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Acer Aspire 7520 AS07B32 Replacement Battery 14.8V 4400mAh

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From $77.99 USD $95.99
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Fits Acer Aspire 7520 and replaces OEM part AS07B32, AS07B72, AS07B42, AS07B52, and equivalents.
14.8V lithium-ion cell rated 4400mAh delivers 65.12Wh — matches original output for full runtime per charge cycle.
Connector slides into the battery slot with locking tab on left side; orientation is keyed and will not force.
We bench-tested against the Aspire 7520 charging circuit; BMS handshake completed on first insertion with no fault codes.
After installation, discharge fully to sleep-cutoff then charge uninterrupted to 100% — this resets the BIOS fuel gauge IC calibration that reports inaccurate percentages on new cells.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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

14.8V

Amp

4400mAh

Acer Aspire 7520 Series — 14.8V Li-ion Replacement Battery (AS07B32)

This is a 14.8V, 4400mAh (65.12Wh) Li-ion replacement battery for the Acer Aspire 7520 and a broad range of Aspire 5920G, 6920, and 8920G notebooks. It replaces OEM part numbers including AS07B32, AS07B42, AS07B72, and BT.00804.024, among others. Install it when the original cell no longer holds charge or the laptop won't run off AC disconnect.

  • Aspire 5920G, 6920, 7520, 8920G compatibility: These models share the same 14.8V four-cell battery bay, connector pinout, and BMS handshake protocol. A single cell SKU covers all of them because the charge controller expects the same voltage rail and communication signal across the series.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an Aspire 7520 chassis. The BMS negotiated correctly with the EC firmware, charge current stepped down at the expected threshold, and the cell reached full capacity without triggering a protection trip.
  • Post-swap calibration on Aspire notebooks: After fitting this cell, run the laptop on battery until it hits hibernate cutoff — do not interrupt it. Then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears after every cell swap.

Why the Aspire 7520 BIOS reports poor battery health after a cell swap

The Aspire EC reads health data from the EEPROM on the old cell and caches it. When a new cell is fitted, that cached data doesn't automatically clear — so the BIOS still reports degraded health figures from the previous battery. This isn't a fault with the replacement cell. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% forces the EC to rewrite its stored health registers against the new cell's actual readings. After one or two cycles, the health report normalises.

Laptop shuts down at 20–30% charge shown on Aspire 7520

This symptom usually means the fuel gauge IC hasn't calibrated against the new cell yet — its charge map still reflects the old, degraded cell's voltage curve. Under full CPU and display load, actual cell voltage drops faster than the gauge predicts, and the EC triggers a hard shutdown before the displayed percentage reaches zero. It's not a cell fault. Run two full discharge-to-hibernate and full-charge cycles without interruption. After that, the fuel gauge IC recalibrates its curve and the shutdown point drops back to the correct low-voltage cutoff near 10–11V pack voltage.

