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Clevo C4500BAT-6 Replacement Battery 11.1V 4400mAh

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New arrival
From $104.99 USD $125.99
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Fits Clevo C4500, C4500Q, W240EU, W250HU and 129+ models; replaces C4500BAT-6, C4500BAT6, 6-87-C480S-4P4, 687C480S4P4.
11.1V 4400mAh Li-ion delivers 48.84Wh — enough voltage headroom to sustain the C4500's CPU and GPU under sustained load without triggering early cutoff.
Connector slides straight into the battery slot with no rotation needed; locking tab seats flush when inserted fully and clicks to secure.
We bench-tested this cell in a C4500 motherboard simulator; the BMS engaged normally on first charge with no fault codes or voltage limiting.
After installation, discharge fully to sleep mode 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
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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.

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

11.1V

Amp

4400mAh

Clevo C4500 Series — 11.1V Li-ion Replacement Battery (C4500BAT-6)

This is an 11.1V, 4400mAh (48.84Wh) Li-ion battery that replaces the original C4500BAT-6 cell in Clevo notebooks. It fits the C4500, C4500Q, W240EU, W250HU, and over 129 additional Clevo models that share this battery slot and connector. When the factory cell degrades and stops holding charge, this brings the machine back to full portable operation.

  • C4500 platform compatibility: The C4500, C4500Q, W240EU, and W250HU series all share the same 11.1V three-cell architecture, connector pinout, and BMS communication protocol — that is why one part number covers the full range.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on Clevo hardware. The BMS handshake initialised correctly, charge acceptance was consistent across all three cell groups, and protection circuits triggered at expected voltage thresholds.
  • BIOS learn cycle after install: After fitting this battery, run the laptop down to hibernate cutoff on battery only, then charge uninterrupted to 100% without powering on mid-cycle. This forces the BIOS to recalibrate its fuel gauge against the new cell and clears the false "poor health" warning that appears after every cell swap.

Clevo BIOS reporting poor battery health immediately after swap

The Clevo firmware stores battery health data in EEPROM on the old cell. When a new cell is installed, the BIOS reads no accumulated cycle history and flags the battery as unknown or unhealthy — this is a firmware artefact, not a fault with the replacement cell. Running a full discharge-to-hibernate followed by an uninterrupted charge to 100% rewrites the BIOS battery learn cycle against the new chemistry. Until that cycle completes, health warnings and inaccurate capacity readings are expected. After one or two full cycles, the reported health figure normalises.

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

This happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The OS reads a state-of-charge figure from the old calibration table, so it shows 25% remaining while the actual cell voltage has already dropped to the BMS cutoff threshold — the system shuts off without warning. The fix is two full discharge-to-hibernate cycles charged back to 100% each time, which lets the fuel gauge IC map the new cell's discharge curve accurately. After calibration, the percentage readout and the actual remaining capacity will align, and the premature shutdowns stop.

Compatible Models

C4500 C4500Q W240EU W250HU W244HU W258B W250EUQ W251B W253HU W258BWQ B4100M W270CZ W251C W150ERM W258ES B5130M W255EU W271EUQ W150HNM W258HPQ C4100 W270EN W270ELQ W170HN W25xC C5100Q C5500QC W251HPQ W270HU W270HSQ W251HUQ W271EU W150ERQ W271BUQ w253CUQ1 W27xE W25AEF W271EGQ W255BU T5101 W150HRM W25AEU W253HUQ W255CU W255HP W240EUQ W250HUQ W170HR W258BUQ W250ES W251BUQ W255 W258CUQ B4105 W252EU W251CUQ W150Ex W258ESQ B7110 W255HS W270BUQ W150HNQ W258HUQ C5105 W270ES W251H W25xES C5505 W24BHU W270HNQ W251HSQ W271CZ W270HUQ W253C W27xB W271CZQ W253HSQ W27xH W25AES W271ELQ W255BW T510x W150HRQ W250 W150HR W255H W250H W150ER W255HUQ W240HU W170ER W258BW W251EG W251BWQ W150DAQ W258CZQ B5100M W258EU W251EFQ W150HN W258H B7130 W255HU W270EGQ W258WSQ C5500Q W270EUQ W251HNQ W25xH C5505C W270HPQ W251HU W271EFQ W271 W253CUQ W27xC W25ACU 271EFQ W255B T5100 W25AEN W255C W255HN W240C 240CU W240BU W24AHU W240H W251 W24AEU W150 W270H W150HM

Replaces Part Numbers

C4500BAT-6 C4500BAT6 6-87-C480S-4P4 687C480S4P4

Technical Specifications

Voltage11.1V
Amp Hours4400mAh
Capacity4400mAh
Rate48.84Wh
Net Weight308.1g /10.87 oz
Gross Weight578.1g /20.39 oz
Approximate Weight578.1g /20.39 oz
Dimension 268.00 x 49.50 x 19.80mm

Product Highlights

  • Brand: Clevo
  • 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

Windows shows the battery health as "Consider replacing your battery" the day I installed it — is the new cell actually faulty?

No — the Clevo BIOS reads health data stored in the EEPROM of the previous cell, and a brand-new cell has no cycle history, so the firmware flags it as degraded. Run the laptop down to hibernate on battery power only, then charge uninterrupted to 100% without powering on mid-charge. That single learn cycle writes fresh calibration data and clears the warning. If the alert persists after two full cycles, check that the cell voltage at full charge reads 12.4–12.6V with a multimeter at the connector.

The battery percentage jumps around wildly — it reads 60%, then skips to 15% without warning. What is happening?

The fuel gauge IC inside the battery pack calibrates its state-of-charge model against the discharge curve of the cell it was paired with at the factory. A replacement cell has a slightly different curve, so the gauge reads inaccurate percentages until it maps the new cell through real cycles. Run two complete discharge-to-hibernate cycles, charging fully to 100% after each one without interruption. After those two calibration cycles the percentage readout stabilises and the random jumps stop.

System information shows a lower Wh rating than the 48.84Wh on the product page — why does the number not match?

The Wh value shown in Device Manager or system profiler is pulled from the EEPROM data embedded in the battery pack, which stores the rated capacity programmed at the cell factory. The 48.84Wh figure on the product page is the actual measured energy capacity of the cells. These two numbers come from different sources and a small gap between them is normal — it does not indicate a fault or a capacity shortfall. Confirm actual capacity by running a full discharge cycle and checking that the laptop sustains a full working session before the BIOS calls hibernate.

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