Asus Zenbook UX330UA C31N1602 Compatible Battery 11.55V 4800mAh
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Asus Zenbook UX330UA C31N1602 Compatible Battery 11.55V 4800mAh - 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 UX330UA C31N1602 Compatible Battery 11.55V 4800mAh - is backordered and will ship as soon as it is back in stock.
Voltage
11.55V
Amp
4800mAh
Asus Zenbook UX330UA Series — 11.55V Li-Polymer Replacement Battery (C31N1602)
This is an 11.55V, 4800mAh (55.44Wh) lithium-polymer battery for the Asus Zenbook UX330UA series, including the FB161T, GL192, FB019T, FC115T, and over 46 additional variants. It replaces OEM part numbers C31N1602 and 0B200-02090000. The slim 4.10mm cell profile matches the UX330UA's tight chassis clearance exactly.
- UX330UA platform compatibility: All UX330UA variants share the same 11.55V three-cell configuration, identical connector pinout, and the same BMS handshake protocol — which is why one cell fits the full model range without firmware or connector changes.
- Bench tested on actual hardware: We ran this cell on a UX330UA board under a mixed CPU-plus-display load. The BMS held the 11.55V rail steady and reported state-of-charge accurately to the ACPI layer after two calibration cycles.
- Post-install discharge cycle: After fitting this cell, 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 appears after every cell swap on the UX330UA.
BIOS reporting poor battery health after fitting the replacement cell
The UX330UA BIOS reads health data from EEPROM registers that carry figures from the original cell. A fresh cell has no matching EEPROM history, so the BIOS flags it as degraded immediately after install. This is a calibration gap, not a fault with the replacement. Run one full discharge-to-hibernate followed by an uninterrupted full charge. After two to three cycles, the fuel gauge IC overwrites the stale EEPROM data and the health warning clears.
Laptop shuts down suddenly at 20–30% charge shown on screen
This happens when the fuel gauge IC is still calibrated to the old cell's voltage curve. The new cell hits a voltage cliff under combined CPU and display load before the OS gauge reaches zero, triggering an immediate shutdown. The OS is reading a curve that no longer matches the physical cell. Discharge fully to hibernate cutoff twice in a row — each cycle trains the fuel gauge IC against the new cell's actual voltage profile and the early shutdowns stop.
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 the battery Wh rating as lower than the 55.44Wh spec — is something wrong with the cell?
Nothing is wrong with the cell. The figure Windows displays is pulled from the EEPROM design-capacity field, which still holds the worn-out original cell's last recorded value. After two full discharge-charge cycles, the fuel gauge IC updates that register against the actual chemistry and the reported Wh figure corrects itself. Check System Information again after the second full cycle.
The charge stops at 80% and the laptop refuses to go higher — is the battery faulty?
This is a BIOS-controlled charge limit, not a battery fault. Asus ships many UX330UA units with Battery Health Charging enabled in MyASUS or the UEFI firmware, which deliberately caps charge at 80% to reduce cell stress over time. Open MyASUS, go to Battery Health Charging, and switch the mode to Full Capacity. If MyASUS is not installed, enter BIOS on boot and check the Battery Care function setting there.
Windows shows "0% available (plugged in, charging)" and the percentage never moves after fitting the replacement — what's happening?
The fuel gauge IC lost its reference point when the old cell was removed and has not yet established one for the new cell. Leave the laptop plugged in and powered on for at least two hours without interrupting the charge. If the gauge remains stuck at 0%, shut down fully, leave it on charge for four hours, then power on — the ACPI battery driver re-initialises on a cold boot and the gauge typically resumes normal reporting from that point.
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