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Samsung Galaxy Tab S4 10.5 Replacement Battery EB-BT835ABU

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From $39.99 USD $49.99
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Fits Samsung Galaxy Tab S4 SM-T830 and replaces OEM battery EB-BT835ABU, EB-BT835ABE, GH43-04830A.
This 3.8V 7300mAh Li-Polymer cell restores full charge capacity to the 10.5-inch tablet after degradation.
Connector sits flat against the motherboard with a single pull-tab locking mechanism; orientation is keyed.
We charged this pack through two full cycles on the Samsung tablet platform; BMS accepted without fault codes.
After installation, run one full discharge to automatic shutoff then charge uninterrupted to 100% — this recalibrates the fuel gauge IC against the new cell and fixes the inaccurate percentage display.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

7300mAh

Samsung Galaxy Tab S4 10.5 — 3.8V Li-Polymer Replacement Battery (EB-BT835ABU)

This 3.8V, 7300mAh Li-Polymer cell replaces the original EB-BT835ABU battery in the Samsung Galaxy Tab S4 10.5. It fits the SM-T830 and SM-T835 variants, including the 2018 TD-LTE model. Swap it when your Tab S4 drains unusually fast, fails to charge past a certain percentage, or shuts down unexpectedly under load.

  • SM-T830 and SM-T835 compatibility: Both Wi-Fi and LTE variants of the Tab S4 10.5 use the same battery bay dimensions, connector pinout, and BMS handshake protocol — the EB-BT835ABU fits both without modification.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on SM-T830 hardware. The BMS accepted the cell on first contact, reported capacity correctly after one recalibration cycle, and held voltage within the expected 3.6–4.35V window throughout.
  • Fuel gauge recalibration after swap: After installation, run one full discharge to automatic shutoff, then charge uninterrupted to 100%. This resets the fuel gauge IC against the new cell's actual capacity curve and clears the inaccurate percentage readings that typically appear right after a battery swap.

Tab S4 shutting down at 15–25% remaining

This happens because the display backlight and active Wi-Fi together draw enough current to cause a sharp voltage sag in a degraded or freshly installed cell. The BMS reads the voltage drop as a low-battery cutoff event and trips before the fuel gauge percentage catches up. On a new cell, this resolves after one full recalibration cycle — discharge to automatic shutoff, then charge to 100% uninterrupted. If shutdowns persist past two full cycles, check that the battery connector is fully seated and that no pins are bent.

Fast charging not available on the Tab S4 after a battery swap

The Tab S4 uses Samsung's Adaptive Fast Charging protocol, which requires the charge IC to complete at least one accepted charge cycle before negotiating higher wattage. After a battery swap, the tablet often defaults to standard 5V charging on the first cycle. Plug in with the original Samsung charger and cable — third-party cables frequently lack the wiring needed for the handshake. Once one full charge cycle completes, the fast charge indicator should reappear in the notification shade on the next plug-in.

Compatible Models

SM-T830 SM-T835 Galaxy Tab S4 10.5 2018 Galaxy Tab S4 10.5 2018 TD-LTE Galaxy Tab S4 10.5 LTE

Replaces Part Numbers

EB-BT835ABU EB-BT835ABE GH43-04830A

Technical Specifications

Voltage3.8V
Amp Hours7300mAh
Capacity7300mAh
Rate27.74Wh
Net Weight113.2g /3.99 oz
Gross Weight253.2g /8.93 oz
Approximate Weight253.2g /8.93 oz
Dimension 171.62 x 106.62 x 3.50mm

Product Highlights

  • Brand: Samsung
  • 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 Tab S4 shows 80% battery right after a full charge — why is the percentage wrong after fitting a new battery?

The fuel gauge IC on the Tab S4 is calibrated to the old cell's voltage curve, so it misreads the new cell from the start. Run one complete cycle: discharge the tablet to automatic shutoff, then charge uninterrupted to 100% without using the device. That single cycle gives the IC enough data to recalibrate against the new cell. After that, percentage accuracy returns to normal.

The Tab S4 feels warm near the back during charging after the battery replacement — is the charge IC overheating?

Mild warmth near the battery bay is normal during the first few charge cycles on a new cell. The charge IC on the SM-T830 regulates current more actively while it builds a profile for the new cell, which generates slightly more heat than steady-state charging on a broken-in battery. If the tablet is hot to the touch or triggers a temperature warning on screen, disconnect and check that the battery connector is fully seated with no lifted pins. Surface warmth that fades after a few cycles needs no action.

Battery percentage drops noticeably faster between 100% and 70% than it did on the original cell — is the capacity actually lower?

This is fuel gauge drift, not a capacity shortfall. The IC's discharge curve model is still calibrated to the old cell, so it burns through the top portion of the reported percentage faster than the actual charge level warrants. Run two full discharge-to-shutoff and charge-to-100% cycles without interrupting either. By the end of the second cycle, the IC recalculates its curve against the new cell's actual behaviour and the percentage drop rate normalises across the full range.

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Samsung SM-T830 Replacement Battery, 3.8V, 7300mAh, Li-Polymer 1

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