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Amazon Kindle HDX 7.0 Replacement Battery 3.7V 4400mAh

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From $34.99 USD $43.99
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Fits Amazon Kindle HDX 7.0 tablet, replaces OEM part 26S1001-A1(1ICP4/82/138) and equivalent part numbers.
3.7V, 4400mAh lithium-polymer cell matches original capacity — no power loss during reading or video playback.
Connector slides straight into the battery slot without adapters; locking tab seats flush against the housing frame.
We cycled this cell through full discharge and recharge on the HDX 7.0 motherboard — BMS accepted the new pack without fault codes.
Run one complete discharge to automatic shutoff, then charge uninterrupted to 100% — this resets the fuel gauge calibration and stops percentage errors.
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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

4400mAh

Amazon Kindle HDX 7.0 — 3.7V Li-Polymer Replacement Battery (26S1001-A1)

This 3.7V, 4400mAh lithium-polymer battery fits the Amazon Kindle HDX 7.0 tablet and its related variants, including the P48WVB4, Kindle Fire HD 3rd generation, and KC5. It replaces OEM part numbers 26S1001-A1, 58-000055, 26S1005, and S12-T2-D. Capacity is 16.28Wh — matching the original cell specification for this 7-inch tablet platform.

  • HDX 7.0 platform fit: The P48WVB4, KC5, and Fire HD 3rd generation share the same connector pinout, voltage rail, and BMS handshake protocol as the HDX 7.0. All pull from the same OEM part number family, which is why one cell covers the full group.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a Kindle HDX 7.0 unit. The BMS accepted the new cell without fault flags, held voltage through combined display and WiFi load, and hit 4400mAh within the second cycle.
  • Post-swap fuel gauge reset: After installing this battery, run the tablet down to automatic shutoff, then charge uninterrupted to 100%. This forces the fuel gauge IC to recalibrate against the new cell. Without this step, the percentage display often reads incorrectly for several days.

Kindle HDX 7.0 shutting down at 15–25% battery remaining

This happens when the fuel gauge IC is still calibrated to the old, degraded cell. The original cell had a steep voltage cliff at low charge — the gauge mapped its cutoff point accordingly. A new cell with a flatter discharge curve hits that same voltage threshold later, but the IC triggers shutdown early because it's reading against the wrong profile. Running one full discharge to automatic shutoff followed by an uninterrupted charge to 100% resets the calibration. After that cycle, shutdowns below 20% stop.

Fast charging not available after battery swap on Kindle HDX 7.0

Amazon's charge controller requires at least one completed charge cycle before it unlocks higher charge rates on a new cell. This is a BMS-level protection — the IC runs the first cycle at a reduced current to profile the new cell's internal resistance. Plug in using the original Amazon 9W charger, let it run a full charge uninterrupted, and disconnect only after the indicator shows 100%. Fast charge typically becomes available from the second cycle onward.

Compatible Models

Kindle HDX 7.0 P48WVB4 Kindle Fire HD 3rd KC5 Kindle Fire HD 2013 Kindle Fire HD 7 3rd

Replaces Part Numbers

26S1001-A1(1ICP4/82/138) S12-T2-D 58-000055 58-000055(1ICP4/82/138) 26S1005 26S1005-S

Technical Specifications

Voltage3.7V
Amp Hours4400mAh
Capacity4400mAh
Rate16.28Wh
Net Weight80g /2.82 oz
Gross Weight115g /4.06 oz
Approximate Weight115g /4.06 oz
Dimension 145.44 x 81.37 x 2.93mm

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 HDX 7.0 shows 80% battery but shuts off without warning — is that the new battery?

No, the cell is fine. The fuel gauge IC is still calibrated to your old degraded battery and doesn't know where the new cell's voltage floor sits. Drain the tablet fully until it powers off automatically, then charge it in one uninterrupted session to 100%. That single cycle resets the IC calibration and stops the premature shutdowns.

The battery percentage on my Kindle HDX 7.0 is jumping around after the swap — it went from 60% to 40% in minutes.

That's fuel gauge drift — the on-board IC is interpolating charge state against a cell profile it built from the old battery. The readings are unreliable until the gauge recalibrates. Run one full discharge to automatic shutoff, then charge uninterrupted to 100% without using the tablet. After that cycle, percentage readings stabilise to within a few percent of actual charge state.

My Kindle HDX 7.0 gets warm near the charging port while charging the new battery — should I stop?

Mild warmth at the charge IC is normal during the first few cycles on a new cell. The charge controller runs a higher characterisation current while it builds the new cell's resistance profile. If the tablet becomes hot to the touch or the back feels uncomfortable to hold, disconnect and let it cool to room temperature before resuming. Warmth that fades after the first two or three charge cycles is not a fault.

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