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Lenovo IdeaPad U310 L11M3P01 Replacement Battery 11.1V 45.51Wh

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From $113.99 USD $136.99
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Fits Lenovo IdeaPad U310 ultrabooks; replaces OEM part L11M3P01.
11.1V 4100mAh lithium-polymer cell matches the original U310 pack rating.
Connector seats into the battery bay slot with a single locking tab on the left edge.
We bench-tested the cell on a U310-ITH; BMS accepted the pack on first insertion and charged to full without thermal throttle.
On first boot after installation, run a full discharge cycle to system hibernate, 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.

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⚠️ 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

4100mAh

Lenovo IdeaPad U310 — 11.1V Li-Polymer Replacement Battery (L11M3P01)

This is an 11.1V, 4100mAh (45.51Wh) Li-Polymer replacement battery for the Lenovo IdeaPad U310 ultrabook. It fits the U310, U310-ITH, U310-IFI, and U310 Ultrabook variants, among others. Install it when the original cell no longer holds charge or the system reports poor battery health.

  • U310 series compatibility: These models share the same 11.1V three-cell configuration, connector pinout, and BMS handshake protocol. The L11M3P01 part number covers the full U310 lineup because the voltage rail and EEPROM communication spec did not change across trim levels.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a U310 unit. The BMS negotiated correctly, the fuel gauge IC registered capacity without error flags, and the system accepted the cell without triggering an unknown battery warning.
  • First-cycle calibration on the U310: After installing, run one full discharge until the laptop hibernates at the low-voltage cutoff, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears after every cell swap on this platform.

BIOS reporting battery health as poor after fitting a new L11M3P01

The U310 BIOS reads capacity data stored in the cell's EEPROM and compares it against its own learned baseline from the previous battery. A new cell with different EEPROM values triggers a health warning immediately on first boot — this is a data mismatch, not a fault with the replacement. The fix is a full learn cycle: discharge to hibernate cutoff, then charge to 100% without interruption. After two to three cycles the BIOS recalibrates and the warning clears.

U310 shutting down at 20–30% charge shown on screen

This happens when the cell voltage drops below a sustainable threshold under combined CPU and display load before the fuel gauge reaches zero. The fuel gauge IC is reading state-of-charge from a profile built on the old, degraded cell — it does not yet know the new cell's discharge curve. The laptop hits the hardware undervoltage cutoff while the OS still shows charge remaining. Run two full discharge-to-hibernate cycles followed by uninterrupted charges to 100%, and the fuel gauge IC will remap its profile to the new cell's actual voltage curve.

Compatible Models

IdeaPad U310 IdeaPad U310-ITH IdeaPad U310-IFI IdeaPad U310 Ultrabook IdeaPad U310 4375 43752CU IdeaPad U310-4375-2YU IdeaPad U310 43752CU IdeaPad U310 43754DJ IdeaPad U310 43754C IdeaPad U310 MAG6BGE IdeaPad U310 MAG62GE IdeaPad U310 MAG66GE IdeaPad U310 MAG6JU310 MAG6B IdeaPad U310 MAG62 IdeaPad U310 MAG67GE IdeaPad U310 43752BU IdeaPad U310 4375-62G IdeaPad U310 4375-64G IdeaPad U310 59351642 IdeaPad U310 59351647 IdeaPad U310 59351641 IdeaPad U310 4375 IdeaPad U310 4375-B2U IdeaPad U310 4375-B8U IdeaPad U310 4375-B9U IdeaPad U310 4375-BAU 4375B2U IdeaPad U310 4375B8U IdeaPad U310 4375B9U IdeaPad U310 4375BAU IdeaPad U310 4375BGU IdeaPad U310 4375BHU IdeaPad U310 4375BJU IdeaPad U310 4375BFU ThinkPad S5-S531 ThinkPad S531 ThinkPad S5 Ideapad U410

Replaces Part Numbers

L11M3P01

Technical Specifications

Voltage11.1V
Amp Hours4100mAh
Capacity4100mAh
Rate45.51Wh
Net Weight246g /8.68 oz
Gross Weight506g /17.85 oz
Approximate Weight506g /17.85 oz
Dimension 198.75 x 197.00 x 6.90mm

Product Highlights

  • Brand: Lenovo
  • 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 U310 shows the new battery as 0% and won't charge past that — what's happening?

The fuel gauge IC still holds the discharge profile from the old cell in memory, and the EEPROM data on the new cell doesn't match what the BIOS expects. This causes the OS to report 0% or refuse to increment charge at all. Force the BIOS learn cycle: power the laptop down to hibernate on battery alone, then plug in and charge uninterrupted to 100%. After two full cycles the fuel gauge IC rebuilds its profile against the new L11M3P01 and percentage tracking stabilises.

System info shows the wrong Wh rating — 38Wh instead of 45Wh — after fitting this cell. Is it faulty?

No — the Wh figure displayed in Windows or Lenovo Vantage is read from the EEPROM on the cell, and replacement cells sometimes carry a rated design capacity rather than the measured actual chemistry value. The L11M3P01 is rated 45.51Wh. If the system shows a lower number, run a full discharge-to-hibernate cycle followed by a 100% charge. After one or two cycles the BIOS updates its learned capacity figure and the reported Wh value corrects itself.

New battery charges fine but the U310 still cuts out suddenly under heavy load — screen plus video plus CPU at once.

This is a voltage sag issue. Under simultaneous high CPU, GPU, and display load, current draw spikes and the cell voltage dips sharply. If the fuel gauge hasn't completed calibration, the BMS hits its undervoltage protection threshold before the OS registers low charge. The system cuts power to protect the cell, even with 30% or more shown on screen. Complete two full learn cycles — discharge to hibernate, charge uninterrupted to 100% — so the fuel gauge IC maps the cell's real voltage-to-capacity curve and the BMS cutoff aligns with actual depletion.

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