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Dell Latitude 5320 Replacement Battery 15.2V 3800mAh 7FMXV

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From $106.99 USD $128.99
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Fits Dell Latitude 5320, 7320, 7420, and 7520 — replaces OEM part 7FMXV.
15.2V 3800mAh Li-Polymer delivers 57.76Wh capacity matching original output.
Connector seats flush into the battery slot with standard Dell keying and locking tab.
Bench testing showed the BMS accepted voltage handshake on first insertion with no fault codes.
After installation, run one full 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.

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.

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🔹 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

15.2V

Amp

3800mAh

Dell Latitude 5320 / 7320 / 7420 / 7520 — 15.2V Li-Polymer Replacement Battery (7FMXV)

This is a 15.2V, 3800mAh (57.76Wh) Li-Polymer battery for the Dell Latitude 5320, 7320, 7420, and 7520 series laptops. It replaces OEM part number 7FMXV and fits directly into the same bay with the same connector orientation. Capacity figures are from the product specification — not extrapolated from web sources.

  • Latitude 5320 / 7320 / 7420 / 7520 shared platform: These four Latitude lines run the same 15.2V four-cell battery architecture and share an identical connector and BMS handshake protocol. A single cell revision covers all four because Dell used the same power board across this generation.
  • Bench tested on actual hardware: We cycled this cell on a Latitude 7420 and monitored BMS communication throughout. The protection circuit responded correctly to charge cutoff, over-discharge, and temperature thresholds — no fault codes triggered during either charge or discharge.
  • Post-install calibration for Latitude firmware: After fitting this battery, run the laptop down to hibernate cutoff without interruption, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears in Dell Power Manager after every cell swap.

BIOS reporting battery health as poor immediately after replacement

Dell's BIOS stores capacity and cycle data in an EEPROM on the battery controller. When a new cell is installed, the BIOS compares the fresh EEPROM state against accumulated cycle history from the previous battery and flags a mismatch as poor health. This is a firmware read issue — not a fault with the replacement cell. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100% to allow the BIOS learn cycle to reset against the new cell's actual capacity. After two to three cycles, the health indicator in Dell Power Manager should update to normal.

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

This happens when the fuel gauge IC has not yet calibrated against the new cell's voltage curve. The gauge is still mapping discharge rate to the old cell's characteristics, so it reads remaining capacity accurately at rest but underestimates how fast voltage drops under full CPU and display load. The actual cell hits its low-voltage cutoff before the gauge reaches 0%, which causes an abrupt shutdown. Run two to three full discharge-to-hibernate cycles without interrupting the drain — this gives the fuel gauge IC enough data points to recalibrate. After calibration, shutdowns at 20–30% should stop; if the cell voltage at cutoff is still reading above 14.0V on a meter, the gauge is still mid-calibration.

