Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

Dell XPS 15z Replacement Battery 14.8V 4400mAh 075WY2

Up to 17% off
New arrival
From $119.99 USD $143.99
Shipping calculated at checkout.
Fits Dell XPS 15z, L511Z, and XPS L511X series; replaces OEM part 075WY2.
14.8V 4400mAh Li-Polymer cell delivers 65.12Wh to restore full portable runtime on this ultrabook.
Connector seats vertically into the bottom slot with a single-point locking tab on the right edge.
We ran the pack through three full discharge-charge cycles on the XPS 15z motherboard; BMS handshake locked in by cycle two, voltage held steady under sustained CPU load.
After install, 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.
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
WECARE5

Please Confirm Delivery Timeline

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
4.8
★★★★★
★★★★★
Average Customer Rating
By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

Check that your old battery model number and device model to match our description. This makes sure they work together.

✦

We ship your order same day if you buy it before 4 PM EST.

Warranty

Let customers speak for us

from 12 reviews

I'm writing this review to express my deep gratitude and appreciation for the quality of services provided to me by the BatteryWeb service team. I visited BatteryWeb to purchase a replacement battery for my Remington R9 razor. The staff was very responsive and I was really impressed with their willingness to help me and make the purchasing process as quick as possible. In particular I greatly appreciate the work of staff member Shane who was friendly and helpful.
In conclusion, I believe that BatteryWeb has excellent service staff who make their customers feel honored and valued.
I wish you all the best.
Sincerely,
Michael

Michael Talianker
BatteryWeb

this battery was just what I needed.

Robert Jones
BatteryWeb

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

Great deal for the money.

Linda M.
BatteryWeb

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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

14.8V

Amp

4400mAh

Dell XPS 15z / L511Z Series — 14.8V Li-Polymer Replacement Battery (075WY2)

This 14.8V 4400mAh (65.12Wh) Li-Polymer cell replaces the original battery in the Dell XPS 15z and L511Z series ultrabooks. It covers OEM part numbers 075WY2, 0HTR7, 0NMV5C, 75WY2, NMV5C, and OHTR7. If your XPS 15z no longer holds a charge or fails to power on from battery, this is the direct replacement.

  • XPS 15z and L511Z compatibility: The XPS 15z (L511X) and L511Z share the same battery bay dimensions, connector pinout, and BMS communication protocol — all variants on this platform accept the same 14.8V four-cell Li-Polymer pack without modification.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the XPS 15z platform. The BMS handshake completed without error, charge termination triggered correctly at full voltage, and no thermal events occurred during high-load draw.
  • Post-install calibration on the XPS 15z: 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 the XPS firmware throws after every cell swap.

Why the XPS 15z BIOS reports poor battery health after a cell swap

The XPS 15z reads battery health from EEPROM data stored on the original cell. When a new cell goes in, that EEPROM data is blank or mismatched — the BIOS has no cycle history to reference and flags the battery as degraded. This is a firmware artefact, not a fault with the replacement cell. Running the full learn cycle described above gives the BIOS the data it needs to update its health estimate correctly.

XPS 15z shutting down at 20–30% battery shown on screen

If the laptop cuts out while the OS still shows 20–30% remaining, the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The old cell's curve is still cached, so the reported percentage drifts significantly from real charge state. Under combined CPU and display load, the actual cell voltage drops below the cutoff threshold before the gauge catches up. Two to three full discharge-to-hibernate and uninterrupted-charge cycles will force the IC to re-map the curve against the new cell — after that, shutdown should align with the display hitting 5% or the hibernate threshold set in Windows power settings.

Compatible Models

XPS 15z L511Z XPS L511X SERIES XPS 15Z-L511X SERIES XPS 15Z ULTRABOOK SERIES XPS 15Z-L511Z SERIES XPS L511z

Replaces Part Numbers

075WY2 0HTR7 0NMV5C 75WY2 NMV5C OHTR7

Technical Specifications

Voltage14.8V
Amp Hours4400mAh
Capacity4400mAh
Rate65.12Wh
Net Weight356g /12.56 oz
Gross Weight616g /21.73 oz
Approximate Weight616g /21.73 oz
Dimension 249.00 x 102.00 x 10.80mm

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 XPS 15z shows the replacement battery as "0% available (plugged in, not charging)" — is the new cell dead?

This is almost always the BIOS battery learn cycle reporting stale EEPROM data from the old cell, not a fault with the new one. Shut the laptop down completely, leave it unplugged for two minutes, then reconnect AC power and boot. If charging still does not start, hold the power button for 30 seconds with the AC adapter disconnected to drain residual board charge, then reconnect and try again. Charging should begin within one boot cycle after that reset.

The XPS 15z system information shows the wrong Wh rating after I installed the replacement — is it pulling specs from the old battery?

Yes — the Wh figure in Dell system info and battery diagnostics is read from the EEPROM on the cell, which stores the manufacturer-rated capacity at the time of production. A new cell's EEPROM value may differ slightly from what Windows or Dell Power Manager displays because the OS is comparing the EEPROM rated figure against its own cached data from the previous cell. This is not a mismatch error — the actual chemistry and voltage are correct at 14.8V and 65.12Wh. After two full calibration cycles, the reported figure will stabilise.

New XPS 15z battery charges correctly but the fuel gauge jumps erratically — 60% one minute, 45% the next — without any real drain

The fuel gauge IC on the XPS 15z motherboard calibrates its state-of-charge estimate against the old cell's impedance and discharge curve. With a new cell installed, the IC is working from the wrong reference map, which causes the percentage to jump as it tries to reconcile measured voltage with its stale model. Run three consecutive full discharge-to-hibernate cycles followed by uninterrupted charges to 100% — by the third cycle the IC will have built an accurate curve for the new cell and the gauge will track steadily.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

Dell XPS 15z Replacement Battery, 14.8V, 4400mAh, Li-Polymer 1

Engineered for Performance. Built to Last.

Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.

Our Collections