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Samsung Galaxy Alpha EB-BG850BBE Replacement Battery 3.85V 1900mAh

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From $26.99 USD $33.99
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Fits Samsung Galaxy Alpha smartphones with original part number EB-BG850BBE, EB-BG850BBC, or EB-BG850BBU.
Delivers 3.85V and 1900mAh capacity — adequate for one full day of mixed use on the Galaxy Alpha before depletion.
Connector slides into the battery slot with standard Samsung orientation; locking tab seats flush against the frame edge.
We bench-tested the cell on a Galaxy Alpha SM-G850F — BMS accepted the new pack, fuel gauge IC began calibration cycle, no early cutoff.
On first full charge cycle, disable fast charging to let the coulomb counter recalibrate against the new cell's discharge curve before USB-PD resumes.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

3.85V

Amp

1900mAh

Samsung Galaxy Alpha SM-G850 Series — 3.85V Li-ion Replacement Battery (EB-BG850BBE)

This is a 1900mAh, 3.85V Li-ion replacement battery for the Samsung Galaxy Alpha, covering SM-G850, SM-G850F, SM-G850T, and related variants. It matches the OEM voltage, connector, and form factor of the original EB-BG850BBE cell. Swap it when the original no longer holds enough charge to get through a normal day.

  • SM-G850 series compatibility: All SM-G850 variants share the same battery bay dimensions, 3.85V rail, and BMS connector pinout. That is why one cell covers the full lineup — the charge IC and fuel gauge IC expect identical cell parameters across every regional SKU.
  • Bench tested on actual hardware: We ran this cell through a full charge-discharge cycle on an SM-G850F. The BMS accepted the cell without error flags, the charge IC ramped to full current normally, and the fuel gauge completed its first calibration pass without erratic jumps.
  • Fuel gauge recalibration on first use: On first use after installation, disable fast charging for one complete discharge-charge cycle. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell — preventing false percentage readings from the start.

Sudden shutdown at 20–30% on the Galaxy Alpha after a cell swap

The SM-G850 runs a Snapdragon 801 alongside an LTE modem — both pull hard simultaneously during calls or data bursts. A new cell with a slightly different internal resistance profile can hit a voltage dip under that combined load that the fuel gauge reads as a cliff-edge, triggering an emergency shutdown even though the displayed percentage looks safe. This is not a defective cell — it is the fuel gauge IC still calibrated to the old cell's discharge curve. Run one full discharge to below 5% and a full charge to 100% without interruption. After that cycle, the coulomb counter recalibrates and the shutdowns stop.

Phone will not power on after the replacement battery sat in storage

Li-ion cells self-discharge in storage, and if the cell drops below approximately 2.5V the BMS locks out to prevent damage — the phone shows nothing when you press power. Connect the original Samsung charger and leave it for 15–20 minutes before attempting to power on; the charge IC needs to trickle current into the cell to bring it above the BMS re-enable threshold. Do not use a fast charger for this recovery step — high current into a deeply discharged cell can trip the BMS again. Once the phone shows a charge indicator, let it reach at least 15% before booting.

Compatible Models

Galaxy Alpha SM-G850 SM-G850F SM-G850T SM-S801 SM-G8508 SM-G8508S SM-G8509v SM-G850A Galaxy Alpha LTE-A

Replaces Part Numbers

EB-BG850BBE EB-BG850BBC EB-BG850BBU

Technical Specifications

Voltage3.85V
Amp Hours1900mAh
Capacity1900mAh
Rate7.32Wh
Net Weight32.5g /1.15 oz
Gross Weight68g /2.40 oz
Approximate Weight68g /2.40 oz
Dimension 96.06 x 38.80 x 4.64mm

Product Highlights

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

Frequently Asked Questions

My Galaxy Alpha shuts off at around 25% after I put in the new battery — is the cell bad?

The cell is almost certainly fine. The fuel gauge IC in the SM-G850 is still using the discharge curve it mapped to the old cell, so it misreads the voltage cliff on the new one and cuts power early. Run one uninterrupted full discharge down to automatic shutdown, then charge to 100% without unplugging early. After that single calibration cycle, the coulomb counter resets to the new cell's curve and the early shutdowns stop.

Fast charging stopped working after I replaced the battery on my Galaxy Alpha — why?

On the first cycle after a cell swap, the charge IC sometimes defaults to standard charge rates while it handshakes with the new BMS. This is normal behaviour — it is not a hardware fault. Charge the phone fully once at the standard rate, let it discharge below 20%, then charge again. The proprietary charge protocol typically re-engages on the second cycle once the BMS has completed its initialisation handshake with the charge IC.

The battery percentage on my Galaxy Alpha jumps around erratically — it reads 60%, drops to 40%, then jumps back up.

Erratic percentage jumps on the SM-G850 almost always mean the fuel gauge IC is recalibrating against a new cell it has never seen before. The coulomb counter accumulated error from the degraded original cell and is now interpolating incorrectly against the new cell's discharge curve. Do not interrupt the next charge cycle — let it run from whatever percentage it shows all the way to 100% and hold there for five minutes. One complete uninterrupted charge cycle resets the fuel gauge reference points and the jumping stops.

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