For really heavy stuff, like batteries, I'm willing to buy retail. I'm currently using the Best Buy Geek Squad version ... <a href="http://www.bestbuy.com/site/olspage.jsp?skuId=7383985&st=ups&lp=10&type=product&cp=1&id=1122654249041" rel="nofollow" target="_blank">http://www.bestbuy.com/site/olspage.jsp?skuId=7383985&st=ups&lp=10&type=product&cp=1&id=1122654249041</a> rr