The PowerMonkey Discovery lithium-polymer battery will keep your USB gadgets juiced on a long hike and makes a handy source of back-up power for emergency calls.
The sleek aluminium case houses a 3 500-mAh battery, which will recharge an iPhone twice, standard mobile phones around four times or give MP3 players up to 120 hours extra playtime. The 107-gram battery pack is also compatible with e-readers, sat navs, handheld games consoles, portable GPS systems and more.
Pack piles of power in one pocket. R699 from Due South, www.duesouth.co.za.