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Acer AP13F3N Aspire S7-392 Replacement Battery 7.5V 6250mAh

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Fits Acer Aspire S7-392 ultrabooks, replaces OEM part AP13F3N.
7.5V, 6250mAh lithium-polymer cell sustains the CPU and display load across work sessions without mid-use shutdowns.
Connector slides into the battery slot with a single locking tab; orientation keyed to prevent reverse insertion.
We bench-tested the BMS on first charge at 0.5C rate — no early cutoff, voltage curve held steady to full capacity.
After installation, run one full discharge to hibernate then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears the inaccurate health warning that appears on every S7-392 cell swap.
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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.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

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

Voltage

7.5V

Amp

6250mAh

Acer Aspire S7-392 — 7.5V Li-Polymer Replacement Battery (AP13F3N)

This is a 7.5V, 6250mAh (46.88Wh) lithium-polymer replacement battery for the Acer Aspire S7-392 ultrabook. It fits the full S7-392 range, including the S7-392-54208g12tws, S7-392-54208g25tws, and S7-392-9890 variants. OEM part number AP13F3N confirms compatibility across these models.

  • S7-392 platform fit: Every S7-392 variant runs the same 7.5V two-cell Li-Polymer configuration with a shared connector and BMS handshake protocol. The AP13F3N is the single battery spec across all S7-392 sub-models, so voltage rail and connector pin-out are consistent across the lineup.
  • Bench tested on actual hardware: We ran this cell on an S7-392 chassis and confirmed BMS handshake, charge acceptance from 0% to 100%, and correct Wh reporting in Acer's power management interface. The protection circuit responded correctly to over-charge and over-discharge thresholds.
  • Post-install calibration for the S7-392: After fitting this cell, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears in Windows after every cell swap on this platform.

Why the S7-392 reports poor battery health immediately after a cell swap

The S7-392 BIOS stores charge cycle count and health data in EEPROM on the original battery's protection board. When a new cell is installed, the BIOS reads unfamiliar EEPROM values and flags the battery as degraded or unknown. This is a firmware read mismatch, not a fault with the replacement cell. Running the battery learn cycle — full discharge to hibernate then uninterrupted charge to 100% — lets the BIOS recalibrate against the new cell's actual chemistry and clears the warning.

S7-392 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 maps percentage to voltage using data from the old, degraded cell, so it misjudges where the new cell's cutoff actually sits. Under combined CPU and display load, the laptop hits the real voltage floor before the displayed percentage reaches zero. Run two complete discharge-to-hibernate and full-charge cycles — after that, the fuel gauge IC re-anchors to the new cell and the shutdowns stop. Confirm the cell is holding above 7.2V under load before ruling out a BMS issue.

Compatible Models

Aspire S7-392 Aspire S7-392-54208g12tws Aspire S7-392-54208g25tws Aspire S7-392-9890 Aspire S7-392-6832 Aspire S7-392-9460 Aspire S7-392-6411 NX.MT5EK.001 Aspire S7-393-55208G25ews Aspire S7-392-74508G25tws Aspire S7-393-5853 Aspire S7-393-7451 Aspire S7-392-5427 Aspire S7-392-5626 Aspire S7-393-75508G25ews Aspire S7-392-7836 Aspire S7-392 Ultrabook Aspire S7-393-55204G25ews Aspire S7-393-7810 Aspire S7-392-6402 Aspire S7-392-9404 Aspire S7-392-9877 Aspire S7-391-6822 Aspire S7-393

Replaces Part Numbers

AP13F3N

Technical Specifications

Voltage7.5V
Amp Hours6250mAh
Capacity6250mAh
Rate46.88Wh
Net Weight205.8g /7.26 oz
Gross Weight465.8g /16.43 oz
Approximate Weight465.8g /16.43 oz
Dimension 267.64 x 137.24 x 3.89mm

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

Windows is showing my new AP13F3N battery as "0% available (plugged in)" right after fitting it — why won't it read the charge?

The S7-392 fuel gauge IC loses its calibration reference when the cell is swapped, and until it completes one full cycle it can report 0% or refuse to display a charge level at all. Plug in the AC adapter and leave the laptop on until charging completes without interruption. Then discharge fully to the point the laptop hibernates, and charge back to 100% without unplugging. After that cycle the IC re-anchors to the new cell and the gauge reads correctly.

My replacement battery shows the wrong Wh rating in Acer's power management — it says 35Wh instead of 46.88Wh. Is the cell faulty?

The Wh figure displayed in Acer's power management pulls from EEPROM data embedded in the old battery's protection circuit — not from the new cell's actual chemistry. The replacement cell carries its own EEPROM values, which the BIOS may misread for the first few cycles before completing a learn cycle. Run one full discharge-to-hibernate followed by an uninterrupted charge to 100%. After that, the BIOS re-reads the EEPROM correctly and the Wh rating updates to reflect the actual 46.88Wh capacity.

The S7-392 charges the new battery to exactly 80% then stops — the charge indicator goes off and nothing happens after that.

This is a BIOS-controlled charge limit, not a fault with the replacement cell. Acer's firmware on the S7-392 includes a battery health mode that caps charging at 80% to reduce long-term cell stress — it is independent of which physical battery is installed. Open Acer Care Center or check the BIOS power settings under Battery Health Mode and switch it from the limited-charge option back to full capacity. Once disabled, the next charge cycle will run to 100%.

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