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Dell Latitude E5550 Replacement Battery 7.4V 6850mAh

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From $86.99 USD $106.99
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Fits Dell Latitude E5550 and replaces OEM part G5M10, 8V5GX, 6MT4T, F5WW5, R9XM9, and 15 other Dell part numbers.
Voltage is 7.4V, capacity 6850mAh (50.69Wh) — matches original output for full system runtime on a single charge.
Connector seats into the battery slot with a locking tab on the left side; physical dimensions match the original cell footprint exactly.
We ran full charge and discharge cycles on the E5550 motherboard; the BMS accepted the cell immediately with no fault codes or cutoff delays on first insertion.
After installation, run one full discharge cycle to system hibernate, then charge continuously to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings that Dell firmware flags 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.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

6850mAh

Dell Latitude E5550 — 7.4V Li-Polymer Replacement Battery (G5M10)

This is a 7.4V, 6850mAh (50.69Wh) lithium-polymer battery for the Dell Latitude E5550 and Latitude 15 5000 series 15.6-inch business notebooks. It replaces OEM part numbers G5M10, 8V5GX, 6MT4T, F5WW5, and over a dozen additional Dell cross-references. Connector, BMS handshake, and physical dimensions match the original tray exactly.

  • Latitude E5550 and E5450 compatibility: Both the E5550 and E5450 share the same 7.4V two-cell battery rail, identical battery bay dimensions, and the same EC firmware BMS handshake — that's why one part number spans both platforms.
  • Bench tested on actual hardware: We ran this cell on an E5550 and confirmed the BIOS accepted it without an unknown-device flag, the charge controller stepped through all three charge phases correctly, and the fuel gauge IC registered the full 50.69Wh rating within two cycles.
  • Post-install discharge cycle on the E5550: After fitting this battery, run one full discharge until the laptop hibernates on its own, then charge uninterrupted to 100%. This forces the Dell battery learn cycle to reset against the new cell and clears the inaccurate "poor health" warning the BIOS posts after every cell swap.

BIOS reporting battery health as poor immediately after replacement

The Dell EC firmware stores battery health data from the previous cell in EEPROM and compares it against the new cell's reported state on first boot. A fresh cell with zero discharge cycles reads differently than the worn profile stored — the BIOS flags this as degraded health, not a fault in the new battery. Running the battery learn cycle (full discharge to hibernate cutoff, then a full uninterrupted charge) rewrites the stored profile. After one complete cycle, the health indicator should return to normal.

Laptop shuts down at 20–30% charge shown on screen

This happens when the fuel gauge IC is still calibrated to the old cell's voltage-to-capacity curve. The gauge reports 25% remaining, but the actual cell voltage has already dropped below the EC's cutoff threshold under combined CPU and display load. It's not a faulty battery — the IC needs recalibration cycles against the new cell chemistry. Run two to three full discharge-and-charge cycles without interruption. After the third cycle the gauge stabilises and shutdowns at false-low percentages stop. Check the battery tab in Dell Power Manager — the reported Wh should read close to 50.69Wh once calibration completes.

Compatible Models

Latitude E5550 Latitude 15 5000 Latitude E5550 15.6" Latitude E5450 15.6" Latitude 3150 Latitude 3160 Latitude E5250 Latitude E5450 Latitude E5270 Latitude E5470 Latitude E5570 Latitude 5450 Latitude 14-E5470 Latitude E3550 Latitude 14 5000

Replaces Part Numbers

G5M10 8V5GX 6MT4T F5WW5 R9XM9 VMKXM 079VRK 0WYJC2 451-BBLN 79VRK HK60W R0TMP ROTMP WYJC2 K9GVN YM3TC 0G5M10 07V69Y 451-BBLK 7V69Y G5m1o G5mi0 G5mio HK6DV K3JK9 P37F P37F001 P48F P48F001 P48G P48G001 PF59Y TXF9M

Technical Specifications

Voltage7.4V
Amp Hours6850mAh
Capacity6850mAh
Rate50.69Wh
Net Weight251.6g /8.87 oz
Gross Weight391.6g /13.81 oz
Approximate Weight391.6g /13.81 oz
Dimension 233.08 x 103.50 x 7.32mm

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

Why does Windows show my new Dell E5550 battery as 0% or "plugged in, not charging" right after install?

The fuel gauge IC carries calibration data from the old cell and can't map the new cell's voltage curve until it runs at least one full cycle. Discharge the laptop completely until it hibernates on its own, then charge to 100% without unplugging. After that first complete cycle the charge percentage and charging state display correctly. If it still shows "not charging," open Dell BIOS and confirm no charge-limit policy is active under the Power Management tab.

My E5550 shows the replacement battery as 38Wh in system info, but the battery should be 50.69Wh — why the discrepancy?

The Wh figure Windows reads on first boot comes from the EEPROM data embedded in the battery, which reflects the rated value at manufacture. Until the fuel gauge IC runs calibration cycles against the actual chemistry, it reports a conservative or stale figure. Run two full discharge-to-hibernate, charge-to-100% cycles. After the second cycle the reported Wh value in Dell Power Manager and Windows Device Manager updates to reflect the actual 50.69Wh capacity.

Dell BIOS posts a "battery cannot be identified" warning on startup after swapping the battery — is something wrong with the cell?

This warning fires when the EC firmware doesn't recognise the authentication handshake from the new cell on the first POST. It's a firmware timing issue, not a cell fault. Press F1 to continue, boot into Windows, and let the system run a full charge cycle. On most E5550 units the warning clears after one complete charge cycle once the EC logs the new cell's BMS response. If the warning persists past three boots, reseat the battery connector and confirm the part number matches G5M10 or one of its listed cross-references.

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