TL;DR it came a spark and its dead, do i need a new battery or can something els be at fault too ? ------------------------------------------------------------ So i think i *** up, but how bad ? i got a Suzuki savage 86' i bought some years ago, whenever i took out the battery (for the winter)...

I have a 1987 Suzuki savage ls650 and would like to get it repainted. I don't think it matters what it looks like but the tank has a big area where the gas ate to the metal and its rusted bad. I first thought about only painting the tank and finding the original color but the front fender is...