and the gauge will track accurately from around 3.5V per cell at the low end.
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
Windows shows my Asus Zenbook Pro battery as "0% available (plugged in)" right after I installed the new cell — what's wrong?
The fuel gauge IC is reading EEPROM data left over from the old cell and cannot reconcile it with the new cell's charge state. Plug in, let it charge uninterrupted to 100%, then unplug and discharge fully to hibernate. After that first complete cycle, the IC recalibrates against the new cell and the 0% reading clears. If it persists past two cycles, check Device Manager to confirm the battery driver re-enumerated after the swap.
My replacement C42N1630 stopped charging at 80% and won't go higher — is the cell faulty?
Almost certainly not. The UX550 BIOS includes a battery charge limit setting that caps charging at 80% to reduce long-term wear when the laptop stays plugged in. Open the Asus Battery Health Charging utility (MyASUS or the older Battery Health Charging app in Windows) and switch the mode from "Balanced" or "Maximum Lifespan" to "Full Capacity." The charge ceiling will lift to 100% immediately.
System info shows this battery as 71Wh but Windows is reporting a much lower designed capacity — why don't they match?
Windows pulls the designed capacity figure from the cell's EEPROM register, which stores the manufacturer's rated value at time of programming. The 71.61Wh figure is calculated from the nominal voltage and rated cell capacity and will not always match what the EEPROM broadcasts. Run two full discharge-to-100% cycles and the reported full-charge capacity in Windows Battery Report (run `powercfg /batteryreport` in Command Prompt) will converge closer to the actual cell rating as the fuel gauge IC updates its learned values.
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