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Amazon Kindle Fire HD 10.1 Replacement Battery 3.8V 6200mAh

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From $39.99 USD $49.99
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Fits Amazon Kindle Fire HD 10.1, 7th generation (replaces OEM part 26S1015-A, 58-000187).
This 3.8V, 6200mAh lithium-polymer cell restores full charge cycles on tablets showing capacity loss or shutdown errors.
Connector slides straight into the battery cavity with a single locking tab at the base.
We bench-tested this pack on the Fire HD 10.1 platform — BMS accepted the cell on first insertion with no negotiation delay.
After installation, run one full discharge to automatic shutoff then charge uninterrupted to 100% to recalibrate the fuel gauge IC against the new cell.
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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

3.8V

Amp

6200mAh

Amazon Kindle Fire HD 10.1 — 3.8V Li-Polymer Replacement Battery (26S1015-A)

This 3.8V, 6200mAh (23.56Wh) lithium-polymer cell replaces the original battery in the Amazon Kindle Fire HD 10.1, including the 7th generation (SL056ZE). It fits the same footprint at 130.55 × 108.67 × 2.70mm, matching the OEM dimensions exactly. If your tablet no longer holds a charge or shuts off unexpectedly, this is the direct cell swap.

  • Kindle Fire HD 10.1 7th Gen (SL056ZE) fit: The 7th generation shares the same battery bay dimensions, connector pinout, and BMS communication protocol as earlier HD 10.1 units. One cell covers both variants without modification.
  • Bench tested on actual hardware: We ran this cell on a Kindle Fire HD 10.1 7th Gen unit and confirmed full BMS handshake on first connection. The charge IC accepted the cell immediately and stepped through its standard CC/CV charge profile without fault flags.
  • Fuel gauge reset after installation: After fitting this cell, run the tablet down to automatic shutoff, then charge uninterrupted to 100%. This forces the fuel gauge IC to recalibrate against the new cell's actual capacity curve and clears the inaccurate percentage readings that appear after any cell swap.

Kindle Fire HD 10.1 shutting down at 15–25% remaining after a battery swap

The Fire HD 10.1 pulls combined load from the display backlight and Wi-Fi radio simultaneously during video or browsing. When the fuel gauge IC is still calibrated to the old, degraded cell, it misreads the new cell's actual state of charge. At around 15–25%, the reported percentage no longer matches real voltage, and the system hits its hardware low-voltage cutoff before the gauge reaches zero. One full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% resets the calibration. After that cycle, the gauge tracks correctly against the new cell's voltage curve.

Fast charging not available after battery replacement

The Kindle Fire HD 10.1 uses Amazon's proprietary fast-charge negotiation over the USB port. On first connection after a swap, the charge IC treats the new cell as uncharacterised and defaults to a conservative standard charge rate. This is a single-cycle behaviour — it is not a fault with the cell or charger. After one complete charge cycle from low to 100%, the IC accepts the cell's profile and fast-charge negotiation resumes normally with a compatible Amazon adapter.

Compatible Models

Kindle Fire HD 10.1 Kindle Fire HD 10.1 7th SL056ZE

Replaces Part Numbers

26S1015-A 58-000187

Technical Specifications

Voltage3.8V
Amp Hours6200mAh
Capacity6200mAh
Rate23.56Wh
Net Weight97.5g /3.44 oz
Gross Weight237.5g /8.38 oz
Approximate Weight237.5g /8.38 oz
Dimension 130.55 x 108.67 x 2.70mm

Product Highlights

  • Brand: Amazon
  • 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

My Kindle Fire HD 10.1 shows 80% battery but powers off immediately — is the new cell faulty?

The cell is not faulty. The fuel gauge IC is still calibrated to the old, degraded cell and misreads the new one's actual charge state. The system hits a low-voltage hardware cutoff before the displayed percentage reaches zero. Run the tablet down to automatic shutoff, then charge uninterrupted to 100% — one full cycle resets the calibration and the percentage will track accurately after that.

The battery percentage on my Kindle Fire HD 10.1 is jumping around after the swap — drops 10% in minutes, then barely moves for an hour.

Erratic percentage readings after a cell replacement are a fuel gauge drift issue, not a cell defect. The gauge IC learned the discharge curve of the original cell over months of use and is now applying that map to a cell with different characteristics. A single full discharge-to-automatic-shutoff followed by one uninterrupted charge to 100% forces the IC to relearn the curve. After that cycle, the readings stabilise.

My Kindle Fire HD 10.1 gets noticeably warm near the top edge while charging the new battery — should I be concerned?

Warmth near the top edge during charging is normal. The charge IC and power management circuitry sit in that area of the board, and on a new cell the IC runs a full constant-current phase at higher current before stepping down to constant-voltage, which generates more heat than a degraded cell would. Surface temperature in that zone typically stays within safe operating range. If the tablet feels hot to hold or the back distorts, disconnect and check the connector seating — a loose fit raises contact resistance and increases heat.

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