Compatible with Acer

Acer Predator Triton 300 SE PT314-51S-52ML Replacement Battery - Replaces AP20A7N

$56.54In stock

Why this battery

Fits Acer Predator Triton 300 SE PT314-51S-52ML and replaces OEM part numbers AP20A7N and KT.00407.010.
15.48V 3850mAh Li-Polymer cell delivers 59.6Wh to sustain this gaming laptop through extended sessions without mid-game shutdowns.
Connector seats flush into the battery bay slot with a single plastic locking tab on the left edge for secure retention.
We ran a full charge cycle on test hardware — the BMS accepted input without fault codes and held voltage under sustained CPU load.
After installation, discharge fully to system hibernation, then charge uninterrupted to 100% to reset the BIOS battery learn cycle and clear health warnings.

15.48V3850mAhLi-Polymer

Fits 80 models · Replaces 2 part numbers

Ship from

Ships from Hong Kong Warehouse · Delivery in 28-45 days

$56.54Quantity 1

About this replacement

Acer Predator Triton 300 SE PT314-51S Series — 15.48V Li-Polymer Replacement Battery (AP20A7N)

This is a 15.48V, 3850mAh (59.6Wh) Li-Polymer battery for the Acer Predator Triton 300 SE PT314-51S series gaming laptop. It replaces OEM part AP20A7N and KT.00407.010. Fit models include the PT314-51S-52ML, PT314-51S-52X6, PT314-51S-54AN, PT314-51S-54GB, and over 76 additional PT314-51S variants.

PT314-51S series fitment: All PT314-51S variants share the same 15.48V four-cell architecture, AP20A7N OEM part number, and identical BMS connector pinout — that is why one cell fits the full range without modification.
Bench tested on actual hardware: We cycled this cell through charge and full-load discharge on the PT314-51S platform. The BMS handshake completed without fault codes, and the cell held voltage within spec across sustained CPU plus GPU draw.
Post-install calibration on the Triton 300 SE: After fitting, run one full discharge until the laptop hibernates at low-battery 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 this platform.

BIOS reporting battery health as poor after replacement on the PT314-51S

The Triton 300 SE BIOS reads health data stored in the old cell's EEPROM and compares it against the new cell's reported state. A fresh cell has no accumulated cycle data, so the BIOS flags it as unknown or degraded on first boot. This is not a fault with the replacement cell — it is the firmware interpreting missing history as damage. Run one full discharge-to-hibernate followed by an uninterrupted charge to 100% to begin building cycle data the BIOS can read correctly.

Laptop shuts down at 20–30% shown after battery swap

The fuel gauge IC calibrates its discharge curve against the original cell's chemistry profile. With a new cell installed, the IC has no accurate model yet, so it misjudges the voltage-to-capacity curve and triggers shutdown before the display percentage reaches zero. Under full CPU plus display load the voltage cliff arrives faster than the gauge predicts. Run two to three full discharge-recharge cycles and the fuel gauge IC will recalibrate against the new cell — shutdowns should stop occurring above 5% after that.

Compatibility

Check your original model and part number before ordering.

Compatible brands

Acer

Fit Model

Predator Triton 300 SE PT314-51S-52MLPredator Triton 300 SE PT314-51S-52X6Predator Triton 300 SE PT314-51S-54ANPredator Triton 300 SE PT314-51S-54GBPredator Triton 300 SE PT314-51S-552LPredator Triton 300 SE PT314-51S-55FAPredator Triton 300 SE PT314-51S-569UPredator Triton 300 SE PT314-51S-56G7Predator Triton 300 SE PT314-51S-56RFPredator Triton 300 SE PT314-51S-57YJPredator Triton 300 SE PT314-51S-59SJPredator Triton 300 SE PT314-51S-70AEPredator Triton 300 SE PT314-51S-70AYPredator Triton 300 SE PT314-51S-70Q6Predator Triton 300 SE PT314-51S-715FPredator Triton 300 SE PT314-51S-71BQPredator Triton 300 SE PT314-51S-71DDPredator Triton 300 SE PT314-51S-71GVPredator Triton 300 SE PT314-51S-71K0Predator Triton 300 SE PT314-51S-71K8Predator Triton 300 SE PT314-51S-71UPPredator Triton 300 SE PT314-51S-71VRPredator Triton 300 SE PT314-51S-71VYPredator Triton 300 SE PT314-51S-71YCPredator Triton 300 SE PT314-51S-71YPPredator Triton 300 SE PT314-51S-72A9Predator Triton 300 SE PT314-51S-72F8Predator Triton 300 SE PT314-51S-7309Predator Triton 300 SE PT314-51S-730HPredator Triton 300 SE PT314-51S-73DWPredator Triton 300 SE PT314-51S-73NZPredator Triton 300 SE PT314-51S-73P9Predator Triton 300 SE PT314-51S-747EPredator Triton 300 SE PT314-51S-753TPredator Triton 300 SE PT314-51S-757UPredator Triton 300 SE PT314-51S-75B3Predator Triton 300 SE PT314-51S-75JMPredator Triton 300 SE PT314-51S-765XPredator Triton 300 SE PT314-51S-766LPredator Triton 300 SE PT314-51S-76E9Predator Triton 300 SE PT314-51S-76WHPredator Triton 300 SE PT314-51S-7795Predator Triton 300 SE PT314-51S-77A6Predator Triton 300 SE PT314-51S-77Y7Predator Triton 300 SE PT314-51S-786RPredator Triton 300 SE PT314-51S-78DDPredator Triton 300 SE PT314-51S-78U8Predator Triton 300 SE PT314-51S-797WPredator Triton 300 SE PT314-51S-79B6Predator Triton 300 SE PT314-51S-79G6Predator Triton 300 SE PT314-51S-79L0Predator Triton 300 SE PT314-51sPredator Triton 300 SE PT314-51s-51NZPredator Triton 300 SE PT314-51s-53D2Predator Triton 300 SE PT314-51s-53W3Predator Triton 300 SE PT314-51s-57U9Predator Triton 300 SE PT314-51s-58ARPredator Triton 300 SE PT314-51s-599SPredator Triton 300 SE PT314-51s-70CSPredator Triton 300 SE PT314-51s-70D2Predator Triton 300 SE PT314-51s-70D6Predator Triton 300 SE PT314-51s-71M1Predator Triton 300 SE PT314-51s-71UUPredator Triton 300 SE PT314-51s-721GPredator Triton 300 SE PT314-51s-728BPredator Triton 300 SE PT314-51s-72GNPredator Triton 300 SE PT314-51s-73N5Predator Triton 300 SE PT314-51s-74WTPredator Triton 300 SE PT314-51s-76DCPredator Triton 300 SE PT314-51s-76JLPredator Triton 300 SE PT314-51s-76QNPredator Triton 300 SE PT314-51s-77SSPredator Triton 300 SE PT314-51s-78BLPredator Triton 300 SE PT314-51s-78LZPredator Triton 300 SE PT314-51s-78T1Predator Triton 300 SE PT314-51s-7948Predator Triton 300 SE PT314-51s-79FKPredator Triton 300 SE PT314-51s-79GHPredator Triton 300 SE PT314-51s-79TYPredator Triton 300 Se Pt314-51s-72wr

Part Number

AP20A7NKT.00407.010

Specifications

Battery typeLi-Polymer

Voltage15.48V

Capacity3850mAh

Wh59.6Wh

Dimensions283.80 x 76.20 x 6.20mm

Weight

Connector

ChemistryLi-Polymer

Shipping and safety

UN number:

Standard carrier options available

UN38.3 documentation pending

Return warning

Customer reviews

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