Summary

This document describes how to replace a laptop battery and use AC adapters. It includes information on battery types and their connection to the laptop.

Full Transcript

*     u Learning Plan Page 3 of 6 : Battery Replacement 3 4 7 6...

*     u Learning Plan Page 3 of 6 : Battery Replacement 3 4 7 6 Lessons Table of Contents Confidence Levels Notes Bookmarks Highlights Done Reviewing C Strengths & Rate Your Confidence Weaknesses High k Lessons Medium X PBQs BATTERY REPLACEMENT Low , Labs Portable computers can work off both building power and battery operation. Continue  r Practice AC Adapters Category v Assessments To operate from building power, the laptop needs a power Topic 8C: Install and Configure supply to convert the AC supply from the power company to the Laptop Hardware g Flashcards DC voltages used by the laptop's components. The power supply is provided as an external AC adapter. AC adapters are normally j Game Center universal (or auto-switching) and can operate from any 110–240 VAC 50/60 Hz supply, though do check the label to confirm. " Resources A laptop AC adapter. (Image by Olga Popova © 123RF.com) Plugging a fixed-input 220–240 V adapter into a 110–120 V supply won't cause any damage (though the laptop won't work), but plugging a fixed-input 110–120 V adapter into a 220–240 V supply will likely cause damage. AC adapters are also rated for their power output (ranging from around 65–120 W). Again, this information will be printed on the adapter label. The AC adapter connects to the laptop via a DC jack or a USB port. Battery Power Laptop computers use removable, rechargeable Lithium ion (Li- ion) battery packs. Li-ion batteries are typically available in 6-, 9-, or 12-cell versions, with more cells providing for a longer charge. The connector and battery-pack form factor are typically specific to the laptop vendor and to a range/model. Before inserting or removing the battery pack, you must turn the machine off and unplug it from the AC wall outlet. A portable battery is usually removed by releasing catches on the back or underside of the laptop. *    u Learning Plan Page 3 of 6 : Battery Replacement 3 4 7 6 C Strengths & Rate Your Confidence Weaknesses k Lessons X PBQs , Labs A removable laptop battery pack. (Image by cristi180884 © 123RF.com) r Practice Category v Assessments The battery recharges when the laptop is connected to the AC Topic 8C: Install and Configure adapter and is connected to power. When the laptop is in use, Laptop Hardware g Flashcards the battery is trickle charged. A laptop should come with a power management driver to ensure a proper charging regime j Game Center and prevent repeated trickle charging from damaging it. Li-ion battery life is affected by being fully drained of charge and by " Resources being held continually at 100% charge. Balanced power charging stops trickle charging at 80%. Li-ion batteries are also sensitive to heat. If storing a Li-ion battery, reduce the charge to 40% and store at below 20ºC. Customization in MyASUS V3.1.0.0. MyASUS laptop app with customizable power plans. Balanced mode prevents the battery from being continually trickle charged to 100%, which can reduce its operational life. (Screenshot used with permission from ASUSTek Computer Inc.) Li-ion batteries hold less charge as they age and typically have a maximum usable life of around 2–3 years. If you charge a battery and the run time is substantially decreased, you may need to purchase a new battery.  Report Content Errors

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