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Description: If you need to charge LiPo batteries, this simple charger will do just that. It is designed to charge single-cell Li-Ion or Li-Polymer batteries. Check the datasheet below to see if it will work with your battery.

The board incorporates a charging circuit, status LED, connector for your battery (JST-type used in the batteries we carry), and a mini-USB connector. 

Note: This version uses a mini-USB cable. We also have this charger with a micro-USB connection as well.

Dimensions: 29.4x10.8mm

Documents:

Comments 34 comments

  • Connect a battery with reversed polarity and instantly acquire magic blue smoke!

    Where is the Blue Smoke repair kit you guys used to sell?

  • It would be great if this were combined with the LiPo fuel gauge board. Battery state + charging in one board would be amazing!

  • will these charge a 2 cell battery if it has a built-in balance circuit?

  • I would like to build this into a device that may be exposed to rain/snow, and this being the only exterior connector makes me wonder: Is there any danger in the micro connector being shorted when not charging, so long as everything else is protected?

  • Dumb question here: are Lithium-Ion batteries the same as lithium polymers? Will this circuit charge L-ions?

  • Its been asked several times before, noone commented yet. Can I combine 10401 (LiPo Charger Basic) and 10255 (LiPower - Boost Converter) directly? Like one box with two USB connectors and a Lipo inside, where I can connect either a computer to charge the Lipo, or a mobile to charge this. Or even connect the box to an unreliable 5v source (bicycle generator comes to mind) and have the Lipo as kind of a USV?

    I basically would connect the Lipo to both the charger and the step-up-converter, all three of them in parallel.

    Any thoughts greatly welcome!

  • Are these fine to use without batteries as well? I’m building an exhibition with a whole lot of Arduino Pro Mini’s and was thinking to use them connected to the USB ports of the computers that are connected to each one? Seems to work when I tested it - but not sure how it would be after a few days of continuous running?

    In a show I ran last year - I had these connected to a 1000 mAh Li Polly - usually I’d leave them to charge overnight then let the Arduino Pro Minis run on the battery - occasionally I’d have to leave them pluged into the computer - in effect - charging for upto 48 hours.

    One of my li polly batteries looked very swollen and puffed up at the end of this show - not sure if it was because it got left on ‘charge’ too long - or what…

    Any recommendations would be most welcome

    Cheers

  • Is this board set at a 500ma charge rate already or does it have to be set, I have a 3.7v 2200 mah battery with a 20c discharge rate so I definetly want the 500ma and not the 100ma?

  • Is the status led an on/off or a tri color operation?

  • Will this or any other of the USB chargers charge a 7.4v lipo battery?

  • I tested one of these last night with an old Nokia Battery (the exploding kind) and it seem to work nicely using an old Motorola USB charger….
    I was surprised it got really hot (the board - not the battery) for a while, as charging continued, the temperature decreased. seems logical as the battery voltage increases, less current, blah blah blah….
    it was never THAT hot, but it did raise and alarm….
    anyone think or notice the same?

  • What’s difference between this and http://www.sparkfun.com/products/10161 ?

  • Can this be made or adapted to charge multiple LI cells in series, for example to boost the 5vdc input to 12V instead of regulating down to 4.2?
    OR do you have another product that will?
    Thank you.

      1. This product will not boost 5V to 12V
      2. You do not want to charge multiple LI pacls in series unless you are very certain that they have the same characteristics including their discharge. I.e. if one pack is discharged more than the other, you’re going to run into problems. You might want to look at parallel charging instead. Hit Google :)
  • Can you hook up a LED somewhere on this to show when it is charging then LED shuts off showing when battery is charged?

  • The datasheet says:
    - Four Voltage Regulation Options: 4,20V, 4,35V, 4,40V, 4,50V
    - Programmable Charge Current: 15 mA to 500 mA
    How can I regulate that and how can I select a charge current or charge voltage?

  • Can you use this board to charge a battery while it is connected to another circuit? Like if you split the wire from the battery and connected it to this charger board and the board the battery was meant to power at the same time?

    • no need to! it has solder through joints directly behind the jst adapter on the board does that help any

    • You are looking for this:
      http://www.sparkfun.com/products/10161
      HTH

      • Thanks for the info.
        Looks like the only difference in the two boards schematics is the jumper for charging current and the two different connectors for system and batt. The system and batt outputs are both hooked up to the VBAT line though, so both boards are setup the same with the same charging IC. And actually I just noticed that this boards schematic lists the plus/minus connectors behind the battery connect as “Connected to 3.7V System”. So both boards should be able to do in circuit charging.

    • I am also curious about this … anyone know?

  • Lipo 3.7V max. rate 100 mAh?

  • Can this be used to charge a Li-ion 3.7V 800mAh (Pentax D-Li88)battery?

  • You know, just my luck they come out with a mini version right after I bought the micro. Down with Micro!

  • It’d be good if this and the Micro USB version had an “end view” picture to show the USB socket in more detail. Some people might not know if they have a cable for the Micro USB socket, or the Mini USB one.
    Edit: Also, anyone else seeing the face in picture 4? :)

  • YES! I am one of the anti-micro USB nuts, so this is good news!


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