AA-PBUN4NP 15.2V 57Wh Samsung ATIV Book 9 Pro Battery — Factory-Direct Supply

OEM P/N: AA-PBUN4NP; cross-references BA43-00374A, 4ICP6/60/80, PBUN4NP
Specs: 15.2V · 3780mAh · 57Wh · Li-ion · Black
Compatible series: Samsung ATIV Book 9 Pro (NP940Z5J / NP940Z5L), Notebook 9 Pro (NP9300AA)
Distributor note: Wholesale orders fulfilled from stock; from factory stock; mixed orders welcome
Cycle life: Rated at ≥500 charge cycles; each completed cycle on this 57Wh platform returns substantially more runtime per cycle than smaller-capacity P/Ns on adjacent Samsung lines, lowering per-cycle cost across a managed device pool

Product Description

The AA-PBUN4NP replacement battery addresses a narrow but high-value procurement target: the Samsung ATIV Book 9 Pro and Notebook 9 Pro, a 15-inch premium platform released in a limited run that commands above-average aftermarket pricing due to restricted supply from most parts channels. At 15.2V and 57Wh, this unit matches the OEM specification for the NP940Z5J and NP940Z5L device families.

The Samsung ATIV Book 9 Pro battery population is effectively contained within two device series — NP940Z5J and NP940Z5L — plus the NP9300AA sub-designation, with regional variants for the US market identified by suffixes X01US, X03US, and S03US. Three cross-reference P/Ns (BA43-00374A, 4ICP6/60/80, PBUN4NP) resolve to the same physical unit, consolidating what appears in purchasing systems as multiple line items into a single stockable SKU.

For procurement managers sourcing batteries against a Samsung premium-tier fleet, this P/N fills a sourcing gap that frequently forces buyers into extended lead times when drawing from general aftermarket channels. Stocking one SKU against the full NP940Z5 device family — including US variants — removes the need to hold separate line items by suffix, and keeps warranty tracking consolidated against a single receivable.

Technical Parameters

Parameter	Details
Battery Model	AA-PBUN4NP
Compatible Part Numbers	AA-PBUN4NP · BA43-00374A · 4ICP6/60/80 · PBUN4NP
Brand Compatibility	Samsung
Voltage	15.2V (nominal)
Capacity	3780mAh
Energy	57Wh
Cell Type	Li-ion
Cell Configuration	4-cell
Color	Black
Condition	New replacement — OEM-grade compatible
Cycle Life	≥500 charge cycles
Certifications	CE · RoHS · FCC
Warranty	12 months
Package Includes	1 × AA-PBUN4NP replacement battery · UN38.3 compliant packaging
Compatible Laptop Models	NP940Z5J · NP940Z5L · NP940Z5L-X01US · NP940Z5L-X03US · NP940Z5L-S03US · NP9300AA
Application	Samsung ATIV Book 9 Pro / Notebook 9 Pro replacement battery — OEM-grade replacement, MSP service contract supply, insurance repair fulfillment
Supply Type	Factory-direct wholesale · From stock · Mixed-SKU orders accepted

Need a stable supply plan? Send your model list + quantities + destination. We’ll confirm lead time, shipping method, and compliance documents before you place the order.

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Features & Advantages

✅ 🔋 Failure Mode Prevention: Why 15.2V Precision Matters on the NP940Z5 Platform

The NP940Z5 series is among Samsung’s more voltage-sensitive platforms in the Book 9 lineup. The most common battery failure mode on this hardware is premature capacity loss triggered by sustained operation at incorrect cell voltage — a problem that originates when replacement units are sourced from listings that carry over a 14.8V nominal figure from adjacent Samsung P/Ns. This unit is built to the correct 15.2V specification, matching the OEM charge profile delivered by the NP940Z5J and NP940Z5L power management subsystem. Over 500 charge cycles, that voltage alignment prevents the accelerated degradation pattern that shortens effective service life on mismatched units. From a service depot standpoint, callbacks from customers reporting premature capacity loss trace disproportionately to voltage mismatches on this platform — a risk this unit eliminates at the specification level.

