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

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

Dell Alienware 15 R3 Replacement Battery 11.4V 8300mAh

Up to 18% off
New arrival
From $136.99 USD $165.99
Shipping calculated at checkout.
Fits Dell Alienware 15 R3 and 17 R4 models, replaces OEM part 01D82.
11.4V, 8300mAh capacity sustains the CPU and discrete GPU under full load without voltage sag.
Connector slides straight into the battery bay with a single locking tab on the left side.
We ran full-discharge cycles on an R3 unit; BMS voltage held steady through shutdown, no early cutoff.
After installation, run one full discharge to hibernation then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings that appear after every cell swap.
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

11.4V

Amp

8300mAh

Dell Alienware 15 R3 / 17 R4 — 11.4V Li-ion Replacement Battery (01D82)

This is a 11.4V, 8300mAh (94.62Wh) lithium-ion battery for the Dell Alienware 15 R3 and Alienware 17 R4 series gaming laptops. It replaces OEM part numbers 01D82, 9NJM1, 0HF250, and 0MG2YH. The cell fits the full chassis including ALW17C-D1748, ALW17C-D1758, and over 70 additional variants.

  • Alienware 15 R3 and 17 R4 platform compatibility: Both chassis share the same 11.4V three-cell architecture, connector pinout, and BMS handshake protocol — one cell fits both without modification or adapter.
  • Bench tested on actual hardware: We cycled this cell on an Alienware 17 R4 under sustained CPU and GPU load. The BMS held charge cutoff correctly, balanced across cells without tripping protection, and reported accurate state-of-charge to the BIOS throughout.
  • Post-install calibration on Alienware systems: After fitting, run the laptop down to hibernate cutoff, then charge uninterrupted to 100%. This completes the BIOS battery learn cycle. Skipping it causes the health indicator to report inaccurate warnings for weeks after installation.

BIOS reporting battery health as poor immediately after replacement

Dell's BIOS reads health data from the battery's EEPROM, which stores cycle count and capacity history from the previous cell. When a new cell is installed, that EEPROM data resets to zero or returns values the BIOS doesn't recognise, triggering a false "poor health" or "unknown battery" warning. This is a firmware calibration issue, not a fault with the replacement cell. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100% — the BIOS battery learn cycle overwrites the stale EEPROM read and clears the warning.

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

This happens when the fuel gauge IC hasn't yet calibrated against the new cell's actual discharge curve. The gauge was mapped to the old cell's voltage profile, so it misreads the remaining capacity and signals shutdown before the cell is actually depleted. It's not a faulty cell — it's a calibration lag. Run two to three full discharge and charge cycles to let the fuel gauge IC remap to the new cell. After the third cycle, the reported percentage and actual cutoff voltage should align at or below 11.1V.

Compatible Models

Alienware 15 R3 Alienware 17 R4 ALW17C-D1748 ALW17C-D1758 Alienware 17 ALW17C-D3858S Alienware 17 ALW17C-D3739B ALW17C-D3749PS ALW17C-3848 ALW17C-D3859S ALW15C-D3858S ALW15C-D3848B ALW17C-R5782 Alienware 17 ALW17C-D3848B ALW17C-D3738RB Alienware 17 ALW17C-D3739S ALW17C-D3848S ALW15C-D3748S ALW15C-D3838S ALW17C-R2859S Alienware 17 ALW17C-D3738RS ALW17C-D3768B Alienware 17 ALW17C-D3749PS Alienware 17 ALW17C-D3748S ALW15C-D3736S Alienware 17 ALW17C-D3758S ALW17C-R1760 ALW17C-D3858S ALW15C-D3738S ALW17C-D3739B Alienware 17 ALW17C-D3738RB Alienware 17 ALW17C-D3738S Alienware 17 ALW17C-D3868S ALW17C-D3749US ALW17C-R3738S ALW17C-D3748B ALW15C-D3748B ALW15C-D3859S ALW17C-R5762 ALW17C-D2748 Alienware 17 ALW17C-D3859S Alienware 17 ALW17C-D3768B ALW17C-D3738QB Alienware 17 ALW17C-D3749PB ALW17C-D3848B ALW15C-D3738B ALW15C-D0118B ALW17C-R5982U Alienware 17 ALW17C-D3848S ALW17C-D3868S Alienware 17 ALW17C-D3749US ALW15C-D2858S Alienware 17 ALW17C-D3736S ALW17C-R4760 ALW17C-D3748S ALW17C-D3749B Alienware 17 ALW17C-D3738QB ALW17C-D1848 Alienware 17 ALW17C-D3748B Alienware 17 ALW17C-D3749B ALW15C-D3749S ALW17C-R3738QB ALW17C-D3738S ALW15C-D3858B ALW15C-D3739S ALW17C-D3738RS ALW17C-D2758 ALW17C-D2738 ALW17C-R1748 ALW17C-D1738 Alienware 15 2018 Alienware17 R5 Alienware 15 R4 Alienware 17 R5 Alienware 15

Replaces Part Numbers

01D82 9NJM1 0HF250 0MG2YH HF250 MG2YH

Technical Specifications

Voltage11.4V
Amp Hours8300mAh
Capacity8300mAh
Rate94.62Wh
Net Weight430.8g /15.20 oz
Gross Weight690.8g /24.37 oz
Approximate Weight690.8g /24.37 oz
Dimension 289.10 x 105.92 x 13.08mm

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

The Dell BIOS is showing a wrong Wh rating for this battery — it says 86Wh but the cell is rated 94.62Wh. Is something wrong with the cell?

Nothing is wrong with the cell. The Wh figure the BIOS displays is pulled from the EEPROM on the battery PCB, which stores the manufacturer's rated capacity at a reference discharge rate — not the measured capacity of your specific cell under load. The 94.62Wh is the actual chemistry rating of this replacement. Run the BIOS battery learn cycle (full discharge to hibernate, then uninterrupted charge to 100%) and the reported figure will update to reflect the new cell's data.

My Alienware 15 R3 fuel gauge is jumping around — showing 67%, then 45%, then back to 60% within minutes of unplugging. What's causing this?

The fuel gauge IC on this platform calibrates its discharge curve over the first few cycles against a new cell. After a cell swap, the IC is still using the voltage-to-capacity map it built for the old battery, so it misreads the new cell's state of charge and produces erratic percentage readings. This stabilises after two to three complete discharge and charge cycles. Discharge to hibernate cutoff naturally — don't force it with software — then charge uninterrupted to 100% each time.

The replacement battery stopped charging above 80% on my Alienware 17 R4. The old battery charged to 100% fine.

This is almost always Dell's BIOS-controlled charge limit, not a cell fault. The Alienware BIOS includes a "Conservation Mode" or "Custom Charge" setting that caps charging at 80% to reduce long-term cell stress — it's toggled in the Alienware Command Center or BIOS power settings. Check Command Center under the Power section and confirm the charge limit is set to 100%. If the setting is already at 100% and charging still stops at 80%, reset the BIOS to defaults and re-run the battery learn cycle.

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 Alienware 15 R3 Replacement Battery, 11.4V, 8300mAh, Li-ion 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