Are the x7s okay to use on a slim battery? I know the general rule of thumb is nothing below 2.5 ohms on a slim battery, so I won't try the 2.2 - 2.4 ones, but would the 2.4 - 2.6 x7s be okay? I just wanna make sure I'm not going to make a noob mistake and kill a battery or something. 
