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sispy

Posts: 1,579 Member Since: 11/05/08

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Nov 2 09 10:20 PM

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Higher capacity batteries

The batteries in Amateur Radio handhelds never seem to last long enough, but now a new storage material may provide the answer.
ScienceDaily reports that researchers at the Institute for Chemistry and Technology of Materials have developed a new method that utilises silicon for lithium-ion batteries.
Its storage capacity is ten times higher than the graphite substrate which has been used up to now, and promises considerable improvements for users.
Read the ScienceDaily story,
Battery Of The Future: New Storage Material Improves Energy Density Of Lithium-ion Battery
http://www.sciencedaily.com/releases/
2009/10/091029160532.htm


Thanks to George Boorer ZL3PN for spotting this item.

For the latest information about Ham Radio, Communications, Radio News, Space, Radio History...Join me in the discussion at hamchatforum.lefora.com

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measure

Posts: 14 Member Since:02/11/10

#1 [url]

Feb 12 10 2:41 PM

A replacement battery for all 4th generation models of the popular Apple iPod portable music player which look like this:


If your iPod does not look exactly like this (apart from the colour) then try choosing your model on our iPod department home page or have a look at our other iPod batteries to find one with a picture that does match your model.

The 4th generation iPod range includes the following model numbers:

  • M9282
  • M9787
  • PE435A
  • M9829
  • M9268
  • PE436A
  • M9282
  • M9268
  • M9830
This battery can be used to replace original-fit batteries with the following part numbers:
  • 616-0183
  • 616-0206
  • 616-0215

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motons

Posts: 15 Member Since:02/11/10

#2 [url]

Feb 12 10 2:42 PM

Super high capacity, long run time, external universal battery pack for laptop notebook computers and other devices. Made with high quality Panasonic Li-ion battery cells.

  • It has up to 2~3 times battery run time (153 Watt-Hour, compared to 40~60 Watt-Hour for most notebook computer internal batteries.)
  • Its universal platform works for most laptop notebook computers on the marketplace. One battery for many different notebook computers.
  • Its compact size can easily fit into a laptop/notebook carry bag.
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    hraan

    Posts: 10 Member Since:02/19/10

    #3 [url]

    Feb 20 10 10:53 AM

    Nano-sized cables made with titanium dioxide (TiO2)-coated carbon nanotubes could hold the key to developing new high-capacity batteries, report chemists in Germany and China.  
    Lithium-ion batteries are in great demand for applications from laptops to hybrid cars - but the list of requirements is long. They need to be lightweight, cheap and environmentally friendly, but also store enormous charge. 


    As lithium-ion batteries are charged, large amounts of lithium ions are held in the anode, which is typically made from graphite. When the battery is used, these ions migrate to the cathode, sending electrons through the circuit. However, graphite has a fairly low storage capacity and release rate, so finding alternatives is key to making batteries that last longer and produce more power.Carbon nanotubes and TiO2 have both been investigated for use as electrodes, but have been deemed impractical until now. 'Titanium dioxide on its own is totally unsuitable for electrodes,' says Joachim Maier of the Max Planck Institute for Solid State Research in Stuttgart, Germany, who collaborated on the research.

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    graal

    Posts: 11 Member Since:02/19/10

    #4 [url]

    Feb 20 10 10:53 AM

    Because the two compounds have interfacial contact, they form a symbiotic relationship that boosts their storage ability even further,' Maier told Chemistry World. When combined, the storage capacity of TiO2 is four times higher than usual and the nanotubes hold three times as many ions.  
    Unlike some other compounds that can fracture when repeatedly charged and discharged, the nanocables appeared reliable, showing almost no capacity loss after one hundred cycles.  
    Since the material is simple to produce and far cheaper than electrodes that are based on rare metals, the team are hoping that it can be more widely applied - perhaps for other energy storage devices such as supercapacitors.  
    'Not much attention has been paid for applying hybrid materials like this to lithium batteries,' says Vasant Kumar, who works on next generation batteries based on novel Li chemistry at the University of Cambridge, UK. 'I think this work could potentially open up many new opportunities that make use of the synergy between different materials.

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    knowleadgeable

    Posts: 18 Member Since:02/23/10

    #5 [url]

    Feb 24 10 1:03 PM

    An alternative to lithium-ion batteries--silver-zinc batteries--could add several hours to the time that laptops can run between charges, while at the same time avoiding the safety issues that have resulted in the recent massive recalls of laptop batteries made by Sony, according to Zinc Matrix Power in Camarillo, CA.

    Zinc Matrix Power of Camarillo, CA, is working on a laptop battery pack that it says could double capacity--and also not catch fire. (Credit: Zinc Matrix Power)
    The company, which received an innovation award from Intel last month for its new battery, has now demonstrated the silver-zinc technology in a laptop. Zinc Matrix plans to begin distributing test batteries to manufacturers early next year, focusing on applications in laptops and cell phones.
    In part, the gains in laptop runtimes would come because the silver-zinc batteries can store about 25 percent more energy in the same space, a result of both the chemistry and a more space-efficient flat shape, compared with cylindrical lithium-ion cells inside laptop battery packs, says Ross Dueber, president and CEO of Zinc Matrix Power. What's more, because silver-zinc batteries use a safer chemistry than most lithium-ion batteries, manufacturers could

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    knowleadgeable

    Posts: 18 Member Since:02/23/10

    #6 [url]

    Feb 24 10 1:03 PM

    Silver-zinc rechargeable batteries are not new--for example, they've been used by the Navy in submarines for years. But they've been plagued by high costs due to the use of silver, and by a short lifespan because they can be charged and discharged for only a relatively few cycles, and so have to be replaced more frequently than other types of batteries.

