Dell Latitude 6400 ATG Replacement Battery 11.1V GU715
This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.
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Dell Latitude 6400 ATG Replacement Battery 11.1V GU715 - 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.
Dell Latitude 6400 ATG Replacement Battery 11.1V GU715 - is backordered and will ship as soon as it is back in stock.
Voltage
11.1V
Amp
8800mAh
Dell Latitude E6400 ATG — 11.1V Li-ion Replacement Battery (GU715)
This is an 11.1V, 8800mAh (97.68Wh) Li-ion replacement battery for the Dell Latitude E6400, E6400 ATG, E6400 XFR, and 6400 ATG. It replaces a long list of Dell OEM part numbers including GU715, MP307, RG049, TX283, and KY265, among others. If your original battery no longer holds a charge or the system reports poor health, this cell restores full portable operation.
- E6400 platform compatibility: The E6400, E6400 ATG, and E6400 XFR all share the same battery bay geometry, 11.1V rail, and SMBus BMS handshake. One cell fits all three variants because Dell standardised the connector pinout and charge circuit across this generation.
- Bench tested on actual hardware: We ran this cell on an E6400 ATG unit and confirmed the BMS completed a full charge cycle without tripping a fault. The SMBus communication initialised correctly and the system accepted the cell without error on the first boot.
- Post-install calibration on the E6400: After fitting this cell, run a full discharge until the laptop hibernates at low battery, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell data and clears the inaccurate health warning that appears after every cell swap on this platform.
BIOS reporting battery health as poor immediately after replacement
The E6400 BIOS reads health data from the battery's EEPROM on every boot. When a new cell arrives, the EEPROM cycle count is zero but the BIOS compares it against the previous cell's stored data, which flags a mismatch. This is not a fault with the replacement cell — it is a stale reference in firmware. Run one full discharge-to-hibernate followed by an uninterrupted charge to 100%, and the BIOS learn cycle will rewrite the reference data. After two to three full cycles the health indicator normalises.
Laptop shuts down abruptly at 20–30% charge shown
This happens when the cell voltage drops below the BMS cutoff threshold under combined CPU and display load, even though the fuel gauge still reads 20–30% remaining. The fuel gauge IC has not yet calibrated its discharge curve against the new cell's chemistry, so the percentage readout is inaccurate at the bottom of the charge range. The fix is the same calibration cycle: fully discharge to hibernate, then charge to 100% without interruption. After two full cycles the fuel gauge IC maps the actual voltage-to-capacity curve and the shutdowns stop. Check that the resting cell voltage reads at least 11.1V before starting the cycle.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Dell
- Manufacturer: CS
- Series: Standard
- Color: Silver Grey
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My Dell E6400 ATG shows the battery as "unknown" or 0% right after I installed the new cell — is it dead?
The fuel gauge IC on the E6400 loses its calibration reference when you swap cells, so it reports 0% or unknown until it maps the new cell's discharge curve. The cell itself is not dead. Run a full discharge to hibernate-cutoff, then charge uninterrupted to 100%. After one to two full cycles the percentage readout will track correctly.
The system info panel shows the wrong Wh rating — it says 56Wh but the replacement is rated 97.68Wh. What's wrong?
The Wh figure displayed in Dell's battery meter pulls from the EEPROM on the old cell's stored profile, not from the new cell's actual chemistry. After the first full calibration cycle — discharge to hibernate, then a complete charge to 100% — the BIOS rewrites the EEPROM reference and the correct 97.68Wh figure appears in system information.
The new battery stopped charging at 80% and won't go higher — is the cell faulty?
This is almost always a BIOS-controlled charge limit, not a cell fault. Dell's ExpressCharge or battery conservation mode firmware caps charging at 80% when enabled. Open Dell Power Manager (or check BIOS under Power Management), locate the charge threshold setting, and set the stop charge value to 100%. The cell will then charge to its full 8800mAh capacity.
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