SparkFun Adjustable LiPo Charger
PRT-14380
Description
The SparkFun Adjustable LiPo Charger is a single‐cell lithium
polymer (LiPo) and lithium ion battery charger. Because it’s
adjustable, this charger will be able to safely charge most of our
single‐cell batteries with ease. With its onboard charge rate
selector, you will be able to set the maximum amount of
current to charge your battery from 15mA to 500mA.
Once the board is configured for the battery, you can connect
power from either a microUSB cable or the pins below the USB
connector labeled GND and INPUT. Once power is connected,
you can install a single LiPo battery to one of the three battery
connectors, the JST connector, PTH pins marked BATT, or the
2450 coin cell holder on the back of the board. The input
voltage for the MCP73831 charger IC is between 3.75V and 6V.
To fully charge a LiPo battery, it is recommended to have a
voltage of around 5V. The charge IC will regulate the voltage
down to safely charge the LiPo battery.
Note: The switches on the Adjustable LiPo Charger come
shipped with all the switches in the ON position. Before
configuring the board, all the switches should be moved to the
OFF position.
Features
Operating Voltage: 3.75V to 6V
Adjustable Current: 15mA–500mA
Three Battery Input Options
o JST Connector
o PTH Pins
o Coin Cell Holder (2450)
Charge Status LED
Custom Charge Rate Settings
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