I have a 2015 Raleigh Tekoa iE bike that doesn't have a battery set up. It is a beautiful bike, like new. I have never owned an e bike before but want to get the best possible battery set up for it. I know it had a 48 v set up 10 ah and is a 500 w motor. There are several on amazon an a few on other sites, but nothing shows the 4 prong wire coming from the frame and where it connects to the battery set up. I don't want to just order something only to have to return it or even worse ruin the electronics on the bike. I just need some advice on what battery to get and the set up to attach it to the frame. I have a picture of the wire i'm talking about attached.