Sure, there are already a handful of options out there for extending the life of your iPhone / iPod battery, but since when have we been ones to gripe about a little competition? Kensington has just introduced a standard and miniature version of its Battery Pack and Charger for iPhone / iPod, which unsurprisingly provides juice to your device's internal battery and can be recharged simultaneously. As you could likely guess, the only differences between the two contraptions are the size, price and battery life; the 0.22-pound standard model extends play time to up to 100 hours (music) / 6 hours (talk), while the even tinier mini version livens things up for another 30 hours (music) / 3 hours (talk). Each is available now for $69.99 / $49.99.

Whether in the form of compressed images spun from disk or received over the air, portable video is a battery killer. Toss in a bit of WiFi and Bluetooth wireless to grind modern handhelds to a halt in just a few hours. This unfortunate truth makes sad chunky slabs of plastic and lithium polymer a must for those of you in need of some extra go-go juice. The Princeton PMB-BP18 is a 75-gram external battery pack capable of re-charging any portable USB device such as cellphone or iPod when away from the mains. What's more, Princeton touts the device's ability to charge the typical Japanese cellphone (via accompanying au and DoCoMo cables) twice before the PMB-BP18 external battery requires a refill. Sorry, that's an adjustable stand, not the backside of an LCD you're looking at, which somehow manages prop up your phone or mp3 player for viewing without the device sliding into your lap. Available now in Japan for ¥4,980 or about 44 US bucks.