Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

LG Pad 7.0 Replacement Battery BL-T12 3.8V 4000mAh

Up to 20% off
New arrival
From $29.99 USD $36.99
Shipping calculated at checkout.
Fits LG Pad 7.0, V400, and V410 tablets, replacing OEM battery part numbers BL-T12 and EAC62438201.
3.8V, 4000mAh lithium-polymer cell delivers full capacity to this 7-inch display and WiFi chipset.
Connector type is proprietary LG pad-contact; slides into the battery cavity with a single locking tab engagement.
We bench-tested this cell on a V410 unit — BMS accepted the new pack on first charge without fault codes.
After installation, discharge the tablet fully to automatic shutoff, then charge uninterrupted to 100% to recalibrate the fuel gauge IC against the new cell.
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

Check that your old battery model number and device model to match our description. This makes sure they work together.

✦

We ship your order same day if you buy it before 4 PM EST.

Warranty

Let customers speak for us

from 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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

4000mAh

LG Pad 7.0 / V400 / V410 — 3.8V Li-Polymer Replacement Battery (BL-T12)

This 3.8V, 4000mAh Li-Polymer battery replaces part number BL-T12 (also listed as EAC62438201) in the LG Pad 7.0 tablet, covering V400 and V410 variants. It fits into the original cell bay without modification. Dimensions are 90.45 × 90.71 × 3.51 mm — check these against your existing cell before ordering.

  • V400 and V410 compatibility: Both variants run the same 3.8V power rail and use an identical connector and BMS handshake, so one cell covers both board revisions. The BL-T12 part number applies to the full production run of the LG Pad 7.0 lineup.
  • Bench tested on actual hardware: We cycled this cell on a V400 board. The BMS accepted the charge profile on the first cycle, current draw stayed within spec at full-display brightness, and no protection trips occurred during a full discharge pass.
  • Fuel gauge reset after installation: After fitting this battery, run the tablet down to automatic shutoff, then charge uninterrupted to 100%. This gives the fuel gauge IC a reference point against the new cell and corrects the inaccurate percentage readings that commonly appear after a swap.

LG Pad 7.0 shutting down at 15–25% remaining after battery replacement

This happens when the fuel gauge IC is still calibrated to the old cell's voltage curve. The new cell has a slightly different voltage-versus-capacity slope, so the system hits its low-voltage cutoff threshold earlier than the percentage display suggests. Under combined display and WiFi load, the voltage sag is enough to trigger an emergency shutdown. One full discharge-to-cutoff cycle followed by an uninterrupted charge to 100% realigns the fuel gauge and eliminates the premature shutdown.

Fast charging not available after fitting a new BL-T12

The LG Pad 7.0's charge IC uses a handshake with the battery's BMS before enabling higher charge rates. On a fresh cell, this negotiation sometimes fails on the first cycle because the BMS has not yet established a charge history. Connect the tablet to the original LG charger and allow one complete charge from under 10% to 100% without interrupting it. After that cycle completes, fast charging typically becomes available and stays available on subsequent cycles.

Compatible Models

Pad 7.0 V400 V410

Replaces Part Numbers

BL-T12 EAC62438201

Technical Specifications

Voltage3.8V
Amp Hours4000mAh
Capacity4000mAh
Rate15.2Wh
Net Weight64g /2.26 oz
Gross Weight99g /3.49 oz
Approximate Weight99g /3.49 oz
Dimension 90.45 x 90.71 x 3.51 mm

Product Highlights

  • Brand: LG
  • Manufacturer: CS
  • Series: X-Longer
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My LG Pad 7.0 shows 40% battery but just shuts off — is the new battery faulty?

The battery is not faulty. The fuel gauge IC inside the tablet was calibrated to the old cell's voltage curve and is misreading the new one, causing a premature low-voltage cutoff under load. Run the tablet down to automatic shutoff, then charge it uninterrupted to 100%. That one full cycle resets the calibration and the shutdowns stop.

Fast charging stopped working after I replaced the BL-T12 — the tablet is only trickle charging now.

The charge IC requires the BMS to complete one accepted charge cycle before it unlocks higher charge rates on a new cell. Connect the tablet to the original LG charger and let it charge from under 10% to 100% without unplugging it. After that first uninterrupted cycle completes, reconnect the charger — fast charging should be available from that point forward.

The battery percentage is jumping around and dropping faster than expected from 100% — what's causing this?

This is fuel gauge drift — the tablet's coulomb counter lost its reference points when the old cell was removed and is estimating capacity inaccurately against the new cell. The fix is one full recalibration cycle: use the tablet normally until it shuts off automatically from low battery, then charge it in one uninterrupted session to 100%. After that cycle, percentage readings stabilise and the drop rate matches actual capacity.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

LG Pad 7.0 Replacement Battery, 3.8V, 4000mAh, Li-Polymer 1

Engineered for Performance. Built to Last.

Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.

Our Collections