Asus VivoBook Flip 14 TP412UA C31N1733 Replacement Battery 11.55V
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Asus VivoBook Flip 14 TP412UA C31N1733 Replacement Battery 11.55V - 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.
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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 VivoBook Flip 14 TP412UA C31N1733 Replacement Battery 11.55V - is backordered and will ship as soon as it is back in stock.
Voltage
11.55V
Amp
3550mAh
Asus VivoBook Flip 14 TP412UA Series — 11.55V Li-Polymer Replacement Battery (C31N1733)
This is a Li-Polymer replacement battery for the Asus VivoBook Flip 14 TP412UA series 2-in-1 convertible laptop. It fits models including the EC034T, EC075T, EC173T, and EC036T variants. Rated at 11.55V and 3550mAh (41Wh), it matches the OEM specification under part numbers C31N1733, 0B200-02970000, and 0B200-02970100.
- TP412UA series compatibility: All TP412UA variants share the same 11.55V three-cell architecture, connector pinout, and BMS handshake protocol. The power management IC on this board authenticates via the same EEPROM signature across the full EC-suffix range, so one cell fits the entire lineup.
- Bench tested on actual hardware: We ran this cell on a TP412UA board and confirmed the BMS completed its handshake without fault codes. The charge controller accepted the cell and stepped through its CC/CV charge stages correctly with no thermal cutoff events.
- Post-install calibration on the TP412UA: After fitting this cell, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell's actual capacity and clears the inaccurate health warning that typically appears after a cell swap on this platform.
TP412UA shutting down at 20–30% shown on the fuel gauge
This happens when the fuel gauge IC is still calibrated to the old degraded cell. The new cell has a steeper voltage curve than the worn one, so the IC misreads state-of-charge and triggers shutdown long before the cell is actually depleted. The fix is a full calibration cycle: discharge to automatic hibernate, do not force power off early, then charge to 100% without interruption. After two or three of these cycles, the gauge IC maps the new cell's voltage curve and the shutdowns stop.
BIOS reporting battery health as "poor" or "replace" immediately after swap
The Asus BIOS reads health status from EEPROM data written by the old cell's onboard fuel gauge — it does not re-evaluate the physical cell on first boot. Until the battery learn cycle completes, the system displays the previous cell's degraded health record. Run the TP412UA's built-in battery calibration: hold the power button off, plug in AC power, and let it charge fully before booting. One complete charge–discharge–charge sequence overwrites the stale EEPROM health data and clears the warning. After the cycle, the BIOS should read the health status against 41Wh and report correctly.
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
Why does Windows show the wrong Wh rating in Device Manager after fitting this battery?
The Wh figure Windows reports is pulled from the EEPROM on the battery's fuel gauge IC, which stores the rated capacity written at manufacture — not the live measured value. On a fresh cell this sometimes shows a slightly different number than 41Wh until the fuel gauge IC completes its first calibration cycle against actual charge throughput. Run one full discharge to hibernate cutoff and one uninterrupted charge to 100%. After that cycle, Windows Battery Report should align with the 41Wh rating.
The TP412UA fuel gauge jumps around wildly — 60%, then 45%, then 55% within minutes. What's wrong?
The fuel gauge IC on the TP412UA board uses coulomb counting calibrated to the old cell's internal resistance profile. A new cell has significantly lower internal resistance, so the IC's state-of-charge algorithm produces erratic readings until it builds a fresh resistance model. This is not a fault with the replacement cell. Run two or three full discharge-to-hibernate and charge-to-100% cycles without interrupting midway, and the gauge will stabilise as the IC maps the new cell's actual characteristics.
New battery charges fine but stops at 80% and won't go higher — is the cell faulty?
This is almost always the Asus Battery Health Charging feature in MyAsus or the BIOS, not a cell fault. Asus ships many TP412UA units with an 80% charge limit enabled by default to reduce long-term cell stress during AC-connected use. Open the MyAsus app, go to Battery Health Charging, and switch the mode from "Balanced" to "Full Capacity Mode." If MyAsus is not installed, access the setting in BIOS under Advanced → Battery Health Charging and disable it. The cell will then charge to 100%.
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