✅ 🔁 NP940Z5J, NP940Z5L, and NP9300AA Covered Under One P/N

The ATIV Book 9 Pro device population splits across NP940Z5J and NP940Z5L hardware generations, with the NP9300AA designation used for certain US retail configurations. AA-PBUN4NP covers all three identifiers. Cross-reference codes BA43-00374A and 4ICP6/60/80 both resolve to this same unit, which means purchase orders referencing any of the five identifiers (AA-PBUN4NP, PBUN4NP, BA43-00374A, 4ICP6/60/80, NP9300AA battery) draw from the same stock position. For service accounts tracking multiple Samsung premium-tier devices, this eliminates the SKU fragmentation that typically occurs when NP940Z5J and NP940Z5L units are treated as separate battery populations.

✅ ⚡ Samsung NP940Z5 EC Communication and BMS Protection Architecture

The NP940Z5 platform initiates an EC battery identification query at power-on and again when AC is connected. The response the system expects includes a valid authentication signature from the BMS PCB — without it, Samsung’s firmware on this platform issues a “Battery not recognized” alert in the BIOS and suspends the charge circuit. This unit’s BMS architecture addresses that sequence directly: thermal monitoring prevents cell temperature excursion from triggering a spurious authentication failure, while the over-discharge protection circuit ensures cell voltage stays above the minimum threshold that causes the NP940Z5 EC to log a non-recoverable battery fault. Short-circuit protection and overcharge cutoff operate at the cell boundary before the EC communication layer is affected.

✅ 📦 Purchase Order Simplification for Multi-Unit Samsung Fleet Accounts

Service contracts covering Samsung premium-tier hardware often involve mixed NP940Z5 and NP940X-series device populations. Wholesale orders for AA-PBUN4NP can be placed on the same purchase order as other Samsung battery lines — no minimum SKU split, no separate order requirement by series. This collapses what would otherwise be two or three separate PO events into a single receivable line, reducing the administrative overhead in receiving, invoicing, and warranty-tracking workflows for accounts managing multiple Samsung battery P/Ns simultaneously. From stock; mixed orders welcome.

✅ 🌐 Procurement Qualification for Institutional Buyers Requiring OEM-Grade Classification

The AA-PBUN4NP is supplied as an OEM-grade replacement unit — a classification that matters directly to institutional procurement workflows where purchasing policy requires battery replacements to meet or exceed OEM performance standards. Government IT procurement, managed service provider contracts, and insurance repair fulfillment channels that specify “OEM-grade replacement” as a condition of purchase can source this P/N against that requirement without a separate qualification step. CE, RoHS, and FCC certifications are included; documentation is available on request to satisfy vendor onboarding requirements in compliant procurement environments.

Packing & Delivery

Lead Time & Shipping

In-stock items: Ship within 3 days
For standard replacement models with available inventory.
Mass production orders: Ship within 7 days
For regular models under confirmed specifications and packaging requirements.
Customized orders: Ship within 15 days
For custom cell configuration, size, wire/connector, PCB/BMS, labeling, or packaging.

Note: Final dispatch time depends on total quantity, model complexity, packaging requirements, and shipping compliance documents. We will confirm the estimated shipping date (ETD) after order confirmation.

Available shipping methods:

Air freight (urgent, smaller volume)
Sea freight (cost-effective for bulk)
Rail / Truck (subject to destination)
Express channels

Compliance & Documents:

Documents available: UN38.3 / MSDS / Transport Test Report (if applicable)
Compliant packaging and carton labeling can be arranged based on the chosen shipping method.

Shipping terms:

EXW / FOB / CIF / DDP available

FAQ

Q1: Several parts databases list both AA-PBUN4NP and AA-PBUN4AR for Samsung ATIV Book 9 — are these interchangeable, or do they fit different devices?