Compatible Models

Aspire 7520 Aspire 6920-6621 Aspire 5920G-302G25Hi Aspire 8920G-934G50Bn Aspire 5920-3A2G16Mi Aspire 6920G-934G32Bn Aspire 5920G-302G25Mn Aspire 7720Z-1A2G16Mi Aspire 5920G-102G16 Aspire 7720G-702G50Hn Aspire 5920G-602G20HN Aspire 7720G-3A2G32Mi Aspire 5920G-302G25 Aspire 7520G-502G32Mi Aspire 5920G Aspire 7720-3A2G12Mi Aspire 6920G-832G25Bn Aspire 5520G-402G25Mi Aspire 7720G-302G25Mi Aspire 6920-6731 Aspire 5520 Aspire 8920-6671 Aspire 7520-5115 Aspire 6920-6422 Aspire 6920G-6A4G25Mn Aspire 6920 Aspire 5920G-302G25Hn Aspire 8920G-834G32Bn Aspire 5920-1A2G16Mi Aspire 6920G-834G32Bn Aspire 5920G-3A2G25Mn Aspire 7720Z Aspire 5920G-602G16Mn Aspire 7720G Aspire 5920G-602G25Mn Aspire 7720G-1A2G16Mi Aspire 5920-6582 Aspire 7720G-603G50Hn Aspire 8920G-932G32Bn Aspire 5920 Aspire 7720G-302G32Hi Aspire 5520-6A2G12Mi Aspire 7720G-1A2G24Mi Aspire 6920-6610 Aspire 7520-6A1G08Mi Aspire 8920-6048 Aspire 7520-5823 Aspire 6920-6864 Aspire 5920-302G16MN Aspire 8920G-934G64Bn Aspire 5920-302G12Mi Aspire 8920G-6A4G32Bn Aspire 5920G-302G16MN Aspire 6920G-814G32Bn Aspire 5920G-302G20H Aspire 7720ZG-3A1G16Mi Aspire 5920G-702G25Hn Aspire 7720G-602G50Mn Aspire 5920G-302G20N Aspire 7520G-502G25Mi Aspire 5920-6661 Aspire 7720G-5A2G16Mi Aspire 8920G Aspire 5520-5A2G16 Aspire 7720G-302G25Mn Aspire 8920-6030 Aspire 5520G Aspire 7720-1A2G16Mi Aspire 6920-6428 Aspire 7520-5618 Aspire 8920 Aspire 5920G-302G16N Aspire 6920G Aspire 7520G Aspire 7720 Aspire 8920Gm Aspire AS5720-4230 Aspire AS5720-4516 Aspire AS5720-4662 Aspire AS5720-4984 Aspire AS5920-6329 Aspire AS5920-6444 Aspire AS6920-6422 Aspire AS6920-6508 Aspire AS6920-6886 Aspire AS6920-6973 Aspire AS7520-5823 Aspire AS7520-5907 Aspire AS7720-6135 Aspire AS5520-5908 Aspire 5310 Aspire 5220G Aspire 5310G Aspire 5315 Aspire 5315G Aspire 5710 Aspire 5710G Aspire 5720 Aspire 5720G Aspire 5720Z Aspire 5720ZG Aspire 5910 Aspire 5910G Aspire 7320 Aspire 7320G Aspire 7520Z Aspire 7520ZG Aspire 7720ZG Aspire 8930G

Replaces Part Numbers

AS07B32 AS07B72 AS07B42 1010872903 AS07B52 BT.00804.024 BT.00807.014 LC.BTP00.007 AS07B31 AS07B41 AS07B51 AS07B71 AS07BX1 AS07BX2 LC.BTP00.008 3UR18650Y-2-CPL-ICL50 934T2180F BT.00603.033 BT.00604.018 BT.00605.015 BT.00607.010 BT.00803.024 BT.00804.020 BT.00805.011 BTP-AS5520G ICK70 ICL50 ICW50 ICY70 JDW50 MS2221 ZD1

Technical Specifications

Voltage14.8V
Amp Hours4400mAh
Capacity4400mAh
Rate65.12Wh
Net Weight402.5g /14.20 oz
Gross Weight552.5g /19.49 oz
Approximate Weight552.5g /19.49 oz
Dimension 205.08 x 70.20 x 20.08mm

Product Highlights

  • Brand: Acer
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The Aspire 7520 BIOS still shows the old battery's serial number and Wh rating after I swapped the cell — is the new battery actually being read?

The BIOS pulls Wh and identification data from EEPROM registers that update only after a full learn cycle, not at first boot. The new cell is powering the system correctly even when the old figures still display. Run the laptop down to hibernate cutoff on battery, then charge uninterrupted to 100%. After that cycle completes, the EC rewrites those registers and the correct cell data appears in BIOS.

Charge stopped at 80% and won't go higher — the Aspire 7520 just sits there plugged in without climbing to 100%.

Some Acer BIOS versions ship with a charge-limit setting enabled that caps charge at 80% to reduce cell stress during long plugged-in use. This is firmware behaviour, not a fault with the replacement cell. Go into BIOS setup (F2 at POST), look under the Main or Power tab for a "Battery Health Mode" or charge threshold option, and disable it. After saving and rebooting, the cell will charge to 100%.

Windows is showing the new battery's capacity as significantly lower than 65Wh in the power report — the numbers look wrong even after a full charge.

Windows calculates reported capacity from the fuel gauge IC's charge map, which is still calibrated to the old degraded cell on first install. The IC hasn't yet measured a full charge-discharge sweep against the new cell's actual chemistry. Run two complete discharge-to-hibernate and full-charge cycles. After the second cycle, run `powercfg /batteryreport` in an elevated command prompt — the reported design capacity and full charge capacity figures will reflect the actual 65.12Wh rating of the new cell.

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