NewerTech’s dual-bay MacBook (and MacBook Pro, too) battery charger / conditioner is most certainly tailored for the authentic road warrior, as it allows users to “conveniently charge two batteries one after the other, or charge one battery while conditioning a second one.” The device reportedly extends the maximum life and effectiveness of your batteries by doing the conditioning for you, but we’re a bit bummed to see that it only charges the second Li-ion “when the first battery is done charging.” Notably, NewerTech also seems to offer the device for owners of PowerBooks of days past, but the latest rendition will run you $149.95 for the convenience. Another shot after the break.