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14

There's a YouTube video which explains how you can replace the battery in that light brick. You can also find the owner's explanation on the Eurobricks forums. Quoting from that site: What you'll need: ExoForce Light brick (obviously) A small screwdriver (or other item with a long, thin shaft) (my s'driver was 2mm (0.07 inches) thick) A ...


13

Part# BB0054 - Electric, Train 4.5V Battery Car Roof. (But Light Gray in color.)


9

The present line of battery boxes all provide 800mA of current and have overload protection to ensure that this level is not exceeded. Here's what the LEGO website has to say about powering motors: As a rule of thumb, you can drive 2 Power Functions XL-Motors, 3 Power Functions Train Motors or 4 Power Functions M-Motors at the same time from one Power ...


9

NiMH batteries only provide 1.2V per cell whereas Alkaline batteries provide 1.5V (nominal values). This means that new/fully charged batteries will provide a total of 9V for Alkaline and 7.2V for NiMH. The EV3 is programmed to show low battery somewhere around 6.2V and turn itself off around 5.5V. There is no option a available to tell the EV3 the ...


8

The short answer is about 150mA. Electrical Characteristics From the limited testing that I've done, the component you pointed out appears to be a positive temperature coefficient thermistor. Here's how Wikipedia describes their use as current limiters: When first connected to a voltage source, a large current corresponding to the low, cold, ...


8

Most Power Functions pieces will run in classic 9V mode. The IR receiver can't, but motors and lights can. A hacky solution: Many people have done this by cutting up an extension wire, and connecting the two outer cables to their power source of choice. From: Lego PF Hacking – Wire Hacking GND – ground wire – Always connected (0V regardless of ...


8

The main benefit is consistent performance. The rechargeable battery puts out almost the same voltage until it's almost flat, and whatever current is required with little voltage drop. Disposable batteries have more voltage, but cheap ones can't supply much current. Expensive ones can supply the current, but cost more. You'd be lucky to get 5 sets of those ...


8

In short, yes it's perfectly safe to run your old 9v motors from your Power Functions battery box. This excellent online reference has a lot of information on various LEGO motors. Both the old 9v train motor and the Power Functions train motor are listed. The information on the site shows that the characteristics of the two motors are very similar with the ...


7

Taken from the additional notes of this bricks Bricklink catalogue entry. This item takes one CR927 3V Lithium battery. A very tiny flat screwdriver is needed to push the little clips to open up the assembly. I occasionally use the minifig-scale Axe, Crowbar or Screwdriver to pry plates, tiles and other bricks. If you don't have a screwdriver ...


6

It adds the same thickness as a studless beam indeed, or 8mm / 20 ldu. (This is true for the grey 9VAC battery, but I suppose it holds for the white 10VDC one as well)


3

Bionicle manas set 8539. Top part from your foto. Bottom one.


3

It's very unlikely to be lead, smaller batteries don't use it. If the batteries were old rechargables they might contain cadmium (NiCd batteries). Most likely what you had was a disposable AA battery which will be an alkaline cell. As you'd guess, you can neutralise that with acid. But not a strong acid - you don't want to dissolve away the metal parts of ...


3

Obviously, if you want to use the train a lot, you will want to use a rechargeable option. You didn't explicitely address this in your question, but even with AAA batteries, you can either use disposable batteries or rechargeable ones. The cost of using disposable batteries can very fast become prohibitive, but rechargeable ones tend to cost more upfront (...


2

The two batteries and chargers are very different, in that the new one is 10V DC whereas the old one is AC (while it's supposed to be 9V, I think the transformer was actually 10V too). As it's AC, the polarity doesn't matter, but I don't think using DC current is recommended (even if in theory the rectifier circuitry in the old battery should be able to ...


2

Check out Philo's pages for details on Power Functions: http://www.philohome.com/pf/pf.htm Basically, a Powerfunctions cable consists of 4 wires: 9V, C1, C2 and GND. C1 and C2 are also 9V/GND, but output can be controlled by other equipment (such as the IR receiver or the LiPo battery box which has an output power control). The best way to power your lights ...


2

I had the same problem, so I looked at the forums, but I couldn't solve it. In fact it is a problem with the contact, so I put some aluminium foil (the same one from the kitchen) in the positive contacts, and it worked!!! Yeah, I used DuraCell...


2

Yes, it uses a standard USB charging configuration. These are designed to be universal, making power distribution easier and cheaper.


1

Assuming that your motor already has a Technic axle available, you'll need: Any Technic motor. You probably want an M motor (8883). An appropriate battery box or other power source. If you selected the above motor, you probably want the PF battery box that uses AA batteries (8881). Any Technic elements that you want to actually mount the motor onto the V6. ...


1

Unfortunately after attacking this piece from every angle with some plastic opening tools, I'm quite certain there is no non-destructive way to open this piece. I tried slipping a spudger in every seam where the plastic joins and was unable to find anywhere I could get any leverage, or even push it in more than a few millimeters. Even the jaw piece is held ...


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