Posts tagged Scientists
A sliver of wood coated with tin could make a tiny, long-lasting, efficient and environmentally friendly battery.
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Scientists claim tenfold increase in laptop battery life
Laptop and mobile phone batteries could see a tenfold boost in performance if a technology breakthrough from scientists in the US comes to fruition.
According to researchers at the Massachusetts Institute of Technology, replacing conventional battery electrodes with those coated with carbon nanotubes can drastically increase the power to weight ratio compared to conventional lithium-ion batteries.
The scientists say they produced the powerful new electrodes by alternatively dipping a base material in solutions containing carbon nanotubes with positive and negative charges to make a stable film coating.
The result is an electrode that is more porous and contains more oxygen groups, which can store a larger number of lithium ions.
According to the scientists, the energy output for a given weight of this new electrode material was five times greater than for conventional capacitors, and the total power delivery rate was 10 times that of lithium-ion batteries.
ACER TRAVELMATE C100 SERIES Laptop Battery
In addition to their high power output, the researchers claim the carbon nanotube electrodes were highly stable showing no change in performance over 1,000 charge cycles.
Although carbon nanotube production is currently limited to niche suppliers, several companies are gearing up for mass production of the material.
133 Watt External Laptop Battery Charger Runtime Up to 10Hrs
What is the run time of Exceldigital(UK)’s Laptop Battery?
Laptop Battery have two main ratings on them: Volts and Amperes. Because size and weight of Laptop Battery is limited when compared to larger batteries such as car batteries, most companies show their ratings with Volts and Mill amperes. One thousand Mill amperes equals 1 Ampere. When buying a battery, select batteries with the most Mill amperes (or Ah). Batteries are also rated by Watt-Hours, perhaps the simplest rating of all. This is found by multiplying the Volts and the Amperes together. For example:
14.4 Volts, 4000mAh (Note: 4000mAh is equal to 4.0 Amperes).
14.4 x 4.0 = 57.60 Watt-Hours
Watt-Hours signifies the energy needed to power one watt for one hour. This Laptop Battery can power 57.60 watts for one hour. If your laptop runs at 20.50 watts, as an example, this Laptop Battery could power your laptop for 2.8 hours.