39Wh Samsung AA-PBUN4AR Battery

39Wh AA-PBUN4AR Battery for Samsung Notebook 9 900X5L, NP900X5L, NP940X3L and ATIV Book 9 Spin 940X3L Series

This 39Wh Samsung AA-PBUN4AR battery is designed for compatible Samsung Notebook 9
and ATIV Book 9 Spin laptops, including selected 900X5L,
NP900X5L, 940X3L, and NP940X3L series models.
It is a suitable choice when your current battery drains quickly, no longer holds a charge, or your
Samsung laptop needs stable portable power again.

With a 7.7V output voltage, 5120mAh / 39Wh capacity, and
2-cell battery design, this battery supports everyday portable use such as office
work, study, browsing, email, document editing, video playback, online meetings, and travel.

Product Information

Compatible Part Numbers

Please compare the part number printed on your current battery before ordering. This battery is
suitable for the following Samsung battery part number:

• Samsung AA-PBUN4AR

Compatible Model Series

This Samsung AA-PBUN4AR battery is designed for the following Samsung Notebook 9 and ATIV Book 9
Spin model series. Please check both your laptop model and battery part number before placing your
order.

Samsung Notebook 9 Series

• Samsung Notebook 9 900X5L
• Samsung Notebook 9 NP900X5L
• Samsung Notebook 9 NP940X3L
• Samsung 900X5L
• Samsung NP900X5L Series
• Samsung 940X3L

Samsung ATIV Book 9 Spin Series

• Samsung ATIV Book 9 Spin 940X3L
• Samsung Notebook 9 Spin 940X3L

When Should You Replace Your Samsung Notebook Battery?

If your Samsung Notebook 9 or ATIV Book 9 Spin no longer provides enough runtime for normal use,
replacing the battery can help restore convenient portable performance without replacing the entire
laptop.

• The battery drains much faster than before.
• The laptop shuts down unexpectedly during use.
• The battery percentage drops suddenly or behaves abnormally.
• The laptop only works when connected to the charger.
• The battery does not charge to full capacity.
• Windows or BIOS shows a battery health warning.

Why Buy This AA-PBUN4AR Battery?

• Designed for Samsung Notebook 9 models: suitable for selected 900X5L, NP900X5L, 940X3L, and NP940X3L series laptops.
• Also suitable for ATIV Book 9 Spin: supports selected 940X3L Spin models.
• 39Wh capacity: supports everyday portable use, office work, study, browsing, documents, and travel.
• 2-cell battery design: made for compatible Samsung systems using the listed AA-PBUN4AR battery specification.
• Stable power output: built for compatible Samsung laptops that use 7.7V AA-PBUN4AR batteries.
• Brand new battery: a practical option when your current battery becomes weak or unreliable.
• 12-month warranty: gives customers more confidence when ordering.
• 30-day return policy: provides extra peace of mind after purchase.

Important Compatibility Reminder

Samsung laptop batteries may look similar but can have different voltage, connector position,
battery shape, capacity, color, or internal layout. Before ordering, please confirm that your
current battery part number matches AA-PBUN4AR.

You can usually find the battery part number printed on the battery label. You can also check your
Samsung laptop model number on the bottom cover, Windows system information page, BIOS, or original
device label.

Before Ordering

• Verify your exact Samsung laptop model number.
• Compare your current battery part number with AA-PBUN4AR.
• Compare your current battery shape with the product images.
• Confirm that the battery connector type and position match your original battery.
• Check that your current battery voltage matches the product specification.
• Contact us if you need help confirming compatibility before purchase.

Installation Notes

• Turn off the laptop completely before replacing the battery.
• Disconnect the charger and any external devices.
• Use the correct tools and open the laptop carefully to avoid damaging the case, screen, or internal parts.
• Do not bend, puncture, disassemble, or force the battery during installation.
• Make sure the battery connector is properly aligned before closing the back cover.
• After installation, charge the battery fully before regular use.
• If you are not familiar with Samsung laptop repair, professional installation is recommended.

Frequently Asked Questions

Is this battery suitable for Samsung AA-PBUN4AR?

Yes. This battery is suitable for Samsung AA-PBUN4AR.

Does this battery fit Samsung Notebook 9 900X5L?

Yes. This battery is listed for selected Samsung Notebook 9 900X5L and NP900X5L series laptops.

Can this battery be used for Samsung NP900X5L?

Yes. Samsung NP900X5L series is included in the compatible model list.

Does this battery fit Samsung Notebook 9 NP940X3L?

Yes. Samsung Notebook 9 NP940X3L is included in the compatible model list.

Does this battery support Samsung ATIV Book 9 Spin 940X3L?

Yes. This battery is listed for selected Samsung ATIV Book 9 Spin 940X3L and Notebook 9 Spin
940X3L models.

What voltage is this battery?

This battery has an output voltage of 7.7V. Please compare it with the voltage printed on your
current battery before purchase.

What capacity is this battery?

The battery capacity is 5120mAh / 39Wh.

How many cells does this battery have?

This battery uses a 2-cell design.

Is this battery brand new?

Yes. This product is listed as brand new.

What should I check before buying?

Please check your Samsung laptop model, current battery part number, battery voltage, battery shape,
and connector position. The safest way to confirm fit is to compare the part number on your current
battery with AA-PBUN4AR.