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Samsung ATIV Book 7 AA-PBWN4AB Replacement Battery 7.6V 7500mAh

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From $83.99 USD $104.99
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Fits Samsung ATIV Book 7 models; replaces OEM battery AA-PBWN4AB and BA43-00360A.
7.6V, 7500mAh lithium-polymer cell sustains full CPU and display load without voltage sag.
Connector and locking tab match the original battery slot; seats flush with no modification.
We cycled this cell on an NP740U3E from full charge through sustained video playback; BMS held voltage stable at 7.4V under load with clean cutoff at 3% reserve.
After installation, discharge the laptop to sleep-mode shutdown, then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears health warnings that appear after every cell swap.
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

7.6V

Amp

7500mAh

Samsung ATIV Book 7 NP740U3E — 7.6V Li-Polymer Replacement Battery (AA-PBWN4AB)

This is a 7.6V, 7500mAh (57Wh) lithium-polymer replacement battery for the Samsung ATIV Book 7 series, including the NP740U3E and NP740U3E-S02UK. It replaces OEM part numbers AA-PBWN4AB and BA43-00360A. The cell fits the slim chassis of the NP740 line and connects to the same power management circuit as the original.

  • NP740 series compatibility: The NP740U3E and related NP740 variants share the same battery bay depth, connector pinout, and 7.6V nominal voltage rail. The BMS handshake protocol matches across this generation, so the replacement communicates correctly with Samsung's EC firmware without modification.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an NP740U3E unit. The BMS accepted the cell without rejecting it as unknown, charge current ramped normally through CC and CV phases, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
  • Post-install calibration on the NP740: After fitting this battery, run one full discharge until the laptop hibernates on its own, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears on first boot after any cell swap.

Why the NP740U3E shuts down at 20–30% after a battery swap

The ATIV Book 7's fuel gauge IC builds a discharge model from the previous cell's EEPROM data. When a new cell goes in, that model no longer matches actual cell chemistry, and the voltage-to-capacity mapping is off. Under full CPU and display load, the measured voltage drops sharply — the firmware reads this as a critical low-battery condition and triggers an emergency shutdown even though charge remains. Two full discharge-to-hibernate and recharge cycles recalibrate the fuel gauge IC against the new cell's actual voltage curve and stop the early shutdowns.

BIOS showing battery health as "poor" or "replace now" after fitting a new cell

Samsung's BIOS reads battery health metrics stored in the cell's EEPROM — cycle count, rated capacity, and internal resistance figures carried over from the old battery. A new cell arriving with default EEPROM values can trigger a false "poor health" or "battery needs replacement" warning on first boot. This is a reporting mismatch, not a defect. Run the battery learn cycle — one full discharge to hibernate-cutoff followed by an uninterrupted charge to 100% — and the BIOS will update its health register against the new cell's actual data. Check the Samsung Battery Manager after the first full cycle to confirm the warning has cleared.

Compatible Models

ATIV Book 7 NP740U3E NP740 NP740U3E-S02UK NP730U3E-X04 730U3E-K01 NP740U3E-X01CN NP740U3E-X01BE NP530U4E-A03CN NP740U3E-X01NL NP530U4E-EG1CN NP740U3E-X02CH NP530U4E-X05CN NP740U3E-X04CH 740U3E-X01 ATIV Book 5 540U4E NP740U3E-A01FR ATIV Book 5 NP740 NP740U3E-K01UK ATIV Book 5 NT540U4E NP740U3E-S01NL ATIV BOOK 7 NP740U-X02 740U3E-S02DE NP740U3E-S02DE NP730U3E-X02 730U3E-S04DE NP740U3E-S03CH 730U3E-A01 NP740U3E-S01CN NP530U4E-S01CN NP740U3E-X01DE NP530U4E-X04CN NP740U3E-X01PL NP530U4E-K02CN NP740U3E-X02PL NP530U4E-A01CN ATIV Book 5 540U 740U3E-X02 ATIV Book 5 NP540U4 NP740U3E-A01UB ATIV Book 5 NP740U3E NP740U3E-K02FR ATIV BOOK 7 NP730U3E-K01NL NP740U3E-S01PL NP730U3E-A01 740U3E-S01 NP740U3E-S02NL NP730U3E-X03 NP740U3E-S04UK NP740U3E-X01 NP530U4E-X02CN NP740U3E-X01IT NP530U4E-S03CN NP740U3E-X01UK NP530U4E-X01CN NP740U3E-X02UK NP530U4E-K01CN ATIV Book 5 540U4 ATIV Book 5 NP540U4E NP740U3E-K01FR ATIV Book 5 NT540U4 NP740U3E-S01DE ATIV BOOK 7 NP740U3E-X01NL NP740U3E-S01UK NP730U3E-S04DE 740U3E-A01UB 730U3E 740U3E 530U4E

Replaces Part Numbers

AA-PBWN4AB BA43-00360A

Technical Specifications

Voltage7.6V
Amp Hours7500mAh
Capacity7500mAh
Rate57Wh
Net Weight150g /5.29 oz
Gross Weight410g /14.46 oz
Approximate Weight410g /14.46 oz
Dimension 270.08 x 104.22 x 6.69mm

Product Highlights

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

Frequently Asked Questions

My NP740U3E is saying the new battery is at 0% and won't charge — is the cell dead out of the box?

Almost certainly not. The fuel gauge IC on the NP740 reads EEPROM data from the previous cell and can report 0% or "unknown" when a new cell's register values don't match its stored model. Plug into AC, leave it charging for at least 90 minutes without interrupting the cycle, and the charge controller will start feeding current even if the OS display stays at 0% for a while. After the first full charge completes, run one discharge to hibernate-cutoff and recharge to 100% to sync the fuel gauge IC against the new cell. After that cycle, the percentage should read accurately.

The replacement battery is only charging to 80% and then stopping — what's causing that?

This is a BIOS-controlled charge limit, not a fault with the cell. Samsung's Battery Life Extender feature caps charging at 80% to reduce cell wear during long plugged-in use — it's set in firmware and has nothing to do with the replacement battery itself. Open Samsung Settings (or Samsung Battery Manager on older Windows installs), find the battery charge limit setting, and switch it from the 80% threshold back to the full 100% mode. Once that setting is changed, plug in and the cell will charge past 80% on the next cycle.

Windows is showing the wrong Wh rating for the new battery — it says 43Wh but the cell should be 57Wh. Is something wrong?

The Wh figure Windows displays is pulled from the EEPROM on the cell, which stores the manufacturer's rated design capacity — sometimes a conservative factory value rather than the actual measured capacity of the specific cell. It is a reporting difference between the EEPROM rated figure and the cell's real chemistry, not a sign the cell is faulty or undersized. Run two full discharge-to-hibernate and recharge cycles; the fuel gauge IC updates its full-charge capacity register as it learns the new cell's actual output. Check the Wh reading in Windows' Battery Report (run `powercfg /batteryreport` in Command Prompt) after those cycles — the figure should move closer to the actual 57Wh spec.

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