Shopping Guide

The current charging and discharging of a Apple A1175 battery is measured in C-rate. Most portable batteries are rated at 1C. This means that a 1000mAh  battery would provide 1000mA for one hour if discharged at 1C rate. The same Dell 1521 battery discharged at 0.5C would provide 500mA for two hours. At 2C, the [...]