This is what makes the subs so worthwhile.All this experience and the people willing to share it.Currently the battery has now been charged via a charger I borrowed and my next move is to buy a charger which will plug into the accessory socket as already mentioned. As this won't happen until after Christmas I have some time to figure out which is the best buy.Am I right in thinking there 2 suitable, the optimate and the c.trek or something that sounds like that. Which is the recommended one.?I hope every one has a safe and happy Christmas and as I'm an optimist am hoping for a prosperous new year