BL-T3 LG Optimus Vu Replacement Battery 3.7V 2000mAh
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BL-T3 LG Optimus Vu Replacement Battery 3.7V 2000mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
⚠️ 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.
BL-T3 LG Optimus Vu Replacement Battery 3.7V 2000mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
2000mAh
LG Optimus Vu / F100 Series — 3.7V Li-Polymer Replacement Battery (BL-T3)
This is a 3.7V, 2000mAh lithium-polymer battery for the LG Optimus Vu and F100 series tablets, including the F100L and F100S. It replaces OEM part numbers BL-T3, EAC61798901, and EAC61798903. If your original battery no longer holds charge or the tablet shuts down unexpectedly, this is a direct electrical match.
- F100L, F100S, and Optimus Vu compatibility: These models share the same battery footprint, voltage rail, and connector pinout. The BL-T3 spec — 3.7V nominal, 4.2V charge ceiling — is consistent across the entire F100 platform, so one cell covers all variants.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the Optimus Vu. The BMS accepted charge from a standard 5V USB source without fault flags, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
- Post-installation fuel gauge reset: After fitting this battery, run the tablet down to automatic shutoff, then charge it uninterrupted to 100% before using it again. The Optimus Vu's fuel gauge IC calibrates against this full cycle — skipping it causes the percentage display to read inaccurately from day one.
Optimus Vu shutting down between 15–25% remaining
This happens because the fuel gauge IC is still calibrated to the old cell's voltage curve. When the display and Wi-Fi radio draw current simultaneously, the new cell's voltage briefly dips below the threshold the IC expects at that state of charge. The tablet interprets this as critically low and cuts power. One complete discharge-to-shutoff cycle followed by a full charge corrects the IC's reference point and eliminates premature shutdowns.
Battery percentage jumping or dropping faster than expected from 100%
Fuel gauge drift is common after any battery swap — the IC learned its accuracy map from the original cell and that data no longer matches the replacement. The reported percentage can fall several points faster than actual capacity in the first few charge cycles. Run one full discharge to automatic shutoff, then charge uninterrupted to 4.2V (100%). Most users see stable, accurate readings within two cycles after that.
Compatible Models
Replaces Part Numbers
Technical Specifications
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 Optimus Vu shows the right percentage on the new battery but randomly shuts off mid-use — what's causing it?
The fuel gauge IC hasn't recalibrated to the new cell's voltage curve yet. Under combined screen and Wi-Fi load, voltage briefly sags past the shutdown threshold even when the reported percentage looks fine. Discharge the tablet fully until it powers off on its own, then charge it straight to 100% without interrupting. That single full cycle resets the IC's reference and stops the unexpected cutoffs.
Fast charging stopped working after I swapped the battery — the tablet now charges slowly on the same charger I always used.
The charge controller needs at least one completed charge cycle on the new cell before it re-negotiates the higher current input. Plug in your original charger and let it run to 100% without unplugging early. After that first accepted cycle, the controller re-enables the faster charge rate — most users see it restored on the second charge.
The tablet feels warm near the battery compartment while charging the new BL-T3 — is that normal?
Yes. A new lithium-polymer cell has slightly higher internal resistance on its first few cycles, which generates a small amount of heat during charging. That warmth should stay mild and even — not hot or concentrated in one spot. If the device becomes hot to the touch or the charge stops before 100%, disconnect immediately and check that the connector is seated flush against the battery contacts.
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