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M80

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Posts posted by M80

  3. Two Port Multi Fast Charger - DC18RD

    in Makita

    Posted

    I don't understand why tool companies insist on releasing in foreign markets first, and then take a year or longer to release in the us. It seems to me they are snubbing one of their biggest consumers. And dewalt is pretty slow as well, the framing nailer was out for almost a year before we saw it.

    My guess would be they like to test their products in a smaller market than the US, before they have to commit to the amount of production required to supply the US market.

  5. Titanium Dioxide Batteries, The Future is ...coming within 2 years.

    in Power Tools

    Posted

    I wouldn't hold your breath for this. It would be great to have a tool battery with a 10,000 charge cycle life. But to recharge in 2 minutes you would need a specalized system to deliver electricty. You will never be able to do this off of a household outlet. Also, I have read of other issues that make this commerically unfeasible. 

     

     

    The vast majority of "breakthroughs" in lithium-ion battery technology are inconsequential research findings that would work on a benchtop lab scale but have no practical commercial viability. This is definitely no exception.

    In this study, they use a TiO2 anode to replace graphite. First off, this is never going to happen - graphite is the most energy dense of lithium-ion anode materials (barring silicon and lithium metal) and will not be replaced by less energy dense materials. It is a stable and well understood chemistry that has been optimized over several decades. The structure of graphite (C6) allows 6 carbon atoms to intercalate one lithium atom. TiO2 anodes can intercalate one lithium atom per TiO2 molecule. Changing from a graphite to TiO2 anode would dramatically increase the weight of the overall battery pack, which is already the heaviest component of an electric vehicle.

    There are also issues using gels in commercial lithium-ion batteries. Conventional pack designs do not accommodate gel electrodes, and there would be a host of other issues you'd run into with the electrode/electrolyte layer and processing costs. 

     

    from here: http://www.reddit.com/r/teslamotors/comments/2j55h9/the_next_generation_of_lithiumion_batteries_has/cl8koem

  8. Makita has a new brushless angle grinder

    in Makita

    Posted

    Here are some links.  

    http://www.makitatools.com/en-us/Modules/Tools/ToolDetails.aspx?Name=XAG03M

    http://www.makitatools.com/en-us/Modules/Tools/ToolDetails.aspx?Name=XAG03Z

    http://youtu.be/vHQ_3hWZ6Yg

    http://www.homedepot.com/p/Makita-18-Volt-LXT-Lithium-Ion-Brushless-Cordless-4-1-2-in-Cut-Off-Angle-Grinder-Tool-Only-XAG03Z/205623191

    HD is the only place I can even find it listed outside of the Makita site. And it is listed as "out of stock online". If anyone see it actuall for sale anywhere please let me know. I've been dying for Makita to release a brushless grinder. And with the 5.0 batteries being released in November, I will be buying myself some early xmas presents.

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