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B150AE Samsung Galaxy Ace 2 Replacement Battery 3.8V 1800mAh

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From $28.99 USD $35.99
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Fits Samsung GT-I8260 Galaxy Ace 2; replaces OEM battery B150AE.
3.8V, 1800mAh lithium-ion cell restores full charge capacity on this entry-level smartphone.
Connector slides straight into the battery slot; no locking tab, simple friction fit.
Bench test showed normal fuel gauge response and stable voltage under typical phone load.
On first charge after installation, complete one full discharge-charge cycle before relying on the percentage display — the fuel gauge IC needs one cycle to recalibrate against this 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

3.8V

Amp

1800mAh

Samsung GT-I8260 / GT-I8262 Galaxy Core — 3.8V Li-ion Replacement Battery (B150AE)

This is a 3.8V, 1800mAh Li-ion replacement battery for the Samsung Galaxy Core and Galaxy Core Duos series, including the GT-I8260 and GT-I8262. It carries OEM part numbers B150AE, B150AC, B185BE, B185BC, and GH43-03849A. The cell slots directly into the existing battery bay and connects through the same three-contact BMS interface as the original.

  • Galaxy Core and Core Duos compatibility: The GT-I8260 and GT-I8262 share the same battery bay geometry, contact pitch, and BMS handshake protocol. Both models read cell state through the same fuel gauge IC, so this battery communicates charge data correctly across both variants.
  • Bench tested on actual hardware: We cycled this cell in a GT-I8262 and monitored BMS cutoff behaviour at both the low-voltage floor (2.5V per cell) and the charge termination point. The protection circuit triggers cleanly at both thresholds with no false cutoffs during normal screen-on load.
  • Fuel gauge recalibration on first cycle: On first use after installation, disable fast charging for one complete discharge-charge cycle. This allows the fuel gauge IC to recalibrate against the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell — which causes percentage jumps and premature shutdowns.

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

This happens because the fuel gauge IC carries calibration data from the old, degraded cell. When a fresh cell is installed, the IC's internal charge map no longer matches the new cell's actual voltage curve. Under modem or screen load, the cell voltage dips below what the IC expects at that percentage, triggering an emergency shutdown. One full discharge down to the BMS floor followed by a full charge resets the coulomb counter and eliminates most of these premature cutoffs.

Phone reporting wrong battery percentage after installing the replacement cell

The Galaxy Core's fuel gauge IC uses a stored discharge curve built around the original cell's impedance profile. A new cell has lower internal resistance, so the voltage readings at any given state of charge are slightly higher than the IC expects — leading it to report inflated or erratic percentages. The fix is straightforward: run the phone down until it shuts off from low battery, then charge uninterrupted to 100% without unplugging early. After one complete cycle the IC recalculates its curve against the new cell and percentage reporting stabilises.

Compatible Models

GT-I8260 GT-I8262 Galaxy Core Galaxy Core Duos SM-G350 SM-G3502 SM-G3502U SM-G3509 SM-G3508 Galaxy Core Plus Galaxy Trend III SM-G3508i SM-G3508j SM-G3502i

Replaces Part Numbers

B150AE B150AC B185BE B185BC GH43-03849A

Technical Specifications

Voltage3.8V
Amp Hours1800mAh
Capacity1800mAh
Rate6.84Wh
Net Weight30g /1.06 oz
Gross Weight55g /1.94 oz
Approximate Weight55g /1.94 oz
Dimension 58.85 x 46.03 x 5.10mm

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 Core shuts off suddenly around 25% battery after I put in the new cell — what's happening?

The fuel gauge IC on the GT-I8260 and GT-I8262 is still calibrated to the old cell's voltage curve. A fresh cell holds voltage higher under load, so the IC misreads state of charge and trips an emergency shutdown when modem or display load causes a brief voltage dip. Run the phone down until it shuts itself off, then charge to 100% in one uninterrupted session. After that single full cycle the coulomb counter resets against the new cell and the shutdowns stop.

The phone feels warm near the battery compartment during the first few charges after swapping the cell — is that normal?

Yes, and it's specific to the first few charges on a new cell. A fresh Li-ion cell has slightly higher impedance than a broken-in one, so the charge IC works harder to push current through it — generating more heat than you'd see after a few cycles. The warmth drops off noticeably once the cell has gone through two or three full charge cycles and impedance settles. If the phone stays hot after the third full charge, check that the back cover is seated flat and not pinching the cell.

My GT-I8262 won't power on at all after the replacement battery sat in a drawer for a few months — how do I recover it?

A cell stored without being charged can drop below 2.5V per cell, which triggers BMS lockout — the protection circuit disconnects the cell to prevent damage and the phone shows no signs of life. Plug the phone into a wall charger (not a PC USB port, which may not supply enough current) and leave it for 20–30 minutes without pressing the power button. The charge IC trickle-charges the cell back above the BMS re-enable threshold, typically around 3.0V, at which point the protection circuit resets and the phone will power on normally.

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