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Lenovo Legion Go 8APU1 Replacement Battery 7.82V 10200mAh

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From $76.99 USD $94.99
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Fits Lenovo Legion Go 8APU1 handheld gaming console, replaces OEM part number 5B11M36296.
7.82V, 10200mAh lithium-polymer cell restores full charge capacity for extended gaming sessions.
Connector seats flush into the battery compartment; locking tab engages on insertion and holds without rocking.
We bench-tested this cell against the stock pack—BMS accepted the swap without fault codes or voltage sag under sustained CPU load.
On first charge after installation, run a full discharge cycle to system cutoff, then charge uninterrupted to 100% to reset the BIOS battery learn cycle and clear inaccurate health warnings.
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.

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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

7.82V

Amp

10200mAh

Lenovo Legion Go 8APU1 — 7.82V Li-Polymer Replacement Battery (5B11M36296)

This 7.82V, 10200mAh (79.76Wh) lithium-polymer battery is a direct cell replacement for the Lenovo Legion Go 8APU1 handheld gaming console. It fits the internal battery bay and connects to the same BMS harness as the original. OEM part numbers covered include 5B11M36296, 5B11M36298, L23B2PK0, L23C2PK0, L23D2PK0, and related variants.

  • Legion Go 8APU1 fitment: All listed OEM part numbers share the same 7.82V two-cell configuration, identical connector pinout, and BMS handshake protocol. Swapping between them does not require firmware changes — the BIOS reads cell data from the EEPROM on the protection board.
  • Bench tested on actual hardware: We cycled this cell through full charge and load discharge on the Legion Go platform. The BMS communicated correctly, charge termination triggered at the expected voltage, and no false over-temperature flags fired during sustained GPU and CPU load.
  • Post-installation calibration: After fitting this cell, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning the system logs after every cell replacement.

BIOS reporting poor battery health immediately after replacement

The Legion Go stores battery wear data in EEPROM on the original protection board. When a new cell installs, the BIOS reads stale wear metrics carried over from the old pack and flags the battery as degraded before any real usage. This is a data mismatch, not a cell fault. Running the battery learn cycle — full discharge to hibernate, full uninterrupted charge to 100% — rewrites the learned capacity baseline and clears the warning.

Legion Go shutting down at 20–30% charge shown on screen

This happens when the fuel gauge IC's stored discharge curve no longer matches the new cell's actual voltage profile. Under sustained GPU and CPU load, the cell voltage drops faster than the old curve predicts, hitting the BMS cutoff threshold while the OS still shows 20–30% remaining. The fix is calibration: discharge fully to automatic hibernate, then charge to 100% without interruption for two consecutive cycles. After the second cycle, the fuel gauge recalculates against the new cell and shutdown behaviour normalises.

Compatible Models

Legion Go 8APU1

Replaces Part Numbers

5B11M36296 5B11M36298 L23B2PK0 L23C2PK0 L23D2PK0 L23L2PK0 L23M2PK0 SB11M36297 SB11M36299

Technical Specifications

Voltage7.82V
Amp Hours10200mAh
Capacity10200mAh
Rate79.76Wh
Net Weight257g /9.07 oz
Gross Weight307g /10.83 oz
Approximate Weight307g /10.83 oz
Dimension 156.20 x 62.70 x 11.00mm

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 Legion Go's battery shows 0% or "unknown" in Lenovo Vantage right after I put the new cell in — is it dead?

No — the EEPROM on the replacement cell carries no usage history, so Vantage reads an empty or corrupt health record and displays 0% or unknown. Run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. After that single learn cycle, Vantage recalculates from the new cell's actual data and the reading corrects itself.

Lenovo Vantage shows this battery's capacity as lower than 79.76Wh in the system info — why is there a discrepancy?

The Wh figure displayed in Vantage pulls from the EEPROM's rated design capacity field, which may differ slightly from the cell's actual electrochemical capacity at first read. This is an EEPROM data difference, not a defective cell. After two full calibration cycles — discharge to hibernate, charge to 100% — the fuel gauge IC updates its learned capacity and the reported Wh figure aligns closer to the rated 79.76Wh.

My Legion Go charges fine but the battery percentage jumps around wildly for the first few uses — normal or faulty?

This is a fuel gauge IC calibration issue, not a faulty cell. The IC is still mapping its discharge curve against the new cell's voltage characteristics, so the percentage reading is interpolating from incomplete data. It stabilises after two to three full cycles from hibernate cutoff to 100%. If the gauge is still erratic after five full cycles, check that no background apps are interrupting the charge before it reaches 100%.

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