I did some digging around and found that there are some larger batteries available for the iPod classic. I have a 7th Generation iPod classic that has a dead motherboard, I am planning on repairing it myself but as these are a pain to open I want to open the device once and be done with it. Meaning I want to mod it with an IFlash Quad. I saw on iFlash's website a diagram of which batteries fit with each model and case size. I am seeing some things on eBay and Amazon for a 3000Mah battery but I am not sure of the fit of the quality of the battery. I have had a few too many scares with electricity almost starting fires in the past 6 months. Has anyone done these mods with a 7th generation SLIM iPod classic and a flatter 300MAh battery?