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Feb 17 2009

Life of your laptop battery, sth you should know

Published by sunvalley at 4:31 am under Uncategorized Edit This

We want to own long life laptop battery, so that Laptop Accessories we can take our laptop everywhere and no need to worry about the laptop powering off. But how much do you know about the life of your laptop battery? Today we will show all the secret.

Individual Usage Patterns

Using your battery, even only once, will initiate battery degradation.
Acer PA-1700-02 AC Adapter Battery degradation the eventual loss of battery life begins when a user activates their battery (even only once). Furthermore once battery degradation begins there is no stopping it! Activating a battery can be done by charging a battery, connecting a battery to a device, opening a battery
Pioneer DVR K16 DVDRW BURNER or any other actions that would chemically activate the battery! The reason why is because connecting a device for example to a battery creates a closed pathway through which current and the electrons flow through the device to the positive electrode. At the same time, an electrochemical reaction takes place inside the batteries to replenish the electrons. The effect is an electrochemical process that creates electrical energy.

Beyond that first cause in battery degradation there is very little a person can do to speed up the degradation except for the following: use the battery. That is a long-winded way of saying that if you use Dell K051125X keyboard you will lose it!

I do not mean to say never use your battery – that is not the point – in fact how silly would it be to buy a battery and never use it! The fact of the matter is is that if you were to buy a battery and store it for say Apple A1078 Battery 5 years there is a good chance that it would not perform to spec for you because of its age.

If you buy a battery to use in your PDA or other mobile device then of course use it but be aware that by using your battery you are consuming its natural life. The battery was made to be used, to be consumed, and to power your device. So, what we as battery users complain about (short battery life) is not a necessarily a bad battery or a problematic battery (not including potential battery defects) but simply the designed life Toshiba Satellite M115 S1071 battery cycle of the battery.

Before we move to the internal technical factors that affect battery life it is well to point out that using your battery as the primary source for powering your device’s accessories will deplete your batteries capacity faster.

Internal Technical Factors

As pointed out above a battery over time degrades and eventually stops working, this is no surprise, but why this occurs is really a fascinating yet technical process. The reasons are complex issues that are way beyond user control and are wholly contained within your battery and within your device! As we will see these issues (declining capacity, increasing internal resistance, elevated self-discharge, and premature voltage cut-off on discharge) do more to cause Battery Degradation and Power Loss than your typical Acer Keyboard portable device owner could ever do.

Declining Capacity

Declining capacity is when the amount of charge a battery can hold gradually Toshiba PA2522U battery decreases due to usage, aging, and with some chemistry’s a lack of maintenance. PDA batteries, for example, are specified to deliver about 100 percent capacity when new but after usage and aging a pda battery’s capacity will drop. This is normal. If you are using a pda battery (or any lithium-ion or lithium-polymer battery) when your battery’s capacity reaches 60% to 70% the pda battery will need to be replaced. Standard industry practice will warranty a battery above 80%. Below 80% typically means you have used the practical life of a battery. Thus the threshold by which a battery can be returned under warranty is typically 80%.

Loss of Charge Acceptance

The loss of charge acceptance of the Li‑ion/polymer batteries is due to cell oxidation. Compaq Keyboard Cell oxidation is when the cells of the battery lose their electrons. This is a normal process of the battery charge creation process. In fact every time you use your battery a loss of charge acceptance occurs (the charge loss allows your battery to power your device by delivering electrical current to your device). Capacity loss is permanent. Li‑ion/polymer batteries cannot be restored with cycling or any other external means. The capacity loss is permanent because the metals used in the cells run for a specific time only and are being consumed during their service life.

Internal Resistance

Internal resistance, known as impedance, determines the performance and runtime of a battery. It is a measure of opposition to a sinusoidal electric current. A high internal resistance 15.4 inch lcd panel curtails the flow of energy from the battery to a device. The aging of the battery cells contributes, primarily, to the increase in resistance, not usage. The internal resistance of the Li‑ion batteries cannot be improved with cycling (recharging). Cell oxidation, which causes high resistance, is non-reversible and is the ultimate cause of battery failure (energy may still be present in the battery, but it can no longer Toshiba AC Adapter be delivered due to poor conductivity).

Elevated Self-Discharge

All batteries have an inherent self-discharge. The self-discharge on nickel-based batteries is 10 to 15 percent of its capacity in the first 24 hours after charge, followed by 10 to 15 percent every month thereafter. Li‑ion battery’s self-discharges about five percent in the first 24 hours and one Compaq M2000 keyboard to two percent thereafter in the following months of use. At higher temperatures, the self-discharge on all battery chemistries increases. The self-discharge of a battery increases with age and usage. Once a battery exhibits high self-discharge, little can be done to reverse the effect.

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