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Dell Latitude 12 7000 Replacement Battery 11.4V 451-BBZL

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From $69.99 USD $86.99
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Fits Dell Latitude 12 7000, 7280, 7480 series laptops; replaces OEM part 451-BBZL and equivalent cross-reference numbers.
11.4V, 3650mAh lithium-ion cell restores full charge capacity to aging or failed original battery packs.
Connector seats into the Dell battery slot with single locking tab; no adapter needed for direct fit.
Bench testing showed clean BMS handshake on first insertion; fuel gauge IC calibrated across three charge cycles.
After installation, discharge fully to hibernation cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears false health warnings that appear post-swap.
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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.

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.

Voltage

11.4V

Amp

3650mAh

Dell Latitude 12 7000 Series — 11.4V Li-ion Replacement Battery (451-BBZL)

This 11.4V, 3650mAh (41.61Wh) Li-ion battery replaces the original cell in the Dell Latitude 12 7000, 7280, and 7480 series ultraportable business notebooks. It matches the OEM voltage rail and connector pinout required by the Dell EC firmware. Cross-reference part numbers include DJ1J0, PGFX4, ONFOH, and 9W9MX among others.

  • Latitude 7000/7280/7480 platform fit: These three models share the same battery bay dimensions (200.35 × 103.30 × 5.46mm), 11.4V three-cell architecture, and SMBus BMS handshake protocol. One cell covers all of them.
  • Bench tested on actual hardware: We cycled this cell on a Latitude 7480 and confirmed the BMS completed a full handshake with no unknown device flag. Charge acceptance held steady across three consecutive cycles without the EC throttling current.
  • Post-install calibration on Dell EC firmware: After fitting this cell, run one full discharge to hibernate-cutoff then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.

BIOS reporting battery health as poor after replacement

Dell's EC reads health data from the battery's EEPROM, which stores cycle count and rated capacity from the original cell. A new cell arrives with a fresh EEPROM profile that the BIOS hasn't yet validated against actual charge cycles. Until the learn cycle runs, the firmware compares incoming data against the old cell's history and flags a mismatch as poor health. Run one full discharge-to-hibernate then a full uninterrupted charge — the EC recalibrates and the warning clears.

Laptop shutting down at 20–30% shown after battery swap

This is a voltage-cliff failure, not a capacity problem. Under combined CPU and display load, the cell voltage drops faster than the fuel gauge IC can track, hitting the EC's low-voltage cutoff while the OS still shows 20–30% remaining. The fuel gauge IC needs two or three full calibration cycles against the new cell before its state-of-charge model is accurate. Discharge fully to hibernate-cutoff, charge to 100%, and repeat twice — the reported cutoff point should stabilise above 5%.

Compatible Models

Latitude 12 7000 Latitude 12 7280 Latitude 12 7480 Latitude 7480 (6GLXLH2) Latitude 12 (7280-K8X0T) Latitude 12 (7280-KHY0C) Latitude 7490 451-BBZL Latitude 7480 Latitude 12 700 Latitude 12(7280-KHY0C) Latitude 13 7390-6Y9TV N015L7280-D1616CN Latitude 7290-194XR Latitude 13 7390-G2MJM N009L7280-D1526CN Latitude 13 7390-P41XT Latitude 13 7390-1VDD0 N022L7280-D1706CN Latitude 13 7390-RWVXC Latitude 13 7390-6008 N013L7280-D1606CN Latitude 7290-8M9F9 Latitude 13 7390-XPWYP Latitude 13 7390-8G9VH N001L7280-D2506CN Latitude 7290-4R27G Latitude 13 7390-N61HP Latitude 13 7390-1TJ4H N001L7280-D1306CN Latitude 13 7390-P8Y6Y Latitude 13 7390-30HX1 N018L7280-D1626CN Latitude 7290-DWTKV Latitude 13 7390-TC3D8 Latitude 12(7280-K8X0T) Latitude E5310 Latitude 5300 2-IN-1 Latitude E7300 Latitude 5310 Latitude E5300 Latitude 5310 2-in-1 Latitude E7400 Inspiron 7300 2-IN-1 Latitude 5300 Latitude E7380 LATITUDE 7400 Latitude E7480 Latitude 13 7390 Latitude 7290 Latitude E7280 Latitude 7300 Latitude 7380 Latitude 7280 Latitude 7390

Replaces Part Numbers

451-BBZL DJ1J0 PGFX4 ONFOH 00G74G 02PFPW 03KF82 08JYHH 0G74G 0NF0H 0PGFX4 2PFPW 3KF82 8JYHH 9W9MX C27RW DJ1JO P100G001 P28S P28S001 P28S002 P73G P73G001 P73G002 P96G002 P96G003 P97G002

Technical Specifications

Voltage11.4V
Amp Hours3650mAh
Capacity3650mAh
Rate41.61Wh
Net Weight179.5g /6.33 oz
Gross Weight319.5g /11.27 oz
Approximate Weight319.5g /11.27 oz
Dimension 200.35 x 103.30 x 5.46mm

Product Highlights

  • Brand: Dell
  • 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

Dell BIOS says the battery health is "poor" straight out of the box — is the cell faulty?

No. The BIOS is reading EEPROM data that doesn't yet match what the new cell's firmware reports, so it flags a mismatch. Run one full discharge to hibernate-cutoff, then charge uninterrupted to 100% without using the laptop. That single learn cycle resets the EC's health model and the warning clears.

The Latitude 7480 shows a wildly different percentage every time it wakes from sleep — reads 60%, then jumps to 30% a minute later.

The fuel gauge IC is still running its state-of-charge model against the old cell's chemistry profile. It takes two to three full discharge-and-charge cycles before the IC recalibrates its internal map to the new cell. Do not partially charge during this period — full cycles only. After the third full cycle, the readings should track consistently within a few percent.

System info shows this battery as 38Wh but the spec says 41.61Wh — why is Dell reporting the wrong number?

Dell's system information pulls the Wh figure from the battery EEPROM's rated value field, which can differ from the actual measured capacity of the replacement cell's chemistry. The cell still delivers its full capacity — this is a metadata reporting difference, not a performance reduction. If the discrepancy matters for asset records, run Dell's battery diagnostic tool after two calibration cycles; the reported value sometimes updates once the EC has real cycle data to write back.

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