Hey I was wondering if anyone here uses rechargeable 9v batteries? I don't like going through my 9v batteries like I do sweet tart candies, so I wanted to get something I can reuse. I was thinking of picking some up to be more eco friendly, but I haven't found to many reviews out there. So I thought of the next best thing. Ask my forum buddies about it. I would be using them with my e-trigger and Rap4 Box Mag. Oh I also was wondering if the 175mAh, 230mAh, or 300mAh means anything to?