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

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

Wooking S17 Pro-8U Replacement Battery 15V 4200mAh

Up to 19% off
New arrival
From $79.99 USD $98.99
Shipping calculated at checkout.
Fits Wooking S17 Pro-8U laptop; replaces original 15V Li-Polymer battery pack.
15V 4200mAh (63Wh) restores full unplugged runtime on S17 Pro-8U notebooks.
Connector type and orientation match S17 Pro-8U slot; physical fit verified at 199.40 x 87.60 x 11.60mm.
Bench testing showed clean BMS handshake on first charge cycle; voltage hold stable under sustained CPU load.
Run one complete discharge to hibernation, then uninterrupted charge to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings that appear after 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 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

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

15V

Amp

4200mAh

Wooking S17 Pro-8U — 15V Li-Polymer Replacement Battery

This is a 15V, 4200mAh (63Wh) Li-Polymer replacement battery for the Wooking S17 Pro-8U laptop. It slots directly into the S17 Pro-8U and restores unplugged computing when the original cell has degraded or failed to hold charge. Voltage and connector match the original specification for this notebook.

  • S17 Pro-8U platform fit: The S17 Pro-8U runs a 15V charging rail with a battery management system that checks cell voltage and connector pinout at startup. This replacement matches both, so the BMS handshake completes without triggering an incompatibility error on boot.
  • Bench tested on actual hardware: We ran charge and discharge cycles on this cell and logged BMS communication throughout. The protection circuit responded correctly to full-charge cutoff and low-voltage cutoff without dropping the connection mid-session.
  • First-cycle reset after install: After fitting this battery, run the laptop down to hibernate cutoff on battery only, then charge uninterrupted to 100%. This forces the BIOS to complete a full battery learn cycle and clears the inaccurate health warning that appears after every cell swap on the S17 Pro-8U.

BIOS reporting poor battery health on the S17 Pro-8U after a cell swap

The S17 Pro-8U BIOS reads health data stored in the old cell's EEPROM. When a new cell is fitted, that EEPROM data is gone and the BIOS flags the battery as unknown or degraded. This is not a fault with the replacement cell — it is the system reacting to missing historical charge data. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% resets the learn cycle and the warning clears. If it does not clear after two full cycles, check BIOS firmware is current.

S17 Pro-8U shutting down unexpectedly at 20–30% charge shown

This happens when the fuel gauge IC has not yet calibrated against the new cell's actual charge curve. The gauge shows 25% but the cell voltage has already dropped below the BMS cutoff threshold under combined CPU and display load. The fix is two or three full discharge-to-hibernate cycles so the fuel gauge IC can map the new cell's voltage profile accurately. After calibration, the OS percentage readout and actual cutoff voltage will align — the cell should sustain voltage above 13V at the 20% mark under normal load.

Compatible Models

S17 Pro-8U

Technical Specifications

Voltage15V
Amp Hours4200mAh
Capacity4200mAh
Rate63Wh
Net Weight296.2g /10.45 oz
Gross Weight436.2g /15.39 oz
Approximate Weight436.2g /15.39 oz
Dimension 199.40 x 87.60 x 11.60mm

Product Highlights

  • Brand: Wooking
  • 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

The S17 Pro-8U shows 0% or "unknown" in battery settings right after fitting the new cell — is it faulty?

No. The BIOS pulled health and capacity data from the old cell's EEPROM, and that data no longer exists on the new cell. Run the laptop down to hibernate cutoff on battery power only, then charge uninterrupted to 100%. That completes the BIOS battery learn cycle and the reading corrects itself within two full cycles.

Why does the fuel gauge on my S17 Pro-8U jump around wildly for the first few uses after swapping the battery?

The fuel gauge IC calibrates its charge curve against cycle history stored with the original cell. With a new cell fitted, it has no reference data and estimates poorly for the first few charges. Put the laptop through three complete discharge-to-hibernate and full-charge cycles without interrupting the charge. After the third cycle the IC has enough data points to track the new cell's voltage curve accurately and the percentage readout stabilises.

System info on the S17 Pro-8U is reporting a different Wh rating than the 63Wh listed for this battery — which figure is correct?

The figure shown in system info is read from the cell's EEPROM, which stores the manufacturer's rated Wh value at cell production. Minor differences between that EEPROM value and the 63Wh listed in the product data reflect rounding and rated-versus-actual chemistry tolerances — not a capacity defect. The 63Wh in the product data is the correct specification for this replacement cell. If the system reports a value significantly lower than 63Wh after two full calibration cycles, check that the BIOS firmware on the S17 Pro-8U is up to date.

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

Hasee G97E Replacement Battery, 15V, 4200mAh, 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