Nothing brings joy to a hacker’s heart like taking a cheap gizmo ... while providing automatic shutdown if the LiPo cell voltage drops below 3.2v. Below that voltage the cells can be damaged ...

For larger RC models this number may be as high as 6 cells! 3.7 Volt LiPo battery /1 cell x 3.7 volts (1S) Charging LiPo cells/batteries is not an easy task. LiPo battery obviously have a very ...

There’s a problem with LiPos, though – they have the tendency to explode when charged incorrectly. Luckily, [Paul] sent in a great tutorial on building a LiPo charger that works over USB.