LilyPad LiPower

Replacement:DEV-11260. The new version of this board swaps the NCP1400 out for the NCP1402. Don't worry, the new board works just like the old one! This page is for reference only.

A small, but very mighty power supply. This board was designed to be as small and inconspicuous as possible. The nice thing about LiPower is the ability to use rechargable Lithium Polymer batteries. These batteries are smaller, flatter, and last much longer than a AAA battery. Attach a single cell LiPo battery, flip the power switch, and you will have a 5V supply to power your LilyPad network. Good up to 150mA. Short circuit protected.

This board has a JST connector, which will connect to our JST terminated single cell 3.7V LiPo batteries. It also has terminals for charging the LiPo battery with one of our LiPo chargers.

LilyPad is a wearable e-textile technology developed by Leah Buechley and cooperatively designed by Leah and SparkFun. Each LilyPad was creatively designed to have large connecting pads to allow them to be sewn into clothing. Various input, output, power, and sensor boards are available. They're even washable - but be sure to remove the battery!

Note: A portion of this sale is given back to Dr. Leah Buechley for continued development and education of e-textiles.

  • 18mm outer diameter
  • Thin 0.8mm PCB
  • LilyPad LiPower Sticker Sheet PDF
  • All LilyPad Product Sticker Sheet PDF



Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • Minerva / about 11 years ago / 1

    Have you considered changing the boost converter to a more capable chip such as the LT1302, so you can get 500+ mA? It's easy to hit the 150mA limit, say with an Arduino and an XBee Pro and a GPS and a few LEDs, and if you try and draw excessive current the boost converter voltage will drop off, potentially creating strange results that are hard to diagnose, especially for beginners.

  • bombonlani / about 11 years ago / 1

    How can I disconect the battery from the LilyPad LiPower? I don't know if there is a special way to do it, because I don't want to break it.

  • Member #168968 / about 12 years ago / 1

    Hey SF, the dimensions above state this part is 18mm outer diameter, but the photo shows it being at least 35mm. I take it the photo is the accurate depiction? Thanks.

  • thisupend / about 13 years ago / 1

    hey! this is more compact and cheaper than the single cell lipoly charger. nice!

    • Luca Bertini: I have the same question...
      how can i connect C terminal to a charger?

      After a quick peak at the schematic, it looks like the C terminal is only a connection to the battery terminal through a diode. What this means is that you could use the pin to charge a LiPo provided that you have a charging circuit supplying the power. This board only has a regulator, NOT a proper charging circuit.
      You could use SparkFun's own LiPo USB charger:
      or make your own using the MAX1551/1555 (which is basically what's happening on the charger I mentioned.)
      Hope that helps. Remember to always use care with LiPos.

  • Luca Bertini / about 13 years ago / 1

    I have the same question...
    how can i connect C terminal to a charger?

  • IFF / about 14 years ago / 1

    What is the function of the C terminal???
    Can I use it to charge my battery as Leah says

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