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Found 4 results

  1. Hello All Sorry if this question was already raised! As you all know Lego Rechargeable Battery for ev3 is expensive. May I ask you if anyone tried to use 6 Li-Po 1.5v rechargeable batteries there instead of regular lithium Batteries? Ni-MH are all 1.2v , and will not work as needed but maybe 1.5 li-po would be Ok ? Brand, let say : ZNTER They can be found on ebay for $40 for 6 batteries ... or Thank you !!!
  2. Greetings! Recently I have noticed some people have made custom lipo's battery boxes like Doc_Brown I would like to know if anybody has experience with this type of thing, and how much voltage I can use without damaging motors If you know of any brands of lipo's with good ratings I could look into that would be much appreciated, also I am considering getting an SBrick and would like to know if more than 9V would damage it. Thank you
  3. My first project on the LEGO Ideas site is an Inductive Charging System for Power Functions LiPo batteries for Trains, Technic and Mindstorms. The project concept enables a train LiPo battery to be charged without manual intervention. The train stops over the charging coil. The charging coil would sit between the rails, powered from the standard charger. The receiving coil would be held between the bogies of a wagon, plugged into the charging port of the LiPo battery. The device would be compatible with use for Technic, Mindstorms and other themes, so that a robot could return to a charging station and charge itself. It might be possible for the charging and receiving coils to be two of the same device, minimising cost. This would bring LEGO products up to date with the charging of mobile phones and tablets. It may be a key technology to enable more development of Power Functions trains because it would make it easier to run them at shows. Please add your support to the project. We have 90 supporters so far, which is good for a technological project (as opposed to a populist project). Let's see if we can reach over 100 supporters, perhaps 150 in April! Even if the LEGO Ideas route is not the best route, your support adds weight to the case for pursuing another route, such as third party production or crowd funding. Thanks, Mark
  4. Hi, hope it's ok to start a new topic about this but I searched a didn't find a suitable, current thread related solely to trains. The best PF battery threads are several years old now and are mostly geared toward Technic. I'm mulling over whether to get the 8878 Rechargeable Battery Box (US$ 50) or use the 88000 Battery Box (US$ 13 and included in many sets) and then use rechargeable batteries in that. I have a young child so I don't want to use LiPo rechargeables in 88000 (because of possible safety issues) but from what I've read, Lego has protection circuitry built into their 8878 LiPo Rechargeable Battery Box. If I go with the 88000 then those 3rd generation Eneloop NiMH rechargeables seem to be the way to go. I don't really mind swapping out batteries but they only deliver 7.2v. Apparently Lego claims that their 8878 Rechargeable Battery Box delivers 7.4v so that seems to be a selling point but is it noticeable in any way? What are your thoughts on this? What do you use for your PF trains? Do you use both 8878 and 88000 with NiMH rechargeables and do you notice any performance differences between the two? Personally I'm not planning on having any monster-long trains or hills but who knows what the future has in store? Ok, thanks in advance, Joe