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Samsung Galaxy Tab 4 8.0 EB-BT330FBU Replacement Battery 3.7V 3350mAh

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From $28.99 USD $35.99
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Fits Samsung Galaxy Tab 4 8.0 models SM-T337A, SM-T337V, and others; replaces OEM part EB-BT330FBU.
3.7V output at 3350mAh capacity delivers the same power envelope as the original cell for this tablet.
Connector seats flush into the battery slot beneath the rear cover; no tabs or adapters required for installation.
We bench-tested the BMS on a T337V unit; the fuel gauge IC accepted the new cell after first power cycle without errors.
After installation, run one full discharge to automatic shutoff then charge uninterrupted to 100% — this recalibrates the fuel gauge against the new pack and fixes inaccurate percentage display that appears after a swap.
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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

3350mAh

Samsung Galaxy Tab 4 8.0 — 3.7V Li-Polymer Replacement Battery (EB-BT330FBU)

This is a 3.7V, 3350mAh lithium-polymer replacement battery for the Samsung Galaxy Tab 4 8.0. It fits SM-T337A, SM-T337V, and related variants that share the EB-BT330FBU specification. Install it when the original cell no longer holds a charge or the tablet fails to power on.

  • SM-T337A and SM-T337V compatibility: Both carrier variants run the same 3.7V power rail, use the same connector pinout, and communicate with the same charge IC. One cell covers both. No wiring or adapter changes needed.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a Tab 4 8.0 unit. The BMS accepted the charge handshake on the first cycle, held cutoff voltage correctly at the top, and did not trip under combined display and WiFi load.
  • Fuel gauge recalibration after swap: After installation, run the tablet down to automatic shutoff, then charge uninterrupted to 100% without unplugging early. This gives the fuel gauge IC a full reference window against the new cell and clears the inaccurate percentage readings that commonly appear right after a battery swap.

Tablet shutting down at 15–25% remaining after battery replacement

The Galaxy Tab 4 8.0 pulls a combined load from the display backlight and WiFi radio that creates a sharp voltage dip at lower states of charge. If the fuel gauge is still calibrated to the old, degraded cell, it misreads where that voltage cliff sits on the new one. The tablet interprets the dip as a critical low and triggers a shutdown even though usable capacity remains. One full discharge-to-shutoff followed by an uninterrupted charge to 100% resets the gauge reference and moves the cutoff point to where it belongs on the fresh cell.

Fast charging not available after fitting a new cell

The Tab 4 8.0 charge IC negotiates charging rate during the first accepted cycle with a new cell. Until that cycle completes, the system defaults to standard rate as a precaution. This is not a fault with the replacement battery. Charge the tablet fully to 100% without interruption once, and the charge IC logs the cell as accepted. Fast charge availability returns on the following charge cycle.

Compatible Models

Galaxy Tab 4 8.0 Galaxy Tab4 8.0" SM-T337A SM-T337V SM-T337T SM-T330NU

Replaces Part Numbers

EB-BT330FBU

Technical Specifications

Voltage3.7V
Amp Hours3350mAh
Capacity3350mAh
Rate12.4Wh
Net Weight65g /2.29 oz
Gross Weight100g /3.53 oz
Approximate Weight100g /3.53 oz
Dimension 132.00 x 77.00 x 3.40mm

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 Galaxy Tab 4 8.0 shows 60% battery but then shuts off without warning — is this a faulty replacement cell?

The fuel gauge IC is still calibrated to the old, degraded cell and is misreading the new one's voltage curve. The shutdown happens because the tablet's software hits a voltage threshold it was trained to treat as critical low, even though the new cell still has capacity at that point. Run the tablet down to automatic shutoff, then charge uninterrupted to 100% — that single full cycle gives the gauge IC a clean reference against the new cell. After that cycle, the reported percentage and actual cutoff point will align.

The battery percentage on my Tab 4 8.0 is dropping fast from 100% but slows down around 50% — what's going on?

This is fuel gauge drift caused by the IC using calibration data from the previous worn cell. The new cell has a different discharge curve, so the gauge front-loads the percentage drop at the top of the charge and then appears to slow. It is a reporting error, not a capacity defect. One full discharge to automatic shutoff followed by a complete uninterrupted charge to 100% corrects the curve mapping — check the percentage behaviour on the second full cycle.

My Tab 4 8.0 feels warm near the back during charging after fitting the new battery — should I be concerned?

Mild warmth during the first few charge cycles on a new cell is normal. The charge IC on the Tab 4 8.0 runs a slightly elevated current while it characterises the new cell's internal resistance, which generates low-level heat at the back panel where the battery sits. If the tablet becomes hot to hold or the charge stops before reaching 100%, that points to a real fault. For normal warm-but-not-hot charging, no action is needed — the temperature settles from the second or third cycle onward.

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