A1: These are distinct P/Ns serving different Samsung Book 9 platforms and are not interchangeable. AA-PBUN4NP at 15.2V / 57Wh is specific to the ATIV Book 9 Pro — NP940Z5J and NP940Z5L series — which are 15-inch premium configurations. AA-PBUN4AR is a separate 7.7V / 39Wh unit for the ATIV Book 9 Spin (NP940X3L) and the 900X5L series. Voltage, capacity, cell count, and connector configuration all differ. For purchase orders covering both device populations, these P/Ns must be ordered as separate line items; no cross-fit is possible.

Q2: Some listings show AA-PBUN4NP with a 14.8V rating. Is there a voltage variant, or is 15.2V the correct specification?

A2: There is no 14.8V variant of this P/N. The 14.8V figure appears in a small number of aftermarket listings that have applied a rounded nominal from adjacent Samsung P/Ns without verifying the actual cell specification. Samsung’s published documentation and the majority of specialist parts databases consistently place AA-PBUN4NP at 15.2V nominal. Sourcing a 14.8V-rated unit for this platform introduces a charge profile mismatch that the NP940Z5 power management subsystem will flag — resulting in reduced charge acceptance or a BIOS battery warning on some firmware versions.

Q3: Does coverage extend to the Samsung NP9300AA? This device appears in some procurement systems but is absent from most parts listings.

A3: NP9300AA is a US retail designation used for certain ATIV Book 9 Pro configurations that share the same chassis, power management hardware, and battery bay as the NP940Z5L. AA-PBUN4NP is a confirmed fit. The absence of NP9300AA from many aftermarket listings reflects incomplete cross-referencing by parts database compilers rather than an actual compatibility gap. Procurement teams that have NP9300AA device records in their asset management systems can source AA-PBUN4NP directly against that entry.

Q4: After installing AA-PBUN4NP, the NP940Z5L shows a charging indicator but capacity reads 0% and does not increase. What should be checked?

A4: A 0% capacity reading that does not increment on an otherwise connected system typically indicates the EC has not completed its post-install battery handshake reset. On the NP940Z5 platform, the embedded controller retains state from the previous battery session. To clear it: shut down fully (not sleep or hibernate), disconnect AC, hold the power button for 30 seconds to drain residual charge from the system board, then reconnect AC and restart without the battery seated. Once the OS has loaded with AC only, power off, seat the battery, and reconnect AC for a full charge cycle from a cold state. The capacity register should initialize correctly on the next boot.

Q5: As a factory-direct supplier, how does ordering AA-PBUN4NP work for managed service providers who need to combine it with other Samsung P/Ns on a single order?

A5: Ordering directly from the manufacturer means the full Samsung battery range — including AA-PBUN4NP alongside other P/Ns covering Book 9, Book 5, and ATIV Book 3/4 lines — is available on a single consolidated order. No per-P/N minimums apply separately; low MOQ covers the combined line item. Submit your P/N list with quantities by contact form or email and we’ll return a consolidated quote. For MSP accounts running standing replenishment cycles, we can structure a blanket order arrangement to simplify reordering across service intervals.

Q6: Is the AA-PBUN4NP physically interchangeable with batteries from other Samsung 15-inch premium lines, such as the Notebook 9 Pro (NP940X-series)?

A6: No. The NP940X-series Notebook 9 Pro uses different P/Ns — primarily AA-PBTN4LR (15.4V / 54Wh) — with a different connector position, cell configuration, and charge profile. The NP940Z5 chassis and the NP940X chassis use physically distinct battery bays; the connectors are not interchangeable. IT asset managers maintaining a mixed population of NP940Z5 and NP940X devices must maintain separate battery SKUs for each chassis family. Attempting to fit an NP940X-series battery into an NP940Z5 bay will not complete a physical connection.