This is a Polymer Lithium Ion battery charger based on the MAX1555 IC. This charger uses either USB bus power (MAX1555 internally limits this to 100mA) or 2.1mm center positive wall-wart power (MAX1555 internally limits this to 300mA). Current is automatically reduced to a trickle when charging is complete. Cheap, easy to use, and flexible, this board serves as a great demo board for the MAX1555. This charger is a 'must have' for quick and clean charging of Lithium Polymer chemistry batteries.
Check out thisiPhone Charger!
Features:
- Intelligent IC monitored charging - Constant current/Constant Voltage
- Do notuse this charger to charge NiMH, NiCd, or any other battery type
- Comes fully assembled and tested
- Single Cell Charger
- Requires 3.7V to 7V(max!) Input
- MAX1555 will automatically choose the wall-wart charging if both USB and barrel jacks are connected to power
- Separate header for external power in
- Separate headers for battery and load system so batteries don't have to be removed for charging
Documents:
REPLACED BY THE NEW VERSION AS BELOW:
If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The USB LiPo Charger is a basic charging circuit that allows you to charge 3.7V LiPo cells at a rate of 500mA or 100mA per hour. 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, selectable solder jumper for 500mA or 100mA charging current, external LED footprint, USB input, mounting holes, and various holes for your own connectors. We include a single JST-tpye connector which connects directly to our LiPo batteries. The connector comes unsoldered, so you can use it or not.
There is also a 'SYS OUT' which allows you to connect the charging circuit directly to your project so you don't need to disconnect the charger each time you want to use it.
Documents:
New version to replace the old one:
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