This is a qusetion About RC car power

[RedSun]

I'm a newbie on RC car, I'm short for knowledge about RC. Especial the power, I don't know how to choose a best battery for my car, even though I don't know which one is a good Rc battery. Many people told me to choose 6s lipo battery, 5s lipo battery... I don't know what's the mean of the 6s lipo or 5s lipo ,I only allow their advice.So I bought a 6s lipo battery on Tattu, the battery's Description label shows：“Gens ace 7000mAh 22.2V 60C 6S1P HardCase Lipo Battery Pack” What's the mean of 7000mAh? 60C ? 6s 1P?