eMachines D525 Replacement Battery 11.1V 4400mAh AS07A32
This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.
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eMachines D525 Replacement Battery 11.1V 4400mAh AS07A32 - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
⚠️ 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.
eMachines D525 Replacement Battery 11.1V 4400mAh AS07A32 - is backordered and will ship as soon as it is back in stock.
Voltage
11.1V
Amp
4400mAh
eMachines D525 / D725 — 11.1V Li-ion Replacement Battery (AS07A32)
This 11.1V 4400mAh Li-ion battery replaces the original cell in the eMachines D525 and D725 notebooks. It slots directly into either model and restores portable operation when the factory battery no longer holds voltage. Rated at 48.84Wh, it matches the original power spec for both machines.
- D525 and D725 platform fit: Both models share the same battery bay dimensions, connector pinout, and BMS handshake protocol — that's why a single cell covers the full pair. The same OEM part numbers, including AS07A51, AS07A72, and BT.00607.012, were issued across this chassis generation.
- Bench tested on actual hardware: We ran the cell through charge and discharge cycles on the D525 platform. The BMS negotiated correctly, the fuel gauge IC registered the new cell, and charge terminated cleanly at full voltage without false cutoff events.
- Post-install calibration cycle: After fitting this battery, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health or low-capacity warning that appears after any cell swap on this platform.
BIOS reporting poor battery health immediately after swap on the D525
The D525 BIOS reads health data stored in the old cell's EEPROM before it has any reference data for the new one. It flags poor health because it's comparing the new cell against charge history it doesn't have yet. This isn't a fault with the replacement cell — it's a learn cycle gap. Run two full discharge-to-hibernate and uninterrupted-charge cycles and the BIOS will update its health record against actual cell performance.
Laptop shuts down at 20–30% charge shown on the gauge
This happens when the fuel gauge IC hasn't calibrated against the new cell's actual voltage curve yet. The gauge still references the old cell's degraded profile, so it misreads remaining capacity and the system shuts down before the battery is truly empty. Under full CPU and display load, voltage sag accelerates this mismatch. A full discharge to hibernate cutoff followed by a clean charge to 100% gives the fuel gauge IC the data it needs to track the new cell accurately — target at least 12.0V open-circuit before the first hibernate cutoff.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: eMachines
- 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 eMachines D525 shows the battery as "unknown" or 0% right after I installed the new cell — is it dead?
The EEPROM on the new cell has no charge history yet, so the BIOS flags it as unknown until it completes a learn cycle. Run the laptop down to hibernate on battery power, then charge uninterrupted to 100% without pulling the plug. Do this twice and the BIOS will register the cell correctly. After the second cycle, the 0% or unknown status clears on its own.
System info shows the wrong Wh rating for this battery — it's reporting a different number than 48.84Wh.
The Wh figure shown in Windows or in BIOS comes from data written into the cell's EEPROM at the factory, which sometimes reflects a rated chemistry value rather than the measured capacity of that specific cell. The actual energy the cell delivers is 48.84Wh — the displayed number is a firmware label, not a live measurement. Run a full discharge and charge cycle and check again; some firmware implementations update the displayed value after a calibration pass. If it persists, the discrepancy is cosmetic and does not affect how the battery performs.
The D525 charge stops between 79% and 82% and never reaches 100% — is the battery faulty?
A hard stop at 80% is almost always a BIOS-controlled charge limit, not a cell fault. Acer and eMachines BIOS versions on this chassis include a charge threshold setting — check the BIOS power management screen for a "Battery Charge Threshold" or similar option and set it to 100%. If no such setting appears, a BIOS update may have introduced the limit; flashing to the latest BIOS version for the D525 and then running a full calibration cycle resolves it in most cases.
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