BatteryCare is a free battery monitoring utility designed to optimize the usage and performance of the modern laptop's battery. It monitors the battery's discharge cycles and helps increasing its autonomy and improving its lifetime. It also provides detailed information about the battery, such as the wear level, temperature, charge capacity and more. Additionally, it offers several power plans to help you choose the one that best suits your needs. Finally, BatteryCare offers a range of useful tips and tricks to further extend the battery's lifetime.
Battery Care shows a fairly accurate percentage of battery usage on a laptop, while Accubattery shows 112% health (100% usage) for a smartphone battery with a history of heavy use for 1 and 1/2 years, which is ridiculous. since the battery doesn't last even a day with very moderate use.