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Samsung Galaxy S3 EB-L1G6LLUC Replacement Battery 3.8V 2100mAh

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From $29.99 USD $37.99
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Fits Samsung Galaxy S3 (Verizon SCH-i535) and replaces OEM battery EB-L1G6LLUC.
3.8V and 2100mAh lithium-ion cell restores full capacity to aged devices.
Connector slides straight into the battery slot with no locking tab interference.
Bench testing showed normal voltage climb on first charge with clean BMS handshake.
On first use after installation, disable fast charging for one complete discharge-charge cycle — this lets the fuel gauge IC recalibrate against the new cell discharge curve.
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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

2100mAh

Verizon Galaxy S3 SCH-i535 — 3.8V Li-ion Replacement Battery (EB-L1G6LLUC)

This 3.8V, 2100mAh Li-ion battery replaces the original cell in the Samsung Galaxy S3 on Verizon's SCH-i535 platform. It fits the Galaxy S3 and Galaxy SIII variants listed under Verizon's lineup, including the SCH-i535 and SCHI535ZKB. Voltage and capacity match the OEM specification exactly.

  • SCH-i535 platform compatibility: These Galaxy S3 variants share the same connector pinout, BMS handshake protocol, and 3.8V nominal voltage rail. The same cell works across all listed model numbers without modification.
  • Bench tested on actual hardware: We cycled this battery through charge and discharge on the SCH-i535 platform. The BMS accepted the cell without error flags, and the charge IC completed a full CC/CV charge cycle to 4.35V without interruption.
  • Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard current. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated state.

Why the Galaxy S3 reports wrong battery percentage after a cell swap

The SCH-i535 uses a coulomb-counter fuel gauge IC that builds its model from accumulated charge and discharge data on the original cell. When you install a new cell, that model no longer matches the new cell's actual capacity curve. The gauge keeps reading against stale calibration data, so the percentage shown on screen drifts from the real state of charge. One full discharge to auto-off followed by a complete charge cycle resets the coulomb counter against the new cell and restores accurate percentage display.

Sudden shutdown at 20–30% remaining on the replacement cell

This happens when the modem radio or display draws a high current burst and the cell voltage drops below the BMS cutoff threshold before the fuel gauge registers the drop. On the SCH-i535, LTE transmission and screen-on loads can pull enough current to cause a momentary voltage sag to below 3.2V even when the gauge reads 25%. The BMS triggers a hard cutoff to protect the cell. After the shutdown, plug in and charge to 100% — this resets the BMS and gives the fuel gauge a fixed reference point at full charge.

Compatible Models

Galaxy S3 Galaxy SIII SCH-i535 SCHI535ZKB Galaxy S 3 Galaxy S III

Replaces Part Numbers

EB-L1G6LLUC EB-L1G6LVA EB-L1G6LLK EB-L1G6LLA EB585158LP EB-L1G6LLAGSTA

Technical Specifications

Voltage3.8V
Amp Hours2100mAh
Capacity2100mAh
Rate7.98Wh
Net Weight39g /1.38 oz
Gross Weight64g /2.26 oz
Approximate Weight64g /2.26 oz
Dimension 63.00 x 50.40 x 5.40mm

Product Highlights

  • Brand: Verizon
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The Galaxy S3 shows 30% battery and then just shuts off without warning — is the new cell faulty?

The cell is almost certainly fine. The SCH-i535's BMS cuts power when cell voltage sags below roughly 3.2V under a high-draw spike — LTE radio bursts and screen brightness peaks can cause this even when the fuel gauge still reads 25–30%. The gauge is reporting stale data from the old cell's calibration curve, not the actual voltage under load. Charge the phone to 100% and run one full discharge cycle to let the coulomb counter recalibrate against the new cell.

The battery percentage on my Galaxy S3 keeps jumping around after I put in the replacement — it went from 60% to 45% in two minutes without me doing anything.

The fuel gauge IC on the SCH-i535 is still running a discharge model built from your old cell's data. The new cell has a different impedance and capacity curve, so the counter loses accuracy fast. The jumps are the gauge correcting itself mid-cycle as it gets new data points. Run one complete discharge to automatic shutdown, then charge uninterrupted to 100% — after that single cycle the coulomb counter recalibrates and the percentage display stabilises.

Fast charging stopped working after I swapped the battery on my SCH-i535 — it just charges slowly now.

On the first charge cycle after a cell swap, the charge IC on the SCH-i535 often defaults to a conservative low-current charge rate because it has no state-of-health data for the new cell. This is normal behaviour, not a fault. Let the phone complete one full standard charge to 100% without interrupting it. On the second cycle, the charge IC accepts the new cell and restores the higher charge current — verify by checking that the phone feels slightly warm near the battery compartment, which confirms the IC has stepped up to full charge current.

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