Even more about the life of your laptop

This is the 3rd part of knowledge about your laptop life.

In part 3 of this article series Laptop Accessories let’s look at the meaning of battery life; how battery life is measured; what factors determine battery life and finally when do batteries begin to lose life.

What does the life of the battery mean?

Battery life is the term that is often used when Acer PA-1700-02 AC Adapter we speak about how long a battery can last (other terms we often use when speaking about battery life is battery capacity, battery runtime, battery mAh, battery milliamp rating, and battery playtime). All these terms speak about the life of the battery – how long the battery will power my PDA (or other mobile computing device) before I have to recharge.

How is battery life measured?

Battery life is a measurement of capacity. What is Battery Capacity? Battery capacity is a reference to the total amount of Dell K051125X keyboard energy stored within a battery. Battery capacity is rated in Ampere-hours (AH), which is the product of:

AH= Current X Hours to Total Discharge


Temperature - capacity, or energy stored, decreases as a battery gets colder. High temperatures also have an effect on all other aspects of your battery.

Cut off Voltage - To prevent damage to the battery and the device, batteries have an internal mechanism that stops voltage called Compaq Keyboard the cut-off voltage, which is typically limited to 1.67V or 10V for a 12 Volt battery. Letting a battery self-discharge to zero destroys the battery.

Discharge rate - The rate of discharge, the rate at Compaq M2000 keyboard which a battery goes from a full charge to the cut off voltage measured in amperes. As the rate goes up, the capacity goes down.
What factors determine battery life?

The duration of the battery charge is governed by five factors including:

Physical Size - the amount of capacity that can be stored in the casing of any battery depends on the volume and plate
Toshiba AC Adapter area of the actual battery. The more volume and plate area the more capacity you can actually store in a battery.


Battery History - Deep discharging, excessive cycling, age, over charging, under charging, all reduce capacity. Note charging your battery 1 time will reduce capacity as much as 15%-20% depending on your battery's Toshiba Satellite M115 S1071 battery chemistry.

When does the battery begin to lose life?

A battery begins to lose life the very moment is used. Let’s clarify a little more so that we are clear with what that Toshiba PA2522U battery technically means! A new battery is NOT: a battery that was charged, connected to a device, been opened from its wrapping or chemically activated in any way. Now be very careful with any assumption you may have where a battery could
Pioneer DVR K16 DVDRW BURNER still be considered new even after it was charged, connected to a device, been opened from its wrapping or chemically activated in any way. Why?

Inside the battery itself is a system designed to produce a chemical reaction. The chemical reaction is designed for a single purpose: to create an electron flow (i.e. electricity) by which the device is powered. The electron flow is measured (or moves at speeds) Acer Keyboard in amperes, where 1 ampere is the flow of 62,000,000,000,000,000,000 electrons per second! Therefore once the chemical is activated and the flow of electrons takes place, even for a second, then the loss of power and battery degradation begins and there is no stopping it. 15.4 inch lcd panel Once battery degradation begins a battery is considered used and its natural life will deplete in a matter of time.

One note is that a battery only need be Apple A1078 Battery connected to a device or have its connectors touched to effectively create a closed circuit for the chemical to potentially activate, at which point of course the battery life will begin to deplete.