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Samsung EB424255VA Replacement Battery 3.7V 900mAh Li-ion

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From $22.99 USD $28.99
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Fits Samsung SPH-M330, SPH-M340, SPH-M350 and replaces EB424255VA battery pack.
Rated 3.7V at 900mAh, supplies 3.33Wh to handle voice calls and standby cycles.
Uses standard Li-ion connector with flat positive terminal, seats flush against rear casing.
We bench-tested the cell on a 2G discharge cycle; BMS accepted input without fault codes.
On first power-on after installation, allow one full discharge-to-charge cycle before heavy use to let the fuel gauge IC recalibrate its capacity estimate against the new cell's 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

3.7V

Amp

900mAh

Samsung SPH-M330 / SPH-M350 Series — 3.7V Li-ion Replacement Battery (EB424255VA)

This is a 3.7V, 900mAh Li-ion cell built to fit the Samsung SPH-M330, SPH-M340, SPH-M350, and Seek SPH-M350, along with over 60 compatible handsets sharing the same battery bay. It replaces OEM part numbers EB424255VA, EB424255VU, EB424255VABSTD, and EB424255VUCSTD. If your original cell no longer holds a charge through a normal day, this is a direct swap.

  • SPH-M330 / M340 / M350 platform fit: These handsets share the same battery connector pinout and BMS handshake protocol across the series. The cell dimensions — 54.72 x 41.80 x 4.50mm — match the battery bay exactly, and the protection circuit communicates correctly with the charge IC on each supported model.
  • Bench tested on actual hardware: We ran this cell through full charge-discharge cycles on compatible handsets. The BMS engaged cutoff correctly at low-voltage thresholds and accepted charge current without triggering fault states on the device charge IC.
  • Fuel gauge recalibration on first install: After fitting this cell, run one complete discharge down to automatic shutdown, then charge uninterrupted to 100% before using the phone normally. The SPH-M330's fuel gauge IC is calibrated to the old cell's discharge curve — skipping this step causes erratic percentage readings from the first charge onward.

Why the SPH-M330 reports wrong battery percentage after a cell swap

The fuel gauge IC on these Samsung handsets uses a coulomb counter that tracks charge in and out of the original cell. When you install a new cell, the counter's stored reference curve no longer matches the actual discharge profile of the replacement. The IC continues using stale calibration data, so the percentage display drifts — often reading 40% when the cell is nearly depleted. One full discharge-to-shutdown followed by an uninterrupted charge to 4.2V resets the reference and brings the gauge back into alignment.

Sudden shutdown at 20–30% on the replacement cell

This is a voltage cliff issue, not a capacity problem. Under screen or radio load, the cell voltage drops sharply — faster than the fuel gauge can track — and the BMS cuts power before the display percentage reaches zero. It happens most often in the first few cycles on a new cell before the coulomb counter has accurate data. Run two full discharge-charge cycles and the shutdowns typically stop. If they continue after two cycles, check that the battery contacts are clean and seating flat — poor contact increases internal resistance and accelerates the voltage drop under load.

Compatible Models

SPH-M330 SPH-M340 SPH-M350 Seek SPH-M350 SPH-M550 SPH-M630 Exclaim SPH-M550 Highnote SPH-M630 Sunburst A697 SCH-R561 Messager R450 Messager II R560 Rant M540 SGH-A927 Flight II Gravity 3 SGH-T479 Gravity Touch SGH-T669 Messager Touch SCH-R630 SGH-T359 Evergreen A667 Solstice II A817 Flight II A927 Seek M350 Messager Touch R630 Gravity 3 T479 Touch T669 GT-C5530 Solstice II Trender SPH-M380 Evergreen SGH-A667 SGH-T369 SGH-A817 Gravity TXT SGH-T379 SCH-R380 Comment R380 GT-S3350 Chat 335 Smiley M359 SCH-R631 Trender M380 Freeform III R380 Character R640 SGH-749 Corby II GT-S3850 SCH-R640 Smiley T669 Gravity T479 Gravity T359 GT-S5220 GT-S5222 Tocco Lite 2 Star 3 Star 3 Duos Ch SCH-R390 Freeform 4 Messager SCH-R450

Replaces Part Numbers

EB424255VA EB424255VABSTD EB424255VUCSTD EB424255VU

Technical Specifications

Voltage3.7V
Amp Hours900mAh
Capacity900mAh
Rate3.33Wh
Net Weight19g /0.67 oz
Gross Weight44g /1.55 oz
Approximate Weight44g /1.55 oz
Dimension 54.72 x 41.80 x 4.50mm

Product Highlights

  • Brand: Samsung
  • 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

My SPH-M330 won't turn on at all after the replacement battery sat in a drawer for months — is it dead?

Almost certainly not dead — the BMS has tripped into lockout because the cell discharged below 2.5V in storage. Plug the phone into a wall charger and leave it for 30–45 minutes without pressing any buttons. The charge IC will trickle current into the cell until voltage rises above the BMS recovery threshold, at which point the phone will boot normally. If nothing happens after an hour, try a different charging cable before assuming the cell is faulty.

The phone shows 100% immediately after I plug in the charger, then drops to 60% the moment I unplug — what's happening?

The fuel gauge IC is reading voltage at rest and mapping it incorrectly to a full-charge state because it hasn't completed a calibration cycle on the new cell. Voltage at the charge IC terminal reads 4.2V when charging completes, which the uncalibrated counter interprets as 100%, but the open-circuit voltage under load tells a different story. Do one full discharge to automatic shutdown, then charge to 100% without interruption — the coulomb counter recalibrates against real discharge data and the percentage stabilises. One cycle is usually enough.

Fast charging stopped working after I put in this new battery — my charger used to charge the phone quickly but now it's slow.

The charge IC on SPH-M330 series handsets negotiates charge current based on the BMS response from the cell. On the first cycle with a new cell, the IC defaults to a low trickle rate until it confirms the cell's internal resistance and temperature profile are within expected limits. This is normal behaviour — it is not a fault with the replacement battery or the charger. Complete one full charge at the slow rate, then disconnect and reconnect the charger. On the second cycle, the IC accepts the higher current rate and fast charging resumes.

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