AA-PBSN4AF 54Wh Laptop Battery for Samsung Notebook 9 Pen NP930SBE NP930SBE-K01CN NP930SBE-K01HK NP930SBE-K01US NT930SBE-K28A Galaxy Book Flex Alpha NP730QCJ Flex2 Alpha NP730QDA NP730QDA AAPBSN4AF

About MULS
1. We have professional battery and adapter experience!
Strictly test before shipment to ensure full capacity and safety without harming the computer!
2. We recommend that the first charge is not less than 5 hours.
3. The new battery cannot be charged, is there a problem with the battery?
Usually not. The computer charges the battery for the first time. Due to the instability of voltage and current, the computer may stop charging the battery when the battery is half charged (sometimes more, sometimes less). If this happens, Don't worry, just take the battery out of the computer and recharge it again. The new battery charged for the first time may require several iterations. Don't worry, this is normal.
4. When the battery is in normal operation, if the battery is discharged to 3%, it must be shut down or recharged. If the battery is discharged to 0%, the battery will be damaged and its life will be attenuated.
5. Avoid falling, heating, and short-circuit, avoid using the battery in an environment where the temperature is too high or too low.
Specification

Voltage: 15.4V
Capatity: 54Wh 3500mAh
Condition: 100% brand new from manufacture, Grade A cell
Replacement for Part Number

AA-PBSN4AF PBSN4AF
AAPBSN4AF BA43-00391A 4ICP5/43/97
Compatible Laptop Models:
Fit for Samsung Notebook 9 Pen NP930SBE Series

NP930SBE NP930SBE-K01CN NP930SBE-K01HK NP930SBE-K01US
NP930SBE-K02CN NP930SBE-K02HK NP930SBE-K03CN
NP930SBE-K03HK NP930SBE-K04CN NP930SBE-K06CN
Fit for Samsung Notebook Pen S NT930SBE Series

NT930SBE NT930SBE-K28A NT930SBE-K38 NT930SBE-K38A
NT930SBE-K38W NT930SBE-K58 NT930SBE-K582B NT930SBE-K58A
NT930SBE-K58F NT930SBE-K58W NT930SBE-K716 NT930SBE-K716A
NT930SBE-KIBK NT930SBE-KT2W NT930SBE-KT3 NT930SBE-KT3W
Fit for Samsung Galaxy Book Flex Alpha NP730QCJ Series

NP730QCJ NP730QCJ-K01US NP730QCJ-K02US NP730QCJ-K04US
Fit for Samsung Galaxy Book Flex2 Alpha NP730QDA Series

NP730QDA NP730QDA-KA1US NP730QDA-KA3US NP730QDA-KB1US NP730QDA-KB3US
Please open the back cover of your laptop to check the original battery size and capacity before placing an order. Please scroll down to the list to purchase.
1. Turn off your laptop and disconnect the power.
2. Disconnect the connection between the old battery and the motherboard to avoid unnecessary damage caused by disassembling the battery. Then unscrew the old battery screws one by one and carefully save each screw.
3. Remove the old battery, carefully connect the new battery to the mainboard, reinstall all the parts that have been removed earlier, and connect the wiring of the new battery.
4. If you don't understand the above steps, you can search the relevant installation tutorial video on YouTube for help.
1. New battery: Discharge the new battery to 10% (not 0%), then charging up to 95% and repeat 3-4 times to activate the maximum capacity.
2. Overuse: Do not always run out of a battery to 0%, that would damage the battery or shorten the usage life.
3. Charging sequence: when charging, first install the battery, then turn on the power, when fully charged, first cut off the power, then pull the power plug.
4. Fully charge the battery before long-term storage, and keep charging once a month.
Do not store the battery at low power circumstances.

Could be caused by battery loss. Please re-install the battery and make sure that the battery cable and the motherboard interface are tightly inserted.
Maybe due to conductive material damage which the laptop motherboard and battery anode and cathode contact position, you can try to confirm it with your original battery.
Check whether the battery drive is in normal condition, if not, download the corresponding driver software to update.
MULS AA-PBSN4AF Replacement Battery How to Install A New Battery: Tips for Battery Maintenance: