I carry one in my "rail bag", to be honest mine isn't that heavy. The charge lasts for months as well.Thank you. So more space and weight (12ozs) to carry and I note it takes 10 hours min to recharge. (It ain't going to be left plugged in overnight in this household) So I'd probably end up with both the phone and the battery pack flat knowing me. An orange and white piece of card seems more convenient.