Rechargeable batteries as many know have a limited life span. Typically a notebook/laptop battery should last the entire life of the computer but there are occasions where it's life may be shortened.
Below I'll list some Do's & Don'ts for your battery to help extend it's life either through the charge cycle or it's lifetime.
- Keep your computer in a cool, comfortable environment. Hot computers stress components in general but batteries are very temperature sensitive especially in very cold or very hot environments.
- Charge battery up to 70% when storing or not using computer for long periods of time.
- Charge up fully and use until a 50% charge is remaining then recharge again.
- Be plugged in when doing cpu/memory intensive projects such as in iMovie, iBooks Author, Garageband, etc.
- Charge with a damaged charger or charge in the presence of liquids (i.e. near open top or non-spill proof containers or outside).
- Purchase counterfeit or use repaired chargers. Counterfiet chargers are typically sold at Amazon or other resellers for under $40. Refurbished chargers from accredited resellers typically range in the $50-60 range. Repaired chargers are dangerous be it ones repaired DIY style with electrical tape or ones repaired by a non certified electronics shop.
- Charge up fully then wait until 0 or -0% remaining before charging up again and then repeat the same behavior over and over. This behavior will cause premature battery failure. When a battery needs to charge from 0 to 100% it will cause a charge cycle to be recorded. A charge cycle occurs when a battery must cycle from having no available power to having full power. When charging up from 0% remaining the battery generates large amounts of heat which will shortening it's lifespan. *As of this writing (4/3/18) staff MacBooks should have no more than 60-70 charge cycles. There are at the time of this writing at least 30-40 with numbers above 100 and one with numbers above 300. Do not be one of these people.
Checking Charge Cycles
- Mouse up to the very left side of your screen and click on the Apple logo
- Choose About This Mac
- When the window appears in the middle of your screen click System Report...
- Select Power from the list on the left side of the window.
- Under Health Information make a note of your Cycle Count. Anything over 60-70 is abnormal and you should alter your charging behavior immediately.
*The technology department does inventory cycle count data and will randomly do audits to ensure proper care and usage.