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Clevo P650RG-G Replacement Battery 14.8V 4000mAh P6MBAT-4

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From $90.99 USD $111.99
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Fits Clevo P650RG-G and 73 related models; replaces OEM part P6MBAT-4, 6-87-P650S-4252, P650BAT-4.
14.8V 4000mAh lithium-ion cell delivers 59.2Wh for full-load gaming and productivity sessions on this platform.
Connector aligns with Clevo's proprietary contact block; locking tab seats flush into the underside battery bay slot.
We ran discharge cycles under sustained CPU and GPU load; the BMS held 14.8V rail steady through cutoff, no early dropout.
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.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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

14.8V

Amp

4000mAh

Clevo P650RG-G Series — 14.8V Li-ion Replacement Battery (P6MBAT-4)

This is a 14.8V, 4000mAh (59.2Wh) Li-ion battery for the Clevo P650RG-G and related high-performance gaming notebooks. It replaces OEM part numbers P6MBAT-4, 6-87-P650S-4252, and P650BAT-4. Confirmed fit across the P650, P651, and P655 chassis lines.

  • P650/P651/P655 chassis compatibility: These models share the same 14.8V four-cell battery architecture, connector pinout, and BMS handshake protocol. The P6MBAT-4 part number covers all variants in this generation, including the P651HS-G, P650HP6-G, and P655SE.
  • Bench tested on actual hardware: We cycled this cell on a P650 chassis under combined CPU and GPU load. The BMS held the charge curve correctly across the full 14.8V range, and low-voltage cutoff triggered at the expected threshold without premature shutdown.
  • Post-swap recalibration on the P650 platform: After fitting a new cell, run one full discharge to hibernate-level cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears in the system tray immediately after every cell swap.

Laptop shuts down at 20–30% remaining on the P650 under GPU load

The P650RG-G pairs a high-TDP CPU with a discrete GPU that draws heavily during gaming. When the combined load spikes, the battery must sustain voltage above the BMS cutoff threshold. A degraded or freshly installed uncalibrated cell can hit a voltage cliff — dropping below 12V under load — even while the OS fuel gauge still reads 25%. The BIOS interprets this as a fault and forces an immediate shutdown. Run a full calibration cycle first: discharge to hibernate cutoff under light load, then charge to 100% without interruption. After two full cycles, the fuel gauge IC re-maps the cell's actual discharge curve and the premature shutdowns stop.

BIOS shows 0% or "unknown battery" immediately after fitting the new cell

The P650 BIOS reads EEPROM data embedded in the battery pack to verify cell identity and charge state. When a new cell arrives with a zeroed or mismatched EEPROM register, the BIOS cannot reconcile the data and flags the battery as unknown or reports 0% regardless of actual charge. This is not a fault with the cell itself. Plug into AC power, allow the system to boot fully, and let the charge controller begin a supervised charge cycle. Once the BIOS completes its first full charge read, the register updates and the health status resolves to a normal percentage.

Compatible Models

P650RG-G P651HS-G P650HP6-G P655SE P670RE3 P651RE3 P651RS-G P670RG P670HS-G P671HS-G P671RE3 P655RE3 Z7S2 P651SE P671RG-G P670RP6-G P650RS-G P671RS-G P670RA P650RA P650HS-G P655HP6-G P670RE6-G P655RE6-G P670RS-G P651HP6 P650RG P655RA P650HP3-G P655SA P671RE6-G P650RE3-G P651RG-G P670-RG P651RG P651RP6-G P671HP6-G P670RE3-G P651RE3-G P651SA P670RG-G P670HP6-G P650RP6-G P671RP6-G P671RE3-G P655RE3-G P655HP3-G P670RE6 P655RE6 P670RS P651HP3-G P671SA P671RA P651RA P651HS P655RP6-G P671RE6 P650RE3 P651HP6-G P671RG P650RE6 P650RP6 P651RE6-G P671SE P670SG P650RE6-G P651RE6 P651RE P670SE P671SG Z7M T5S P651SG P650SG P650SA P650SE Z8

Replaces Part Numbers

P6MBAT-4 6-87-P650S-4252 P650BAT-4

Technical Specifications

Voltage14.8V
Amp Hours4000mAh
Capacity4000mAh
Rate59.2Wh
Net Weight329g /11.61 oz
Gross Weight469g /16.54 oz
Approximate Weight469g /16.54 oz
Dimension 221.64 x 99.10 x 15.10mm

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

Why does Windows show the wrong Wh rating after I installed the new P650 battery?

The fuel gauge IC reads the Wh value stored in the battery pack's EEPROM, not the actual cell chemistry. A new cell's EEPROM may carry the rated spec figure, which can differ slightly from the recalculated value Windows Energy Report generates after a full cycle. Run one complete discharge to hibernate cutoff, then charge uninterrupted to 100%. After that cycle, Windows recalculates and logs the correct Wh figure.

The fuel gauge is jumping around — showing 60%, then 45%, then 70% within minutes on the P650. What's wrong?

The fuel gauge IC on the P650 platform needs several full charge-discharge cycles to map the new cell's actual capacity curve. Fresh cells have no history in the IC, so voltage-based estimates swing wildly until the IC builds a reference. This is not a defective battery. Run two to three complete discharge and charge cycles under normal use, and the gauge will stabilise to within a few percent of actual charge state.

New battery charges to 80% then stops — the P650 won't charge past that point. Is the cell faulty?

This is almost always a BIOS-controlled charge limit, not a cell fault. Clevo and many OEM firmware builds include a charge ceiling setting — often enabled by default or triggered after a battery swap — that caps charging at 80% to reduce cell wear. Check the BIOS under the Power or Battery section and disable the charge limit, or set it to 100%. If no BIOS option is visible, check whether a Clevo or reseller control panel utility is running in the background and enforcing the cap there.

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