Adafruit USB/DC LiPoly Battery Charger 5-12V - 3.7/4.2v cell


This Product Has Been Discontinued, This Page Is For Reference Only.

17.95 USD
$17.95 ea.

Need a USB/DC method to charge your Lithium Polymer battery? This Adafruit charger is a tidy solution!

Description [Hide]

Plug this Adafruit LiPoly charger into Any standard 2.1mm DC adapter which puts out 5 to 12VDC, or USB port and you're ready to charge. Accidentally plug in both? No problem - the charger will automatically choose whichever has the highest voltage.

It's a well thought out unit, with multiple LEDs for power & charging status and high-temperature detection that slows down the charge rate. The charge rate is adjustable between 100ma to 1.2A, ideal for most hobby-level LiPoly uses.

  • Use USB or DC power - 5 to 12V input
  • Charges one single-cell 3.7/4.2v batteries (not for older 3.6/4.1v cells) with constant current/constant voltage
  • Three indicator LEDs - green for power, orange for charging and red for error
  • Charging LED will blink when the battery is full
  • You don't have to worry about heat dissipation in the charger, even when plugging in a 12V DC power jack - thermal protection inside will slow down the charge rate to prevent damage
  • 2 JST connections so you can keep the battery plugged in and powering your project
  • Terminal block connections galore (if you don't like JST connectors) just solder in 3.5mm terminal blocks
  • Default charge rate is about 280mA, but you can easily change this by soldering in a through-hole resistor on. The chip can do 100-1200 mA charging
  • Safety timer will stop charging after about 14 hours
  • The chip supports a standard 10K thermistor, which we have stuffed as a standard resistor. You can solder in a thermistor easily
  • Lots of information in the datasheet for the MCP73861
  • Fully assembled, tested and comes with a free JST cable
  • See the schematic in Documentation tab
  • Dimensions: 40mm x 44mm x 13mm (1.6in x 1.7in x 0.5in)
  • Weight: 11.7g ( 0.4oz)

Please Note: Battery, USB cable and DC power adapter not included but are available on our site.

Documentation [Hide]

You Might Also Like [Hide]


Lithium Polymer Battery - 2000mAh (Lipo)

These are very slim, extremely light weight batteries based on the new Polymer Lithium Ion chemistry.

$12.95 USD



Looking for a portable USB device charger, like for an iPod, Zune, or similar portable electronic device? The MintyBoost is a fun kit that lets you recharge on the fly, from a pair of normal AA cells!

$15.99 USD


37 x 66mm Monocrystalline Solar Cell

This big brother of the SCC3733 is also an epoxy-encapsulated monocrystalline solar cell, but this one offers 8 volts and 44mA in a 37 x 66mm package!

$11.00 USD


PowerBoost 1000 Basic - 5V USB Boost @ 1000mA from 1.8V+

This 4A capable PowerBoost 1000 can turn almost any battery voltage below 5.5V into a steady 5.2V to power your USB devices.

$14.95 USD



The Solarbotics Arduino Freeduino Enclosure (SAFE) is a laser-cut acrylic case for your Arduino Mega. It also has the added feature that it can house an Arduino or Freeduino instead with a MEGA amount of space left inside.

$14.50 USD


Sparkfun Lithium Polymer Basic Charger - Micro USB

Simple LiPo single-cell charger from Sparkfun, with a Micro-USB cable connector

$8.50 USD


MicroUSB 1A LiPoly Charging Module

Excellent for building a portable project with a single LiPoly, and recharge it from microUSB!

$2.25 USD


5.2V 2.1A microUSB power supply with 2M cable

With a 2 meter (6.6') micro-USB connector, this power supply is ideal for powering single-board computers like the Raspberry Pi.

$5.95 USD


eSun 1.75mm HIPS filament - Blue - 1kg Spool

1.75mm HIPS filament for 3D printing. HIPS is an excellent general purpose filament with high strength and a small amount of flexibility, and less prone to warp than ABS.

$30.00 USD


28 x 13mm Traction Wheel assembly on Aluminum hub

28mm diameter x 13mm wide silicone rubber wheels mounted on aluminum hub

$3.95 USD





Remember Me

Forgot Your Password?

Don't Have an Account?
Sign Up!