B600BZ Samsung Galaxy SM-W750V Replacement Battery 3.8V 2600mAh
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B600BZ Samsung Galaxy SM-W750V Replacement Battery 3.8V 2600mAh - 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
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
B600BZ Samsung Galaxy SM-W750V Replacement Battery 3.8V 2600mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.8V
Amp
2600mAh
Samsung SM-W750V / Ativ SE — 3.8V Li-ion 2600mAh Replacement Battery (B600BZ)
This is a 3.8V, 2600mAh Li-ion replacement cell for the Samsung SM-W750V, also sold as the Ativ SE and Ativ SE Neo (Huron). It uses OEM part number B600BZ and slots into the same battery bay without modification. Capacity matches the original spec at 9.88Wh.
- SM-W750V / Ativ SE platform fit: These four model variants share the same chassis, battery bay dimensions, and connector pinout. The BMS handshake voltage and thermistor line are identical across the group, so one cell covers the full range.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an SM-W750V unit. The BMS accepted charge without fault codes, thermistor communication stayed active throughout, and the fuel gauge IC tracked state-of-charge across the full voltage window from 4.35V to 3.0V cutoff.
- First-cycle fast charge caution: On first use after installation, disable fast charging and complete one full discharge-to-charge cycle at standard rate. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's discharge curve before high-current charging is applied to an uncalibrated cell.
Why the Ativ SE reports wrong battery percentage after a B600BZ swap
The SM-W750V uses a coulomb-counting fuel gauge IC that builds its charge model against the specific cell installed. When you swap to a new B600BZ, the IC still holds the discharge curve data from the degraded original cell. It then applies that old curve to the new cell, which has different impedance and capacity characteristics. The result is percentage readings that are off by 10–20% until the IC recalibrates. One complete discharge cycle down to shutdown, followed by a full charge to 100%, resets the curve data and restores accurate reporting.
Sudden shutdown at 20–30% on the replacement cell
This happens when the modem radio or display fires a high-current draw and the cell voltage drops sharply under load. The phone's protection circuit reads this as an undervoltage event and cuts power before the percentage counter catches up. It is not a faulty cell — it is a fuel gauge IC that has not yet mapped the new cell's internal resistance. Run the phone through two full discharge-charge cycles at standard charge rate, and the IC will learn the actual voltage sag curve. After calibration, the shutdown threshold will align with real cell state, and cutoffs below 20% should stop.
Compatible Models
Replaces Part Numbers
Technical Specifications
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
The Ativ SE won't power on at all after sitting in a drawer for months — is the new B600BZ dead on arrival?
It is almost certainly not dead. A cell stored in deep discharge can drop below 2.5V, which triggers BMS lockout to prevent cell damage. Connect the phone to a wall charger — not a PC port — and leave it for 20–30 minutes without pressing the power button. The charge IC needs time to trickle current into a locked-out cell before the BMS will allow normal boot. If the phone shows a charging indicator after that window, the cell is recovering normally.
Fast charging stopped working after we put the new B600BZ in — the phone only slow charges now.
On the first charge cycle after a cell swap, the SM-W750V's charge controller sometimes refuses to negotiate the high-current fast charge protocol until it has confirmed the new cell's thermistor is reading within expected temperature limits. Let the phone complete one full charge at standard rate. On the second cycle, fast charging typically resumes automatically. If it does not, check that the battery connector is fully seated — a slightly lifted pin on the thermistor line will suppress fast charge indefinitely.
Battery percentage is jumping around erratically — goes from 45% to 12% then back to 38% in minutes.
This is the fuel gauge IC recalibrating against the new cell's impedance profile. The old cell it was calibrated to had high internal resistance from age and degradation. The new B600BZ has significantly lower resistance, so the same load current produces a different voltage response, and the IC briefly loses its position on the discharge curve. Run two complete discharge cycles — drain to auto-shutdown, charge fully to 100% — without interrupting the cycle mid-way. After the second full cycle the coulomb counter stabilises and erratic jumps stop.
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