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Amazon Kindle Fire HD 10 ST10 Replacement Battery 3.7V 3800mAh

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From $31.99 USD $39.99
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Fits Amazon Kindle Fire HD 10 tablets; replaces OEM part ST10, ST10A, 58-000119, 26S1008.
3.7V, 3800mAh lithium-polymer cell delivers full power to display and processor loads.
Connector mates directly to the Fire HD 10 battery port with positive terminal orientation.
Bench testing showed normal BMS response on first charge with no fault codes or thermal drift.
After installation, run one full discharge to automatic shutoff then charge uninterrupted to 100% — this resets the fuel gauge IC calibration against the new cell and resolves inaccurate percentage display.
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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

3.7V

Amp

3800mAh

Amazon Kindle Fire HD 10 — 3.7V Li-Polymer Replacement Battery (ST10)

This 3.7V, 3800mAh lithium-polymer battery replaces the original cell in the Amazon Kindle Fire HD 10 and Kindle Fire HD 10.1 tablets (models SR87CV, B00VKIY9RG). It fits the same physical footprint at 115.44 x 99.20 x 2.42mm and connects to the same charge IC and fuel gauge circuit. Use this when the original cell no longer holds a charge or shuts the tablet down early.

  • Kindle Fire HD 10 and 10.1 compatibility: Both generations share the ST10 battery platform — same voltage rail, same connector pinout, and the same BMS handshake with Amazon's charge controller. OEM part numbers ST10, ST10A, 58-000119, and 26S1008 all cross to this cell.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a Kindle Fire HD 10 unit. The BMS accepted charge negotiation on the first cycle without tripping low-voltage lockout, and the fuel gauge IC tracked state-of-charge without error flags.
  • Post-swap fuel gauge reset: After installation, 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 display that commonly appears after a battery swap.

Kindle Fire HD 10 shutting down at 15–25% remaining

The Kindle Fire HD 10 drives a high-resolution display and maintains a WiFi connection simultaneously. Under that combined load, the battery voltage drops faster than the fuel gauge expects — especially with an aged or freshly swapped cell. The charge IC reads a voltage cliff and triggers a protective shutdown before the displayed percentage reaches zero. One full recalibration cycle — full discharge to shutoff, then a full uninterrupted charge — teaches the fuel gauge the new cell's voltage-to-capacity curve and typically resolves this.

Fast charging not available after battery replacement

Amazon's charge controller uses a proprietary negotiation sequence to enable fast charging on the Kindle Fire HD 10. A new cell starts the first cycle in a conservative trickle-charge state while the charge IC confirms cell impedance and BMS handshake. This is expected behaviour, not a fault. Fast charge typically becomes available after the first full accepted charge cycle — use the original Amazon power adapter and cable, not a third-party charger, to ensure the negotiation completes correctly.

Compatible Models

Kindle Fire HD 10 Kindle Fire HD 10.1 SR87CV B00VKIY9RG SR87MC

Replaces Part Numbers

ST10 58-000119 ST10A 26S1008

Technical Specifications

Voltage3.7V
Amp Hours3800mAh
Capacity3800mAh
Rate14.06Wh
Net Weight69.6g /2.46 oz
Gross Weight209.6g /7.39 oz
Approximate Weight209.6g /7.39 oz
Dimension 115.44 x 99.20 x 2.42mm

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 shows 80% battery right after a full charge — is the new battery faulty?

The fuel gauge IC was calibrated to the old cell's capacity curve and is now misreading the new one. This is a calibration issue, not a cell defect. Run the tablet down to automatic shutoff without interruption, then charge it uninterrupted to 100% using the original Amazon adapter. That single full cycle resets the fuel gauge against the new cell and the percentage display corrects itself.

My Kindle Fire HD 10 suddenly cuts off at around 20% after swapping the battery — what's causing that?

Under combined display and WiFi load, the battery voltage drops sharply at the lower end of the charge curve. The charge IC sees that voltage cliff and triggers a protective shutdown before the displayed percentage hits zero. The fuel gauge hasn't yet mapped the new cell's voltage-to-capacity profile. Run one complete discharge to automatic shutoff followed by an uninterrupted charge to 100% — this recalibrates the cutoff threshold to match the new cell.

The Kindle Fire HD 10 feels warm while charging after I replaced the battery — should I be concerned?

Mild warmth during the first few charge cycles is normal. The charge IC runs at a slightly higher current while it measures the new cell's internal impedance and establishes its charge profile. We observed the same behaviour on the bench — surface temperature stayed within normal operating range and dropped after the first full cycle completed. If the tablet becomes hot to the touch or the charge stops mid-cycle, disconnect immediately and check that the connector is fully seated.

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