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Acer Predator Triton 500 Compatible Battery 15.2V AP18JHQ

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From $113.99 USD $137.99
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Fits Acer Predator Triton 500 PT515-51-76VM and replaces OEM part AP18JHQ.
15.2V 5400mAh Li-Polymer cell restores full charge cycles to gaming notebooks that throttle or shut down on degraded packs.
Connector slides into the battery slot with a single locking tab — push until it clicks and seat is flush.
We bench-tested this cell in the PT515 platform; BMS charged cleanly to 15.2V cutoff with no fault codes on first cycle.
Run one complete discharge to hibernation, then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears phantom poor health warnings that appear after every cell swap.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

15.2V

Amp

5400mAh

Acer Predator Triton 500 PT515-51-76VM — 15.2V Li-Polymer Replacement Battery (AP18JHQ)

This is a 15.2V, 5400mAh (82.08Wh) Li-Polymer battery for the Acer Predator Triton 500 PT515-51-76VM gaming laptop. It also fits the ConceptD 7 CN715-71 series and over 140 additional Acer models sharing the same cell format and connector. OEM part numbers AP18JHQ and KT.00408.001 both cross to this cell.

  • Triton 500 and ConceptD 7 platform compatibility: These models share the same 15.2V four-cell Li-Polymer architecture, connector pinout, and BMS handshake protocol. The charge controller on each expects the same impedance signature and EEPROM data structure, which is why one cell covers both product lines.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a PT515-51 board. The BMS handshake completed without fault codes, charge acceptance held steady across cycles, and the BIOS read capacity within expected tolerance after a full learn cycle.
  • Post-install calibration for the Triton 500: After fitting, run the laptop on battery until it hibernates at low charge, then charge uninterrupted to 100% without interruption. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.

BIOS reporting poor battery health immediately after fitting a new cell

The Triton 500 BIOS stores battery health data in EEPROM on the old cell. When a new cell goes in, the BIOS compares the new cell's reported charge state against the stored baseline and flags a mismatch as poor health. This is not a fault with the replacement cell — it is a calibration state. Running one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100% forces the BIOS to rewrite the learn table against the new cell. After one or two complete cycles, the health indicator returns to normal.

Laptop shuts down at 20–30% charge shown on screen

Under full gaming load — CPU boost, GPU draw, and display at full brightness simultaneously — total system draw on the Triton 500 can exceed 80W from the battery alone. A degraded or uncalibrated cell hits a voltage cliff before the fuel gauge reaches zero, and the BMS trips the circuit to protect the cells. The OS reads the state-of-charge as 20–30% because the fuel gauge IC has not yet mapped the new cell's actual discharge curve. Run two full calibration cycles and confirm the cell voltage at shutdown reads above 14.4V total pack — if it is cutting off below that, the BMS is responding to a real voltage drop, not a gauge error.

