LiPo Battery Power Source with Switch (5V DC)
If you have a compact space but need to power a lot of lights, using a high-density LiPo battery is the best way to go, and with this compact little power supply, you can use a wide variety of sizes of LiPo battery (depending on your available space) to power your lighting setup. This power supply also includes an on/off switch that can be mounted on the outside of your model, so you can easily turn power on and off.
This power supply has been tested with LiPo batteries from a several manufacturers, including Adafruit, HobbyKing, and SparkFun. You can order batteries and chargers separately from one of these suppliers no matter where you live in the world, and they will work with this power supply.
For all of the specifics, including direct links to the batteries and chargers themselves, click here to read the knowledgebase article on our User Forum.
Which Battery Size?
So which battery size should you buy? It depends on how much room is available inside your model. Many of the approved batteries are made with a flat configuration, which makes them ideal for use under vehicles or in tight spaces. Other battery configurations use cylindrical batteries-- if you have room inside your model, these batteries will keep your model running longer because they are available with larger capacities.
LiPo batteries are listed in terms of their capacity, measured in milliamp-hours (mAh) or amp-hours (Ah). In general you should buy the largest-capacity battery that will fit inside your model.
It is difficult to determine the actual run-time of any specific lighting configuration using a specific battery, but here are some guidelines that may be helpful:
- If you have been powering your model using our USB cable and a rechargeable USB battery power bank, you can compare the capacity of the power bank (which will always be listed on the back of the power bank) to the batteries on our approved list. USB power banks use the same measures of power capacity as the LiPo batteries above (mAh or Ah), so if you know how long a particular USB power bank keeps your lights on, you will be able to make a direct comparison to the LiPo batteries above.
- In general, AA batteries (also called LR6 batteries) have a capacity of between 600mAh (NiCd chemistry) and 2700 mAh (alkaline chemistry). This means that if you have used our 3AA battery pack to power your lights, you are getting between 600 and 2700 mAh of power from that pack.
- In general, AAA batteries (also called LR03 batteries) have a capacity of between 800mAh (NiMH chemistry) and 1200 mAh (alkaline chemistry). This means that if you have used the LEGO Power Functions AAA battery box (part #88000), you are getting between 800 and 1200 mAh of power from that pack.
Only Use Approved Batteries!
We strongly recommend using one of our tested batteries. We have not tested other batteries, and some batteries use the same plugs but have different polarities, which means that while you may be able to physically connect a battery with reverse polarity to our SEED08 supply, reverse polarity will damage the battery and charger, and may create a dangerous situation where the battery may catch fire or explode. We are not responsible for outcomes or any damage that arises from the use of a battery not listed in the list here.