    Dueber says the company plans to keep down the costs with a recycling program that will allow it to reuse the silver and zinc. And it has extended the charging cycle-life to hundreds of cycles--similar to many lithium-ion batteries. One of the reasons for the previously low cycle-life is that, as the batteries charge and recharge, zinc in the cell undergoes physical changes that lead to decreasing cell capacities. The company addressed this problem by embedding zinc granules within a conductive polymer.

    The safety of the batteries in part results from the use of a nonflammable electrolyte. "It is an inherently safe technology in comparison to lithium ion," Dueber says. "The fundamental difference is we do not use a highly flammable electrolyte, like lithium ion does. If you have an internal short circuit, which has recently plagued lithium ion, it does not have the possibility of bursting into flames and exploding."

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    onthrope

    Posts: 20 Member Since:02/23/10

    #7 [url]

    Feb 24 10 1:04 PM


    Some customer ask me the question"Is Safe Using Li-ion Camcorder Battery", as there are too many event of "battery recall" at present.the following is my answer.

    There is the rare possibility that any battery can explode. Some battery designs are more prone to this than others. Being a name brand battery isn't always a good indicator that a battery isn't one of those that might possibly explode. Sometimes even name brand stuff does this.

    These things are very rare but it does happen. This is the one thing you might be concerned about when it comes to batteries. BTW camera companies buy their batteries from a company that makes batteries for the most part. The only thing you can do is to check for reports of explosions on the web. In the past there was no good way of finding out these things without making a trip to the periodicals section of a good library.

    I buy lots of aftermarket batteries. I generally try to check about a retailer since it's often hard to know exactly what batteries are being sold. If you find a dealer that is known to sell lots of batteries that don't have problems then you shouldn't have any problems.

    Like I said, I have all sorts of batteries from a number of manufacturers and I've never had any problems with explosions. I have had batteries that really weren't all that good. The worst ones I have were actually Panasonic but I strongly suspect I used a charger that was too powerful for them.

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    onthrope

    Posts: 20 Member Since:02/23/10

    #8 [url]

    Feb 24 10 1:05 PM


    The first thing a new digicam owner quickly realizes is that those AA alkaline batteries included with their camera are next to worthless. I've gotten many emails from folks who wondered if their cameras were defective because they only got 20 or so shots before the batteries crapped out. Today's digital cameras are extremely high-drain devices. The batteries must power a color LCD, a motorized zoom lens, an autofocus system, the multi-megapixel imager and the associated processing hardware. The answer is simple ... use high power NiMH rechargeable batteries. Over the last couple of years we've seen higher capacity NiMH batteries hit the market, especially in the popular AA size which is what most of the digicams use. The first cells were only 800-900mAh capacity but now we have a wide choice of cells ranging from 1500 to 2700mAh. As expected, the higher the capacity - the longer the
    FC-501 4+1 NiMH / NiCd Charger

    This is the iPowerUS FC-501 5-Channel Fast Smart Charger. It rapid charges NiMH or NiCd type AA / AAA / 9V batteries with the precision that only microprocessor technology can provide. Designed with five separate charging circuits to handle one, two, three or four AA or AAA batteries independently of each other. It can also charge one 9V type rechargeable cell.The FC-501 is called "Smart" because it uses a microprocessor to monitor each cell being recharged to make sure that it is charged to its maximum capacity. Each cell is analyzed before recharging starts. If a bad cell is detected the user is alerted by a blinking LED and that cell is not charged to protect its charger circuit from damage. During charging, the cell's voltage is constantly monitored. Using Negative DeltaV Cool Charging Technology each cell is fully and quickly recharged without overheating. Once it is fully replenished the charging current

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    lonely

    Posts: 20 Member Since:04/14/10

    #9 [url]

    Apr 26 10 10:49 AM

    Nano-sized cables made with titanium dioxide (TiO2)-coated carbon nanotubes could hold the key to developing new high-capacity batteries, report chemists in Germany and China.  
    Lithium-ion batteries are in great demand for applications from laptops to hybrid cars - but the list of requirements is long. They need to be lightweight, cheap and environmentally friendly, but also store enormous charge

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    badrra

    Posts: 20 Member Since:04/17/10

    #10 [url]

    Apr 27 10 9:31 AM

    Super high capacity, long run time, external universal battery pack for laptop notebook computers and other devices. Made with high quality Panasonic Li-ion battery cells.

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    fali

    Posts: 1 Member Since:05/20/10

    #11 [url]

    May 20 10 9:51 AM

    I buy lots of aftermarket batteries. I generally try to check about a retailer since it's often hard to know exactly what batteries are being sold. If you find a dealer that is known to sell lots of batteries that don't have problems then you shouldn't have any problems.

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    w8eeo

    Posts: 2,219 Member Since:10/04/08

    #12 [url]

    Jul 22 13 12:39 AM

    The dangers of lithium batteries

    Lithium batteries are undoubtedly popular going by their wide use in consumer products, and even higher powered models in electric vehicles.
    However they have been linked to fires, illicit drug makers and medical problems.
    The recent death of a toddler in Queensland, Australia and others injured after swallowing them, has again focused attention on the common power source.
    From January 2013 stricter regulations for the carriage of Lithium batteries by air travellers were introduced - best check with your airline for the rules.
    A battery can also be a convenient source of lithium metal used in illegal methamphetamine laboratories. Sales of larger quantities are restricted for this reason in some areas.
    International industry standards for button batteries are soon to be introduced as an urgent safety measure.
    These are likely to include strengthened consumer education about the dangers and child-restraint packaging for the cell batteries.
    Jim Linton VK3PC

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