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Asus T101-M0I Replacement Battery 3.85V 8200mAh Li-Polymer

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From $78.99 USD $97.99
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Fits Asus T101-M0I and T101HA models; replaces OEM part numbers 0B200-02120000, 0B200-02120100, AD2068520, C12N1604.
3.85V, 8200mAh Li-Polymer cell delivers 31.57Wh to restore full charge cycles on this 10-inch tablet-notebook hybrid.
Connector seats flush into the rear-access battery slot with single locking tab; no adhesive backing required for reinstallation.
We bench-tested the BMS on first charge into the T101HA BIOS firmware; the cell accepted the charge handshake without fault codes.
On first power-on after swap, run a full discharge cycle to the hibernate cutoff point, then charge uninterrupted to 100% to reset the BIOS fuel gauge calibration and clear any stale health warnings.
Extended delivery time

Available by SPECIAL ORDER. Delivery for this product typically takes 2 weeks.

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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

3.85V

Amp

8200mAh

Asus T101HA Series — 3.85V Li-Polymer Replacement Battery (0B200-02120000)

This is a 3.85V, 8200mAh (31.57Wh) Li-Polymer battery for the Asus T101HA and T101-M0I convertible notebooks. It replaces OEM part numbers 0B200-02120000, 0B200-02120100, AD2068520, and C12N1604. Fits the T101HA, T101HA-3D, T101HA-3E, and over fifty additional T101HA variants.

  • T101HA platform compatibility: All T101HA variants share a single battery bay, connector pinout, and BMS handshake protocol. The voltage rail and EEPROM data structure are identical across the 3D, 3E, and M0I sub-models, so one cell covers the full range without hardware modification.
  • Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the T101HA platform. The BMS communicated correctly with the BIOS, charge termination triggered cleanly at capacity, and the protection circuit responded to over-current conditions without nuisance tripping.
  • Post-install calibration on the T101HA: After fitting this cell, run the laptop down to hibernate cutoff under normal use, then charge uninterrupted to 100% without interruption. This resets the BIOS battery learn cycle and clears the false "poor health" warning that appears after every cell swap on this platform.

Why the T101HA BIOS reports poor battery health after a cell swap

The T101HA stores battery health data in EEPROM on the original cell. When a new cell is installed, the BIOS reads residual EEPROM values from its own learned history and flags the battery as degraded before it has run a single cycle. This is a firmware behaviour, not a fault with the replacement cell. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% gives the BIOS enough data to overwrite the stale health flag. After two to three calibration cycles, the reported health figure stabilises.

Laptop shuts down at 20–30% charge shown on the T101HA

This happens when the fuel gauge IC has not yet calibrated against the new cell's actual discharge curve. The OS shows 20–30% remaining, but the IC has mapped that reading against the old cell's degraded profile, so the voltage reading hits the shutdown threshold earlier than expected. It is not a cell defect — the gauge needs two or three full discharge-to-hibernate cycles to relearn the new curve. After calibration, the shutdown point drops back to the correct low-voltage cutoff near 3.0V per cell.

Compatible Models

T101-M0I T101HA T101HA-3D T101HA-3E T101HA-3K T101HA-C4-GR T101HA-GR001T T101HA-GR003T T101HA-GR004T T101HA-GR005T T101HA-GR007T T101HA-GR008T T101HA-GR011T T101HA-GR012T T101HA-GR013T T101HA-GR021T T101HA-GR028T T101HA-GR029T T101HA-GR030T T101HA-GR032T T101HA-GR034T T101HA-GR036T T101HA-GR037T T101HA-GR040T T101HA-GR041T T101HA-GR043T T101HA-GR044T T101HA-GR045T T101HA-GR049T T101HA-GR050T T101HA-GR054T T101HA-GR060T T101HA-GR061T T103HAF T103HAF-8350 T103HAF-AE8302T T103HAF-GE8301T T103HAF-GR007T T103HAF-GR009T T103HAF-GR019T T103HAF-GR021T T103HAF-GR027T T103HAF-GR028T T103HAF-GR032T T103HAF-GR033T T103HAF-GR040T T103HAF-GR051T T103HAF-GR052T T103HAF-GR057R T103HAF-GR057T T103HAF-GR059T T103HAF-GR061T T103HAF-GR070T T103HAF-Q1-CB Transformer Mini T101HA Transformer Mini T101HA-GR011T Transformer Mini T103HA

Replaces Part Numbers

0B200-02120000 0B200-02120100 AD2068520 C12N1604

Technical Specifications

Voltage3.85V
Amp Hours8200mAh
Capacity8200mAh
Rate31.57Wh
Net Weight110.8g /3.91 oz
Gross Weight250.8g /8.85 oz
Approximate Weight250.8g /8.85 oz
Dimension 180.45 x 92.60 x 2.80mm

Product Highlights

  • Brand: Asus
  • 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 Asus T101HA BIOS is showing the battery as "unknown" or 0% right after I installed the new cell — is something wrong with it?

Nothing is wrong with the cell. The T101HA BIOS reads EEPROM data written by the original battery, and a fresh cell arrives with no matching history, so the firmware flags it as unknown until it builds a new dataset. Run the laptop down to hibernate cutoff under normal use, then charge uninterrupted to 100%. After one or two full cycles the BIOS relearns the battery and the unknown status clears.

Windows is showing a different Wh rating for this battery than what the original cell listed — why does the number not match?

The Wh figure shown in Windows pulls from the EEPROM of the installed cell, which stores the rated design capacity. The replacement cell is rated at 31.57Wh, while a used or partially degraded original may have reported a lower full-charge capacity. If the figure shown is higher than the old cell, the new cell is reporting its actual rated value correctly — check Device Manager under Batteries and confirm the design capacity reads 31570mWh.

My T101HA stops charging at around 80% and will not go higher — is the new battery faulty?

This is almost always a BIOS-controlled charge limit, not a cell fault. Asus notebooks include a Battery Health Charging mode in MyASUS or the ASUS Battery Health Charging utility that caps charge at 60%, 80%, or 100% to reduce long-term cell stress. Open MyASUS, go to Customization, and check the Battery Health Charging setting — switch it to Full Capacity Mode and the charge ceiling returns to 100%.

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