New AA-PBTN4LR 15.4V 54Wh Laptop Battery for Samsung NP940X3M NP940X3M-K01US NP940X3M-K02US NP940X5M NP940X5M-X01US NP940X5N NP940X5N-X01US NT930SBE NT950SBE Series BA43-00386A

Installation steps: You need to turn off your laptop and disconnect the power. 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. Remove the old battery, carefully install the new battery on the battery case, screw in the screw, and connect the wiring of the new battery. If you don't understand the above steps, you can search for the video about laptop battery installation on YouTube. Maybe it will help you. Matters needing attention After installing the battery, you can try to calibrate the power management system. Discharge the new battery to 5% (not 0%), then charge and cycle 3-4 times to wake up the new battery. During the use of the battery, it is best not to discharge to less than 5% or turn off the computer power. Avoid man-made impact, disassembly, squeeze or puncture. Do not throw it into fire or water.Avoid using the battery in an environment where the temperature is too high or too low. Make sure to charge the battery more than 80% per month. Frequently Asked Question Solution: Q: Why my computer didn't recognize this battery or I install this battery and it doesn't seem to work? A: The reason is residual power stored in the laptop components that was preventing the battery from working properly. Please disconnecting the old battery, and holding down the power button for 20 seconds, then connect the new battery. This drains the residual or flea power and once the laptop is reassembled the battery will function properly.