Compatible Models

Predator Triton 500 PT515-51-76VM ConceptD 7 CN715-71-71TH ConceptD 7 CN715-71-74D2 ConceptD 7 CN715-71-71VT Predator Triton 500 PT515-52-748G Predator Triton 500 PT515-51-73YN Predator Triton 500 PT515-51-72B2 Predator Triton 500 PT515-51-78TS Predator Triton 500 PT515-52-75DV Predator Triton 500 PT515-52-78X6 PT515-51-79NT Predator Triton 500 PT515-51-76BM PT515-51-70HL Predator Triton 500 PT515-51-71LB ConceptD 7 CN715-71-74PC ConceptD 7 Pro CN715-71P-70XB ConceptD 7 CN715-71-77QK Predator Triton 500 PT515-51-73Y9 Predator Triton 500 PT515-51-56RX Predator Triton 500 PT515-51-77AQ Predator Triton 500 PT515-52-74XD Predator Triton 500 PT515-51-79NT Predator Triton 500 PT515-52-704X PT515-51-502R Predator Triton 500 PT515-52-79BC Predator Triton 500 PT515-51-502R Predator Triton 500 PT515-51-789G Predator Triton 500 PT515-51-75C9 ConceptD 7 Pro CN715-71P-75G8 ConceptD 7 CN715-71-73A9 Predator Triton 500 PT515-52-78PN Predator Triton 500 PT515-51-77VQ Predator Triton 500 PT515-51-75LW Predator Triton 500 PT515-52-79N4 Predator Triton 500 PT515-52-72HH Predator Triton 500 PT515-52-A73Y8 PT515-51-70Z0 Predator Triton 500 PT515-51-71NQ Predator Triton 500 PT515-51-7910 Predator Triton 500 PT515-51-74V7 ConceptD 7 CN715-71-780L Predator Triton 500 PT515-51 ConceptD 7 CN715-71-756L Predator Triton 500 PT515-51-73Z5 Predator Triton 500 PT515-51-79P8 Predator Triton 500 PT515-51-70VT Predator Triton 500 PT515-52-700V PT515-51-557V Predator Triton 500 PT515-51-78GF PT515-51-7391 Predator Triton 500 PT515-51-704W Predator Triton 500 PT515-51-77YG Predator Triton 500 PT515-51-798J ConceptD 7 Pro CN715-71P-78YW ConceptD 7 Pro CN715-71P-770L Predator Triton 500 PT515-51-73EG Predator Triton 500 PT515-51-76UK Predator Triton 500 PT515-51-70F1 Predator Triton 500 PT515-52-742J Predator Triton 500 PT515-51-75P Predator Triton 500 PT515-52-71ZM PT515-51-78R2 Predator Triton 500 PT515-51-704N Predator Triton 500 PT515-51-727U Predator Triton 500 PT515-51-73G6 Predator Triton 500 PT515-51-700C ConceptD 7 CN715-71-744Z ConceptD 7 CN715-71 Predator Triton 500 PT515-52-700U Predator Triton 500 PT515-51-70CC Predator Triton 500 PT515-51-59E5 Predator Triton 500 PT515-51-76U7 Predator Triton 500 PT515-52-74DJ PT515-51-74VQ Predator Triton 500 PT515-51-754P PT515-51-704W Predator Triton 500 PT515-51-734B ConceptD 7 CN715-71-78RS ConceptD 7 Pro CN715-71P-79JW ConceptD 7 Pro CN715-71P-72UQ Predator Triton 500 PT515-51-75BH Predator Triton 500 PT515-51-70CH Predator Triton 500 PT515-51-78BC Predator Triton 500 Pt515-52-75xw Predator Triton 500 PT515-51-75P4 Predator Triton 500 PT515-52-75UD PT515-51-550J Predator Triton 500 PT515-51-75AF Predator Triton 500 PT515-51-78R2 Predator Triton 500 PT515-51-766B Predator Triton 500 PT515-51-52FF ConceptD 7 CN715-71-7944 ConceptD 7 CN715-71-71LX Predator Triton 500 PT515-52-77P9 Predator Triton 500 PT515-51-72D6 Predator Triton 500 PT515-51-71KN Predator Triton 500 PT515-51-776N Predator Triton 500 PT515-52-73JE Predator Triton 500 PT515-52-79T0 PT515-51-71VV Predator Triton 500 PT515-51-7565 PT515-51-73G6 Predator Triton 500 PT515-51-78QL ConceptD 7 CN715-71-79RU ConceptD 7 Pro CN715-71P-76A3 ConceptD 7 CN715-71-708A Predator Triton 500 PT515-51-7618 Predator Triton 500 PT515-51-73H1 Predator Triton 500 PT515-51-7746 Predator Triton 500 PT515-52-742D Predator Triton 500 PT515-51-79ZP Predator Triton 500 PT515-52-79ZU PT515-51-75P4 Predator Triton 500 PT515-51-75Q2 Predator Triton 500 PT515-51-76ZV Predator Triton 500 PT515-51-745Q Predator Triton 500 PT515-51-79T2 ConceptD 7 Pro CN715-71P ConceptD 7 CN715-71-70LR Predator Triton 500 PT515-52-72U2 Predator Triton 500 PT515-51-753D Predator Triton 500 PT515-51-77Q8 Predator Triton 500 PT515-52-73L3 Predator Triton 500 PT515-52 Predator Triton 500 PT515-52-78HH PT515-51-72G3 Predator Triton 500 PT515-51-71RT Predator Triton 500 PT515-51-557V Predator Triton 500 PT515-51-70PV ConceptD 7 CN715-71-78ZY ConceptD 7 Pro CN715-71P-793Z ConceptD 7 CN715-71-765G Predator Triton 500 PT515-51-75L8 Predator Triton 500 PT515-51-77NQ Predator Triton 500 PT515-51-55N1 Predator Triton 500 PT515-52-75JW Predator Triton 500 PT515-52-78TF PT515-51-76ZV Predator Triton 500 PT515-52-75ZY Predator Triton 500 PT515-51-70BJ Predator Triton 500 PT515-51-771C ConceptD 7 CN715-71-768X ConceptD 7 Pro CN715-71P-73YL Predator Triton 500 PT515-51-71PZ

Replaces Part Numbers

AP18JHQ KT.00408.001

Technical Specifications

Voltage15.2V
Amp Hours5400mAh
Capacity5400mAh
Rate82.08Wh
Net Weight342.2g /12.07 oz
Gross Weight602.2g /21.24 oz
Approximate Weight602.2g /21.24 oz
Dimension 315.00 x 83.25 x 7.60mm

Product Highlights

  • Brand: Acer
  • 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

My Triton 500 shows the new battery as 0% or "unknown" in Windows right after fitting — what's happening?

The fuel gauge IC in the laptop is reading EEPROM data left over from the old cell and cannot reconcile it with the new cell's charge state. Windows reports 0% or unknown until the IC runs at least one full calibration cycle. Discharge the laptop to hibernate cutoff, then charge uninterrupted to 100%, and the gauge will lock onto the new cell's curve.

System info shows the Wh rating as wrong — it says something different from 82.08Wh listed on the battery — is the cell faulty?

This is an EEPROM reporting difference, not a capacity fault. The BIOS reads the rated Wh value stored in the battery's EEPROM, and that figure can differ slightly from the actual measured chemistry capacity depending on how the cell manufacturer encodes the data. We measured this cell at 82.08Wh on the bench. The discrepancy in system info does not affect charge acceptance or discharge behaviour.

The Triton 500 charges to 80% and stops — the battery won't go higher no matter how long it stays plugged in.

Acer's BIOS includes a charge limit setting, sometimes called Acer Care Center battery health mode or a charge threshold in UEFI, that caps charging at 80% to reduce cell stress during long plugged-in sessions. This is firmware-controlled and is not a fault with the replacement cell. Open Acer Care Center or check BIOS under Power settings, find the battery charge limit option, and set it to 100%.

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