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  1. Parts
  2. /Power
  3. /Power Management

USB / DC / Solar Lithium Ion/Polymer charger

OverviewPinoutWiringRelated groups
USB / DC / Solar Lithium Ion/Polymer charger — Adafruit — 390

Make your projects to go green this summer with our specialized USB/Solar Lithium Ion Polymer Battery charger! This charger is a very unique design, perfect for outdoor projects, or DIY iPod chargers.

Offers

  • Adafruit$17.50

Offers

  • Adafruit$17.50

Pinout

  • BATT

    2-pin JST battery port for a single 3.7V/4.2V lithium-ion or lithium-polymer battery, as stated by Adafruit guide/product text

    Type · powerVoltage · 3.7V nominal / 4.2V charge battery connection
  • LOAD

    load output port for powering another project while the charger shares input power and battery power

    Type · power outputVoltage · battery/load rail for 3.7V LiPo system; guide states project can be powered from LOAD output
  • USB

    USB mini-B charging power input; guide states charging can use a USB mini-B cable

    Type · power inputVoltage · 5V USB input
  • DC / SOLAR

    DC jack / solar-panel input for charging; guide states charge with 5-6V DC or 6V solar panel

    Type · power inputVoltage · 5-6V DC input; 6V solar panel recommended
  • CHRG

    low-battery/status LED output labelled CHRG per Adafruit guide text

Start wiring

3.7V nominal / 4.2V charge battery connection · battery/load rail for 3.7V LiPo system; guide states project can be powered from LOAD output

Verify supply voltage and logic levels before powering up.

Module pins: BATT. Schematik maps them to your board in the app.

Related groups

4 groups
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Power

Compare wall adapters, buck regulators, buck-boost boards, USB-C PD barrel adapters and passive cables before treating them as interchangeable power supplies.

Power · Power supplies & regulators · 24 parts

9V Alkaline Battery visual preview
9V Battery Holder visual preview
9V Battery Snap visual preview
9V to Barrel Jack Adapter visual preview

Batteries

Choose batteries, holders, adapters and boost boards without mixing voltage class, chemistry, connector polarity, charging method or current delivery.

Power · Batteries · 21 parts

SparkFun Qwiic Pro Micro BoogieBoard visual preview
9V to Barrel Jack Adapter visual preview
SparkFun 16x2 SerLCD - RGB Backlight (Qwiic) visual preview
MicroUSB Plug to 5.5/2.1mm DC Barrel Jack Adapter | Kiwi Electronics visual preview

Connectors

Sort passive connector adapters from Qwiic boards, LCD modules and microSD card adapters before assuming anything with the right plug will substitute safely.

Connectors & cables · Connectors · 28 parts

RGB backlight positive LCD 16x2 visual preview
SparkFun 16x2 SerLCD - RGB Backlight (Qwiic) visual preview
I2C 20x4 Arduino LCD Display Module visual preview
Gravity: I2C 16x2 Arduino LCD with RGB Backlight Display V2.0 visual preview

Displays

Character LCDs, SPI TFTs, e-paper modules and larger capacitive-touch TFT panels solve different display jobs. Treat display class, interface, controller, resolution, touch, refresh behaviour, storage, voltage and mounting as separate swap checks.

Displays · TFT & LCD displays · 35 parts

Parts tray full · 5 max · remove a part to add another
Type · status output
Voltage · low battery indicator fixed at 3.1V per guide text
PinPositionTypeFunctionVoltage
BATTpower2-pin JST battery port for a single 3.7V/4.2V lithium-ion or lithium-polymer battery, as stated by Adafruit guide/product text3.7V nominal / 4.2V charge battery connection
LOADpower outputload output port for powering another project while the charger shares input power and battery powerbattery/load rail for 3.7V LiPo system; guide states project can be powered from LOAD output
USBpower inputUSB mini-B charging power input; guide states charging can use a USB mini-B cable5V USB input
DC / SOLARpower inputDC jack / solar-panel input for charging; guide states charge with 5-6V DC or 6V solar panel5-6V DC input; 6V solar panel recommended
CHRGstatus outputlow-battery/status LED output labelled CHRG per Adafruit guide textlow battery indicator fixed at 3.1V per guide text