Okay, so I am doing a stupid project. Lets say I have a small motor that I am going to be using as a generator. It can output up to 350w at 24vdc. I need something that can take ANY INPUT voltage dc and output it to 14.2v dc to charge a lead acid battery. I bought 2 boost converters off of ebay, but it's output is dependent on the input. (i.e. I applied 12.3v and it output 16.3 and i adjusted it down to 14.2v. I then applied 20v and it putput 20v??) Can someone PLEASE help me find something that can handle up to 24vdc 350w, input but output a constant non-input dependent voltage?