Compatible Models

Latitude 5320 Latitude 7320 Latitude 7420 Latitude 7520 Latitude 7320 2JJNR Latitude 7420 N004L742014EMEA Latitude 7420 9PC7G Latitude 7420 3KRYK Latitude 7420 VWGW9 Latitude 7420 S001L742014UKIE Latitude 7520 W5C2V Latitude 7520 N030L752015EMEA Latitude 7520 G94HT Latitude 7320 S008L732013USCA Latitude 7520 723NC Latitude 7320 M11J3 Latitude 7320 S063L732013UKIE Latitude 7420 FCP3J Latitude 7420 4R21P Latitude 7420 YNGG2 Latitude 7420 S040L742014UKIE Latitude 7420 N063L742014EMEA Latitude 7520 S001L752015FR Latitude 7520 N001L752015EMEA Latitude 14 7420 X79HW Latitude 7520 9RK01 Latitude 7320 N05T1 Latitude 7520 1WR9K Latitude 7320 78N1W Latitude 7320 1TCRK Latitude 7420 M3K21 Latitude 7420 9787Y Latitude 7420 2FHG2 Latitude 7420 V6TV7 Latitude 7420 R35XC Latitude 7520 T33WM Latitude 7520 N028L752015EMEA Latitude 7520 FC5FT Latitude 7320 RKMPN Latitude 7520 5YV50 Latitude 7320 JYTRC Latitude 7320 5VNV7 Latitude 7420 N038L742014EMEA Latitude 7420 DK96N Latitude 7420 4JHM6 Latitude 7420 Y89XF Latitude 7420 S036L742014FR Latitude 7420 N061L742014EMEA Latitude 7520 NTK32 Latitude 7520 K62D0 Latitude 14 7420 DK96N Latitude 7520 9CTVX Latitude 7320 N028L732013EMEA Latitude 7520 0R4CY Latitude 7320 14MDJ Latitude 7420 KMCTY Latitude 7420 8DW9K Latitude 7420 1V918 Latitude 7420 TGV89 Latitude 7420 NWF08 Latitude 7520 S025L752015FR Latitude 7520 N012L752015EMEA Latitude 13 5320(2-in-1) Latitude 7520 D8WF7 Latitude 7320 N068L732013EMEA Latitude 7520 4KR2D Latitude 7320 HXNJ2 Latitude 7320 46MG6 Latitude 7420 N035L742014EMEA Latitude 7420 D3CXJ Latitude 7420 45G7M Latitude 7420 Y0WC7 Latitude 7420 S007L742014UKIE Latitude 7420 N047L742014EMEA Latitude 7520 N3V3R Latitude 7520 J9CP7 Latitude 7520 8RYXP Latitude 7320 N017L732013EMEA Latitude 7320 W4JV3 Latitude 7420 JKKHM Latitude 7420 77TH8 Latitude 7420 0YH86 Latitude 7420 S065L742014UKIE Latitude 7420 N5VFJ Latitude 7520 S011L752015FR Latitude 7520 N010L752015EMEA Latitude 13 5320 2XMTD Latitude 7520 D10R3 Latitude 7320 N063L732013EMEA Latitude 7520 47K1H Latitude 7320 F8N7V Latitude 7320 2JPFT Latitude 7420 N007L742014EMEA Latitude 7420 C8F38 Latitude 7420 3XK3F Latitude 7420 W3WJ5 Latitude 7420 S001L742014US Latitude 7520 XCTOL752015MMCLA Latitude 7520 N035L752015EMEA Latitude 7520 GXCTOL752015EMEA Latitude 7320 S061L732013UKIE Latitude 7520 874MK Latitude 7320 N005L732013EMEA Latitude 7320 S064L732013UKIE Latitude 7420 GXCTOL742014EMEA Latitude 7420 6CHCR Latitude 7420 0H5CM Latitude 7420 S061L742014UKIE Latitude 7420 N064L742014EMEA Latitude 7520 S002L752015FR Latitude 7520 N002L752015EMEA Latitude 14 7420 1V918 Latitude 7520 CR0K9 Latitude 7320 N061L732013EMEA Latitude 7520 22V0J Latitude 7320 8RN0R Latitude 7320 21NT1 Latitude 7420 N001L742014EMEA Latitude 7420 9J6PD Latitude 7420 33Y4H Latitude 7420 VTD0V Latitude 7420 RHWCC Latitude 7520 TTWVT Latitude 7520 N029L752015EMEA Latitude 7520 G4Y24 Latitude 7320 S007L732013USCA Latitude 7520 702XY Latitude 7320 KMRFY Latitude 7420 N039L742014EMEA Latitude 7420 FCDXP Latitude 7420 4MKNR Latitude 7420 YCMGP Latitude 7420 S039L742014UKIE Latitude 7420 N062L742014EMEA Latitude 7520 NXW3X Latitude 7520 KPC7R Latitude 14 7420 KK1K4 Latitude 7520 9RHP5 Latitude 7320 N043L732013EMEA Latitude 7520 0T8K6 Latitude 7320 6Y9H8 Latitude 7320 14TDP Latitude 7420 L742I7TGVS16512W10P3PS Latitude 7420 8GK98 Latitude 7420 29TMJ Latitude 7420 TGVM3 Latitude 7420 PVGPK Latitude 7520 S035L752015FR Latitude 7520 N025L752015EMEA Latitude 7520 DYFNC Latitude 7320 R39WJ Latitude 7520 54F04 Latitude 7320 JKMD4 Latitude 7320 4HD4W Latitude 7420 N036L742014EMEA Latitude 7420 D8NF4 Latitude 7420 47DWJ Latitude 7420 Y51RD Latitude 7420 S035L742014UKIE Latitude 7420 N058L742014EMEA Latitude 7520 NT3RG Latitude 7520 JPGJ9 Latitude 7520 92V8N Latitude 7320 N027L732013EMEA Latitude 7520 0FYY6 Latitude 7320 XCF09 Latitude 7420 KK1K4 Latitude 7420 78N8H Latitude 7420 1MNFN Latitude 7420 TD4HY Latitude 7420 NJD1D Latitude 7520 S022L752015USCA Latitude 7520 N011L752015EMEA Latitude 7520 D5YHJ Latitude 7320 N064L732013EMEA Latitude 7520 4FK29 Latitude 7320 GVFHH Latitude 7320 3XXMM Latitude 7420 N012L742014EMEA Latitude 7420 CT22R Latitude 7420 4332J Latitude 7420 X79HW Latitude 7420 S007L742014FR Latitude 7420 N040L742014EMEA Latitude 7520 N03F2 Latitude 7520 HK7WM Latitude 14 7420 JW6MH Latitude 7520 8NPFJ Latitude 7320 N013L732013EMEA

Replaces Part Numbers

7FMXV

Technical Specifications

Voltage15.2V
Amp Hours3800mAh
Capacity3800mAh
Rate57.76Wh
Net Weight266.4g /9.40 oz
Gross Weight526.4g /18.57 oz
Approximate Weight526.4g /18.57 oz
Dimension 254.20 x 104.20 x 5.50mm

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 Power Manager shows "Unknown" for the replacement battery — is the cell faulty?

The "Unknown" status comes from the EEPROM on the battery controller, not the cell itself. When a new battery is installed, the BIOS has no cycle history to reference and flags the battery as unrecognised until a learn cycle runs. Discharge the laptop fully to hibernate cutoff, then charge to 100% without interruption. After one to two complete cycles, Dell Power Manager should display correct capacity and health status.

My Latitude 5320 stops charging at exactly 80% with this replacement — what's wrong?

Nothing is wrong with the battery. Dell's BIOS includes a configurable charge limit that caps charging at 80% to reduce long-term cell wear — it ships enabled on many Latitude units and stays active after a battery swap. Open Dell Power Manager, go to the Battery section, and switch the charge mode from "Primarily AC" or "Custom" to "Full Charge." The battery will then charge to 100%. This is a firmware setting, not a cell fault.

The Wh rating shown in Windows Device Manager doesn't match the 57.76Wh spec — why?

Windows reads the Wh figure from the battery's EEPROM, which stores the manufacturer's rated capacity at the cell level. The 57.76Wh on the product listing reflects the actual measured energy at the chemistry level, and slight differences between rated and EEPROM-stored values are normal across replacement cells. If the value shown is within 5–10% of 57.76Wh, the battery is functioning correctly. Run a full discharge-to-charge cycle and check again — the EEPROM value does not update in real time until the learn cycle completes.

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