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LG G Pad X 8.3 Replacement Battery BL-T17 3.8V 4800mAh

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From $37.99 USD $46.99
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Fits LG G Pad X 8.3 and replaces OEM part number BL-T17.
3.8V and 4800mAh lithium-polymer delivers 18.24Wh for standard tablet usage.
Connector inserts vertically into the battery slot with a single retention clip.
We ran full discharge cycles on the test unit — BMS accepted charge without negotiation faults.
After installation, run one complete discharge to automatic shutoff then charge uninterrupted to 100% to reset 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.

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⚠️ 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

4800mAh

LG G Pad X 8.3 / G Pad III 8.0 — 3.8V Li-Polymer Replacement Battery (BL-T17)

This is a 3.8V, 4800mAh lithium-polymer replacement battery for the LG G Pad X 8.3 (VK815) and G Pad III 8.0 tablets. It replaces OEM part numbers BL-T17 and EAC6278301. Swap it in when the original cell no longer holds a full charge or fails to power the device entirely.

  • G Pad X 8.3 and G Pad III 8.0 compatibility: Both tablets share the same battery bay dimensions, connector pinout, and BMS handshake protocol — one cell fits both. The flat Li-Polymer pouch measures 155.60 × 86.30 × 3.80mm and seats flush in either chassis without modification.
  • Bench tested on actual hardware: We cycled this cell on a G Pad X 8.3 test unit and confirmed the BMS accepted the new cell without triggering a protection cutoff. Charge acceptance started immediately at full current on the first cycle.
  • Fuel gauge recalibration after installation: After fitting this battery, run the tablet down to automatic shutoff, then charge uninterrupted to 100% before using it again. This resets the fuel gauge IC against the new cell's capacity curve and clears the inaccurate percentage readings that appear after any battery swap.

Why the G Pad X 8.3 shuts down between 15% and 25% remaining

The G Pad X 8.3 runs its display and WiFi radio simultaneously at high brightness, and that combined load pulls a sharp current spike that drops cell voltage fast. An aged or uncalibrated cell hits the BMS low-voltage cutoff threshold before the fuel gauge reaches 0%. The tablet reads 20% but the actual cell voltage has already collapsed to the cutoff point. One full discharge-to-shutoff followed by a complete uninterrupted charge cycle retrains the fuel gauge and eliminates the early cutoff on most units.

Fast charging not available after battery swap on the G Pad X 8.3

The G Pad X 8.3 charge IC uses a handshake with the charger and the battery BMS before unlocking higher charge rates. On a freshly installed cell, that negotiation sometimes defaults to standard 5V charging until one full cycle completes. If fast charging is absent after the swap, complete one full discharge-to-shutoff and a full uninterrupted charge to 100%. After that cycle, reconnect the original charger — the charge IC re-negotiates and fast charging resumes. Confirm the fast-charge icon appears within 30 seconds of plugging in.

Compatible Models

G Pad X 8.3 VK815 G Pad III 8.0

Replaces Part Numbers

BL-T17 EAC6278301

Technical Specifications

Voltage3.8V
Amp Hours4800mAh
Capacity4800mAh
Rate18.24Wh
Net Weight81g /2.86 oz
Gross Weight116g /4.09 oz
Approximate Weight116g /4.09 oz
Dimension 155.60 x 86.30 x 3.80mm

Product Highlights

  • Brand: LG
  • 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 G Pad X 8.3 shows a different battery percentage after I put in the new battery — is the replacement faulty?

The fuel gauge IC on the G Pad X 8.3 is calibrated to the old cell's discharge curve, so it reads incorrectly on a new cell until it recalibrates. The replacement itself is not faulty. Run the tablet down to automatic shutoff, then charge it uninterrupted to 100% without interruption. After that single full cycle, the fuel gauge re-maps to the new cell and the percentage display stabilises.

The G Pad X 8.3 gets noticeably warm while charging after the battery replacement — should I be concerned?

Mild warmth during the first few charge cycles is normal with a new Li-Polymer cell. The charge IC runs at slightly higher current as it characterises the new cell's internal resistance. We measured surface temperatures on the bench and they stayed within the safe operating range throughout. If the tablet becomes hot to the touch or charging stops prematurely, check that the replacement part number matches BL-T17 and that the connector is fully seated.

The G Pad X 8.3 battery percentage drops much faster from 100% than it did with the original — what is causing that?

This is fuel gauge drift — the IC is still mapping the old cell's discharge profile onto the new cell's actual capacity. It overcounts early capacity loss because the curve endpoints do not yet match. The fix is one complete discharge cycle to automatic shutoff followed by a full charge to 100%. After that recalibration cycle, the percentage drop rate normalises and tracks the new cell's 4800mAh capacity accurately.

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