You may want to consider a battery replacement. If doing this fails to restore your mAh readings and your actual battery life, your battery may be losing charge due to natural aging. Re-connect the power adapter and allow the unit to fully charge.Turn the system off, or let it sleep for 5 hours.Keep the system on and awake until it goes to sleep automatically because the battery is running low.Disconnect the power adapter and allow your system to run from the battery.After fully charging, keep power connected for a few hours.It will help you in keeping track of system activities and temperature. Read Also: Best App to Find Duplicate Photos on Mac. Fully charge your unit's battery (the light on the power adapter will be green) SMART (Self Monitoring Analysis and Reporting Technology) Utility is one of the most efficient and useful Mac temperature monitors to say yes to.If your mAh reading is below 5000, you may want to attempt a battery calibration.įull instructions for battery calibration are contained in Knowledge Base document #86284, but the basic steps are as follows: Most units ship from the factory with mAh readings between 55. If your mAh reading is above 5000, your battery is in relatively good shape. Look for the line that reads "Full Charge Capacity (mAh):"Īlternatively, you can get more detailed information using a utility like coconutBattery. When you place the metal and copper in salt water, it creates a chemical reaction that generates electricity. The reading can be found in the Apple System Profiler (located in Applications/Utilities) under the "Power" sub-section. You will need salt, water, containers (cups, cans or buckets), insulated copper wire, pieces of copper a minimum of two inches square in size, galvanized steel or common sheet metal and metal alligator clips for terminal leads. You can check the mAh reading for your battery in a number of ways. The lower this number, the less energy will be available for your notebook while disconnected from external power. MAh stands for milliamp-hours - essentially this is a measurement of how much energy is stored in the battery. If you are concerned that your portable Mac battery is providing less run-time than it did when you initially purchased the system (or the battery), you might want to check mAh reading.
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