Questions tagged [battery]

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1answer
81 views

How do I run the Lego Technic V6 engine using a Lego electric motor?

I am not into Lego, don't know anything about it, so I will try to be as specific as possible. My goal is to spin the Lego Technic V6 engine (preferably at some realistic RPM's like thousands). ...
6
votes
0answers
125 views

Replace Battery in LEGO Dino Attack Light-Up T-Rex Head?

Is it possible to replace the battery of the LEGO Dino Attack T-Rex heads? There's a button on the top of the head that makes the eyes and tongue light up red. There doesn't seem to be any obvious ...
7
votes
1answer
97 views

Can anyone identify this remote control and receiver?

Does anybody have an idea where this remote control and receiver are originally from:
0
votes
0answers
248 views

EV3 low battery communicate right after startup

I just bought EV3 and started having battery problems. I am using 6 NiMH 1.5V batteries for my EV3. They lasted for around 10 minutes of work and went flat (that's what EV3 kept saying but the ...
8
votes
1answer
154 views

Classic 9V battery box current limiter?

Recently I disassembled a classic 4760c01 Electric 9V Battery Box Small Complete Assembly to see what was inside. Battery Box: Disassembled: In the switch component, we find what appears to be a ...
6
votes
2answers
2k views

9V Battery instead of PF Battery Box

I want to use the PF Light Unit in a small MOC. The battery box contains six 1.5V batteries and is too large. How can I use a regular 9V block battery to power the lights (and possibly other 9V ...
4
votes
1answer
369 views

Connecting LEGO WeDo USB hub to portable Power Bank

Is it possible to connect the LEGO usb hub from education WeDo series to a portable power bank for power? WeDo USB Hub Portable Power Bank
2
votes
1answer
1k views

EV3 with NiMH batteries

Could I use 6 NiMH 1.2V batteries and keep pressed the small black circle in the battery compartment in order to adjust the battery gauge and low battery alarm?
6
votes
2answers
2k views

What are the differences between NiMH and Alkaline batteries for the EV3?

Currently I am using six rechargeable batteries for my Lego Mindstorms EV3. A few seconds after I start a motor the EV3 gives a notification that that the battery is low. I know that good batteries ...
5
votes
1answer
503 views

Battery Acid Dust Issue

I was recently digging through some old boxes looking for old LEGO bricks I had as a kid. In two of the boxes I found old double A batteries that had busted (the boxes were in a building that has got ...
9
votes
2answers
3k views

Battery for Trains

For those who have tried, which one is a better option: Rechargeable Battery Box and Transformer/Charger 10VDC ($50 + $25) or AAA Battery Box and a lot of AAA batteries ($13 + ?) Obviously $75 is ...
8
votes
1answer
2k views

Power Functions battery box and receiver limits

What combination of motor/Receiver/battery boxes are possible/supported? example: 2x XL motors, 1x M Motor, 1 light using 1 receiver and 1 battery box.
8
votes
1answer
2k views

Can 10153 9V train motor be powered by the Power Functions Battery pack?

I am currently making the switch to Power Functions with my Lego Train collection and am wondering if I can power the old 9v motors that I used with the metal rails, with a battery box from the power ...
8
votes
1answer
2k views

Adapting charger for NXT 9798 battery

I have an old style 9798 NXT rechargeable battery pack 7.2V 1400MnAh, but no charger. Can I adapt a spare non lego 9v 200mAh charger for this? Or is voltage too high? can anyone read the output ...
11
votes
1answer
333 views

How much depth does the NXT battery pack add?

The NXT rechargeable battery pack does not fit flush with the back of the NXT brick like the battery cover (used with 6xAAs) does. I don't have the battery pack (yet), so I was wondering how much ...
17
votes
2answers
8k views

Is it possible to change the battery in a 54604 light brick?

I got 4 of these in in a bulk lot of Lego, but the lamp is getting quite dim in a couple of them. Is it possible to change the battery in a 54604 light brick? It looks like the brick should open, ...