In the long run, it will buy itself back! No more $ on batteries.
I have uesd this battery for about 3 or 4 months. I got it in Chi Town 05'. The hopper man (Dave) put alot of effort in to this battery set up. I have had no probs what so ever in the time that I have been using it! I have probably saved around 30 bucks so far! Make your Halo happy, and get one! You will be happy that you did.