I øvrigt har i hvert fald 36V LiFePO4 DeWalt indbygget akkumulator intelligens:
Mini-HowTo - Disassembly of a DeWalt 36v Battery:
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Citat: "... Here is a close-up view of the balance connectors. There is one on each side of the pack. ... Once the 2 wires are de-soldered, the entire module can be lifted off the battery pack. Here is the underside of the charger module. You can see the red and black power leads, a temperature sensing probe and the 2 balance connectors. ... Here is a close-up of the A123 Designation, Logo, Part Number and date of manufacturer. ..."
13 a123 Systems LifeP04:
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A123 Worlds Smallest VS. "Strongest" 12V Jumpstart battery:
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Electric Dragster with A123 Li-Ion Pack Sets Record:
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T-Rex 600 A123 8S (8S=8 celler i serie):
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Elcykel laver sorte mærker på asfalt: X5404 Crystalite Burnout 66v A123 50 Amps:
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The Killacycle & Scotty Pollacheck 7.82 @ 168 MPH:
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Killacycle New World Record 155 MPH!:
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Søg f.eks. på: dewalt 36v A123
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Sikkerhed:
LiFePO4:
Nail penetration testing A123 Li-ion:
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September 21, 2008, LiFePO4 Batteries: A Breakthrough For Electric Vehicles:
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Citat: "... Here?s a list of all the advantages of LiFePo4 batteries:
* Safe technology ? will not catch fire or explode with overcharge ... * Does not suffer from ?thermal runaway?
* Can be used safely in high ambient temperatures of up to 60C [Celsius] without any degradation in performance ... * Can be safely rapidly recharged ? when fully discharged can be brought to a state of over 90% fully charged in 15 minutes ..."
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Standard Li-Ion:
Exploding Laptops on Good Morning America:
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Nail penetration testing Standard Li-ion:
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Modify Li-Po Battery Nail Penetration Test:
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Lithium Polymer Battery Explosion's (liposack):
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Omtale:
- sep 2008 Fremtidens mobilbatteri er med litium-jernfosfat
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Citat: "... LFP-producenten A123 leverer blandt andet til [nogle produktlinjer!] Silvan-klassikere som Dewalt og Black & Decker, og også håndværktøjer fra Bosch får kraft fra LFP-batterier. ... »De kan simpelt hen tåle mere "mishandling" og hård opladning. Hvor andre materialer bukker under for mekanisk stress og "krakelerer" efter omkring 500 cycles, så kan LFP angiveligt klare mere end 2.000-3.000 ladecycles, før det giver op,« siger Per Jørgensen Møller. ..."
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Nyeste LiFePO4 udvikling - kan vistnok ikke købes pt.:
- mar 2009, Gennembrud i batteriforskning giver lynopladning på få sekunder:
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Citat: "... Derfor valgte de at arbejde videre på en anden type, nemlig lithium-jern-fosfat blandingen, som har langt bedre termiske egenskaber og derfor kan belastes hårdt. Desuden er den billigere og mere miljøvenlig. ... Dermed bliver lithium-jern-fosfat batterier med ét slag en brugbar teknologi til elbiler.
Det bedste er, at de materialer, der er i brug, er de samme, som industrien bruger på lithium-jern-fosfat batterier i dag. Det er kun fremstillingsprocessen, der ændres. ..."
11 March 2009 Lithium batteries charge ahead. Researchers demonstrate cells that can power up in seconds:
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Citat: "... That seemed to be the case for lithium iron phosphate (LiFePO4), a material that is used in the cathode of a small number of commercial batteries. But when Ceder and Kang did some calculations, they saw that the compound could theoretically do much better. Its crystal structure creates "perfectly sized tunnels for lithium to move through", says Ceder. "We saw that we could reach ridiculously fast charging rates." ... The authors helped the ions by coating the surface of the cathode with a thin layer of lithium phosphate glass, which is known to be an excellent lithium conductor. Testing their newly-coated cathode, they found that they could charge and discharge it in as little as 9 seconds. ..."
/Glenn