If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The SparkFun USB LiPo Charger is a basic charging circuit that allows you to charge 3.7V LiPo cells at a rate of 500mA or 100mA. It is designed to charge single-cell Li-Ion or Li-Polymer batteries.
The board incorporates a charging circuit, status LED, selectable solder jumper for 500mA or 100mA charging current, external LED footprint, USB input, two pre-installed JST connectors for SYS OUT and BATT IN, and (back by popular demand) a barrel jack connector.
There is also a ‘SYS OUT’ with a pre-installed JST connector 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.
While the chip can take up to 6V for the maximum voltage, it can only take 1500mA for the max current. If you use the 6V 2A power supply as the power supply, then you are very likely to burn the chip out on the board. If you need a power supply with a barrel jack, then we recommend the 5V 2A supply.
If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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Based on 7 ratings:
2 of 2 found this helpful:
I tested it with the wall plug first and it worked as advertised so I installed it in my build. Once installed I wanted to charge it via USB and when I tried to plug it in all solder points came lose and the entire USB socket came off so I had no other choice but to use the wall plug. Too bad. I wanted to have both options but because of bad manufacturing I was left with one.
Those USB ports tend to be more resilient. I’m contacting you privately to discuss your issues. Thanks
1 of 1 found this helpful:
I have this integrated into a prototype. I have done dozens and dozens of USB insertions/removals. No problems.
0 of 2 found this helpful:
Completely my fault for not paying attention … but all of the barrel jacks on my other “redboards” will accept 7-15 volts. If I would have read either the documentation or the “6V Max” etched on the board no problem …. smoked of course in a few seconds with a 12V wall wart. :(
This charger is simple to use, and great for use with Sparkfun’s LiPo batteries that I use to power the MicroBit.
I use this in a rechargeable light source in an escape room! The wired version has worked flawlessly. One of them that was hooked up to an inductive charger burnt out. This was possibly due to the inductive system and not the charger.