“Small. Portable. Inexpensive. Works surprisingly well on my 3cell 3200/30C Gen2 Spektrum Lipo batteries. For some reason powering this from my old computer's USB port was slow. However, charging from a decent USB brick was several orders of magnitude faster. Slow charge so it won't cook your Lipo. LED light on it is bright and changes colour and blinking to indicate where the charge is at.”