How to solve the problem that your Apple laptop battery can not be identified

Apple Macbook and MacbookPro, lithium-ion battery is completely empty, when you re-bot the laptop, you will see the battery with a red X icon on the menu bar, it shows your  Apple laptop battery still can not be recognized by the computer. Now we will tell you the solutions of apple laptop battery can not be identified.

If your MacBook or MacBook Pro battery is completely discharged, the battery will automatically enter a low power state in order to maintain the ability to charge it. Completely depleted the battery power maybe due to you use the laptop until it sleep, but you did not charge it and keep the battery with a low power state for long time.

If you completely run out of battery power, then when you plug the power line and re-bot the computer, you will see a battery with red X icon on the menu bar, If you see this icon, then recharge the battery for more than five minutes to make it to exit the low power mode, And then start charging again. If after 5 minutes your battery is still can not be recognized by the computer ( the battery icon still have a red X ), then you may need to reinstall the battery. If after re-installing the battery, the laptop still can not recognize the battery, then try resetting the PMU. (battery chargers US online shop)

Reset the MacBook and MacBook Pro System Management Controller (SMC)

Apple laptop battery can not be referenced by the identified solution is the Intel-based portable computer  produced after the 2 in 2006 .

The System Management Controller is an integrated circuit (computer chip), which is located in the MacBook or MacBook Pro logic board. As the name suggests, it is responsible for the computer's power management. It controls backlighting, hard disk spin down, sleep and wake, charging aspects of performance, the touch pad control, as well as the related input / output when the computer falling asleep.

Over a certain time, the sets in the System Management Controller may fail, it may lead to the computer's operating anomalies. For example, you can not open, you can not wake the laptop from sleep, can not charge the battery, can not recognize the AC adapter.(dell inspiron 1545 laptop battery)

To reset the SMC can not be used as the first choice when the computer is not responding. SMC reset is not required, it is just treat as the last solution suspect the power management system hardware failure.

For most situations, a restart is sufficient. If the computer stops responding, then try the following steps one by one, try to test between two steps, see if it can work,  If one step does work, then you do not have to consider the following steps, because you have solve the problem, you can start running! If you try all the steps listed here, but the computer still does not work, then you should only reset the SMC.

1. Force Quit (Option-Command-Escape)
   2. Restart (Control-Command-Power)
   3. Forced to Shut Down (press the power button for 10 seconds)

Only when the above steps do not solve the problem should you consider resetting the SMC in the computer.

1. If the computer is turned on, then turn it off.
2. Disconnect the AC adapter and the removal of the computer's battery.
3. Press and hold power button for 5 seconds, then release the key.
4. Reconnect the battery and AC adapter.
5. Hold down the power button to restart the computer.