About this replacement
Acer Predator Triton 500 SE PT516-52s-72FE — 15.2V Li-ion Replacement Battery (AP20BHU)
This is a 15.2V, 6350mAh (96.52Wh) Li-ion replacement battery for the Acer Predator Triton 500 SE PT516-52s-72FE and a broad range of compatible Acer Predator and ConceptD 16-inch notebooks. It replaces a degraded or failed AP20BHU cell to restore portable power to the system. Fit the OEM part number AP20BHU before ordering to confirm compatibility with your specific board revision.
- Predator Triton and ConceptD platform fit: These Acer notebooks share a common 15.2V four-cell Li-ion architecture and the same AP20BHU connector pinout and BMS handshake protocol — which is why one cell covers the Triton 500 SE, Triton 300 SE, and ConceptD 5 lines without modification.
- Bench tested on actual hardware: We cycled this cell through charge, full-load discharge, and charge-resume on a PT516-series board. The BMS accepted the cell without fault flags, charge current ramped correctly through CC/CV stages, and the protection circuit responded to over-current events as expected.
- Post-install calibration on Acer Predator notebooks: After fitting this cell, run one full discharge until the system hibernates on its own, then charge uninterrupted to 100% without using the laptop. This forces the BIOS battery learn cycle to reset against the new cell chemistry and clears the inaccurate health warning that appears on almost every AP20BHU swap.
BIOS reporting battery health as poor immediately after fitting a new AP20BHU
Acer's BIOS reads battery health against EEPROM data written by the original factory cell. When you swap the cell, the EEPROM baseline no longer matches the new cell's charge characteristics, so the firmware flags the battery as degraded even though the cell is new. This is not a fault with the replacement — it is a data mismatch. Running one full calibration cycle (discharge to hibernate, then uninterrupted charge to 100%) rewrites the reference data and clears the warning on the next boot. If the warning persists beyond two calibration cycles, check that BIOS is up to date, as some PT516 firmware revisions had a bug in health reporting that a BIOS update resolves.
Laptop shutting down at 20–30% remaining under gaming or GPU load
Under combined CPU, GPU, and display load, the Predator Triton 500 SE draws bursts that can pull cell voltage below the BMS cutoff threshold before the fuel gauge reaches zero — this is called a voltage cliff. The fuel gauge IC calibrates its percentage estimate against resting voltage, not load voltage, so the displayed percentage looks fine right up until the shutdown. Run the calibration cycle described above first, as an uncalibrated fuel gauge makes this worse. If shutdowns continue after calibration, check that the cell voltage at hibernate is at or above 13.0V — a cell dropping below that under moderate load has degraded capacity and should be replaced again.