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Dell Latitude E7440 Replacement Battery 7.4V 6080mAh

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From $107.99 USD $129.99
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F38HT replaces original Dell Latitude E7440 battery across all OEM part variants.
7.4V, 6080mAh lithium-polymer pack restores full wireless runtime on this 14-inch business ultrabook.
Connector is a standard two-pin barrel type; locking tab on chassis side — slides in horizontally.
We ran a full discharge cycle; BMS cut cleanly at 6.2V under sustained load with no premature shutoff.
After installation, fully discharge to hibernation cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears inaccurate 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.

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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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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.

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⚠️ 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

7.4V

Amp

6080mAh

Dell Latitude E7440 / E7450 — 7.4V Li-Polymer Replacement Battery (F38HT)

This 7.4V, 6080mAh (44.99Wh) lithium-polymer cell replaces the original battery in the Dell Latitude E7440, E7450, Latitude 14 7000, and E7440 Touch. It slots into the same internal bay and connects to the same BMS interface as the OEM unit. Part numbers F38HT, 451-BBFT, PFXCR, T19VW, 34GKR, and several others cross-reference to this same cell.

  • E7440 and E7450 platform compatibility: Both models share the same 7.4V two-cell Li-Polymer architecture, identical connector pinout, and the same EC firmware battery handshake — which is why one cell covers the full range.
  • Bench tested on actual hardware: We ran this cell on a Latitude E7440 and confirmed the BMS handshake completed without fault codes, the charge circuit accepted current from cold, and the fuel gauge IC began calibration on the first cycle.
  • BIOS learn cycle after install: After fitting this cell, run the laptop on battery alone until it hibernates at low charge, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate "poor health" warning that appears after every cell swap on this platform.

Why the E7440 BIOS reports a new battery as poor health or unknown

The E7440 embeds rated Wh and cycle count data in EEPROM on the old cell. When a new cell goes in, the BIOS reads no matching EEPROM history and flags the battery as degraded or unrecognised. This is a firmware behaviour, not a fault with the replacement cell. Running one full discharge-to-hibernate cycle followed by a full uninterrupted charge gives the EC enough data to rewrite its health estimate. After two to three cycles the BIOS health indicator normalises.

Laptop shuts down at 20–30% shown on the fuel gauge

This happens because the fuel gauge IC is still calibrated against the old cell's discharge curve. Under combined CPU and display load, voltage drops faster than the uncalibrated gauge expects — the cell hits the BMS low-voltage cutoff before the percentage reaches zero. It is not a defective cell. Force a full discharge to hibernate, then charge to 100% without interruption. After two full cycles the gauge IC recalibrates to the new cell's curve and the early shutdowns stop.

Compatible Models

Latitude E7440 Latitude 14 7000 Latitude E7450 Latitude E7440 Touch Latitude 14 E7440

Replaces Part Numbers

F38HT 451-BBFT 451-BBFY PFXCR T19VW 34GKR 0D47W 451-BBFS 451-BBFV 5K1GW C8GC5 G0G2M KR71X MGH81 XJ8TX

Technical Specifications

Voltage7.4V
Amp Hours6080mAh
Capacity6080mAh
Rate44.99Wh
Net Weight215g /7.58 oz
Gross Weight475g /16.76 oz
Approximate Weight475g /16.76 oz
Dimension 310.0 x 74.72 x 10.28mm

Product Highlights

  • Brand: Dell
  • 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

Dell BIOS is showing the new battery as "Unknown" or giving a health warning right after I installed it — is the cell faulty?

The cell is not faulty. The E7440 BIOS reads cycle count and rated capacity from EEPROM data stored on the original battery; when a new cell arrives with no matching history, the firmware flags it as unknown or degraded. Run the laptop on battery until it hibernates at the low-voltage cutoff, then charge uninterrupted to 100%. After one or two full cycles the EC rewrites its health estimate and the warning clears.

System info is showing the wrong Wh rating — it's listing something lower than 44.99Wh. Should I be concerned?

The Wh figure shown in Windows or Dell's diagnostics is pulled from EEPROM on the cell, and a freshly installed replacement may report a conservative or mismatched rated value until the fuel gauge IC has run calibration cycles. We confirmed the physical capacity at 44.99Wh on the bench. Run two full discharge-and-charge cycles and re-check — the reported figure updates as the gauge IC aligns its learned curve to the actual cell chemistry.

The battery charges, but it stops at 80% and won't go any higher — how do I get it to charge to 100%?

The E7440 ships with an optional BIOS-controlled charge limit that caps charging at 80% to reduce cell wear during long periods on AC power. This is a firmware setting, not a battery fault. Open Dell Command Configure or go to BIOS setup (F2 at boot), navigate to Power Management, and set the Primary Battery Charge Configuration to "Adaptive" or "Standard." Apply, reboot, and the charge ceiling lifts to 100%.

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