About this replacement
Asus VivoBook Flip 14 TP410UA / TP410UR Series — 11.52V Li-Polymer Replacement Battery (B31N1705)
This is an 11.52V, 3650mAh (42.05Wh) Li-Polymer replacement battery for the Asus VivoBook Flip 14 convertible laptop. It fits the TP410UA, TP410UR, and TP410UF model lines, covering the EC229T, EC084T, EC002T, IB72T variants and over 56 additional configurations. OEM part numbers B31N1705, B31N1705-1, 0B200-02660000, and 0B200-02660100 all cross to this cell.
- TP410 series compatibility: The TP410UA, TP410UR, and TP410UF share the same 11.52V three-cell architecture, connector pinout, and BMS handshake protocol — which is why one cell covers the full range. Swapping across sub-variants does not require firmware changes.
- Bench tested on actual hardware: We ran this cell through charge-discharge cycles on a TP410UA and confirmed the BMS negotiation completed correctly — the EC recognised the pack, reported cell voltage accurately, and the charge controller reached termination voltage without error flags.
- Post-install learn cycle on the TP410: After fitting, run the laptop down to hibernate cutoff, then charge uninterrupted to 100% without using the machine. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears after every cell swap on this platform.
Why the TP410 BIOS reports poor battery health immediately after a cell swap
The TP410's embedded controller reads cycle count and health data stored in the old cell's EEPROM. When a new cell goes in, that EEPROM data resets, and the EC briefly interprets the mismatch as a degraded or unknown pack. This is not a fault with the replacement cell — it is a calibration gap between the new chemistry and the EC's stored baseline. Running one complete discharge-to-hibernate then a full uninterrupted charge resolves it. After that cycle, the BIOS health indicator and Windows battery report will reflect the actual state of the new cell.
TP410 shutting down at 20–30% charge shown on screen
This happens when the fuel gauge IC has not yet calibrated against the new cell's voltage curve. The IC still uses the old cell's discharge profile, so it misreads remaining capacity — the displayed percentage does not match actual cell voltage, and the laptop hits the low-voltage cutoff before the screen shows 0%. The fix is two to three full discharge and charge cycles without interruption. After calibration, the EC tracks cell voltage accurately and the early shutdown stops — confirmed at cutoff voltage of approximately 9V across the three cells.