Samsung Galaxy Book AA-PBSN4AF Replacement Battery 15.4V
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Samsung Galaxy Book AA-PBSN4AF Replacement Battery 15.4V - 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
⚠️ 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.
Samsung Galaxy Book AA-PBSN4AF Replacement Battery 15.4V - is backordered and will ship as soon as it is back in stock.
Voltage
15.4V
Amp
3500mAh
Samsung Galaxy Book NP750XDA / NP930SBE Series — 15.4V Li-Polymer Replacement Battery (AA-PBSN4AF)
This is a 15.4V, 3500mAh (53.9Wh) Li-Polymer replacement battery for the Samsung Galaxy Book NP750XDA-KD1IT and related Galaxy Book and Galaxy Book Flex Alpha models. It fits the thin convertible form factor and matches the OEM connector and BMS protocol for that platform. Install it when the original cell can no longer hold a charge across a full work session.
- NP750XDA, NT930SBE, NP930SBE, and NP730QCJ platform fit: These models share the same 15.4V battery rail, AA-PBSN4AF connector pinout, and BMS handshake protocol. A single cell revision covers the full lineup without rewiring or adapter changes.
- Bench tested on actual hardware: We cycled this cell on the NP750XDA platform and confirmed the BMS accepted the new cell without triggering an overcurrent fault. Charge current ramped normally through CC and CV phases, and the fuel gauge IC registered cell capacity without error.
- Post-install calibration for Galaxy Book: After fitting this cell, run one full discharge down to hibernate cutoff, 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 after every cell swap on this platform.
BIOS reporting poor battery health immediately after swap on Galaxy Book
The Galaxy Book BIOS reads health data stored in the outgoing cell's EEPROM before shutdown. When a new cell arrives with a fresh EEPROM, the firmware has no prior charge history to compare against and flags the battery as degraded. This is a data mismatch, not a fault with the replacement cell. One full discharge-to-hibernate followed by an uninterrupted charge to 100% writes new baseline data and clears the warning on the next boot.
Galaxy Book shuts down hard at 20–30% shown on the gauge
This happens when the fuel gauge IC has not yet calibrated its empty-voltage threshold against the new cell's chemistry. Under combined CPU and display load, the cell voltage drops faster than the uncalibrated gauge expects, and the system hits a low-voltage cutoff the gauge didn't predict. The laptop cuts power to protect the cell even though the reported percentage still shows charge remaining. Run two full discharge-to-hibernate and full recharge cycles — after the second cycle the gauge threshold typically settles and the early shutdowns stop.
Compatible Models
Replaces Part Numbers
Technical Specifications
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
Samsung Galaxy Book shows "Battery health: Poor" in Windows settings right after I put the new battery in — is the cell actually bad?
The cell is not bad. The Galaxy Book BIOS reads health data from the old cell's EEPROM on its last shutdown, and when a fresh cell arrives with no stored history, the firmware flags it as degraded. Run one full discharge down to hibernate cutoff, then charge uninterrupted to 100%. That single learn cycle writes new baseline data to the EEPROM and the health warning clears on the next boot.
My Galaxy Book keeps cutting out at around 25% charge after I swapped the battery — the gauge jumps straight to 0% and shuts down.
The fuel gauge IC calibrates its low-voltage cutoff threshold against actual cell behaviour over the first few cycles. Until it does, the system hits a voltage cliff under CPU and display load before the gauge catches up, and the laptop shuts down even though the displayed percentage still shows charge remaining. Run two complete discharge-to-hibernate and full recharge cycles back-to-back. After the second cycle the threshold locks in and the early cutoffs stop — target a resting cell voltage of 15.4V at full charge to confirm normal operation.
Windows is reporting the battery capacity as the wrong Wh — it shows a different number than the 53.9Wh spec on the listing.
The Wh figure Windows displays pulls from the cell's EEPROM rated value, which is written at manufacture and may differ slightly from the actual chemistry capacity of the replacement cell. This is a metadata difference between what the old EEPROM reported and what the new cell stores — it does not affect real charge capacity or voltage output. Run the BIOS battery learn cycle: full discharge to hibernate, then a full uninterrupted charge to 100%. After that cycle, Windows recalculates the full-charge capacity reading against the new cell and the reported Wh figure corrects itself.
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