About this replacement
Asus NovaGo TP370QL Series — 15.4V Li-Polymer Replacement Battery (C41N1718)
This is a 15.4V, 3300mAh (50.82Wh) Li-Polymer replacement battery for the Asus NovaGo TP370QL 2-in-1 convertible laptop. It fits the TP370QL-EL001T, TP370QL-EL002T, TP370QL-EL003T, and related variants. It replaces OEM part numbers C41N1718, 0B200-02810000, 0B200-02810100, and C41PSJH.
- NovaGo TP370QL platform fit: The full TP370QL family shares the same 15.4V four-cell battery rail, connector pinout, and BMS handshake protocol. All listed variants draw from the same OEM battery spec, so one cell fits the entire lineup without modification.
- Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the TP370QL platform. The BMS handshake completed cleanly, charge termination triggered correctly at capacity, and the cell held voltage within spec under combined CPU and display load.
- Post-install calibration on the NovaGo: After fitting this cell, run the laptop down to hibernate-cutoff under normal use, 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 this platform.
BIOS reporting poor battery health after replacing the TP370QL cell
The TP370QL BIOS reads health data stored in the old cell's EEPROM and compares it against the new cell on first boot. Because the new cell has no charge history, the BIOS flags it as degraded or unknown — this is a data mismatch, not a faulty battery. Running one full discharge-to-hibernate followed by a full uninterrupted charge completes the battery learn cycle and rewrites the BIOS health register. After two to three cycles, the reported health figure stabilises and the warning clears. If the warning persists beyond three cycles, check BIOS version — some early TP370QL firmware has a known health-reporting bug addressed in later updates.
TP370QL shutting down unexpectedly at 20–30% charge shown
This happens when the cell voltage drops below the BMS cutoff threshold under full load before the fuel gauge IC reaches 0%. The TP370QL's combined CPU and touchscreen draw creates a sharp voltage cliff in the lower charge range, and if the fuel gauge IC hasn't calibrated to the new cell yet, it misreads remaining capacity by a wide margin. The fix is to let the laptop discharge fully to hibernate under real workload — not idle — so the fuel gauge IC maps the actual voltage curve of the new cell. After two full discharge-charge cycles, the gauge reads within 3–5% of actual, and the false shutdowns stop.