This high-powered portable power bank is down to just $74 right now This beefy battery from Anker, which can keep all your gadgets charged while traveling, is on sale for its lowest price to date. | Image: AnkerAs a power-hungry tech journalist, I’m constantly on the lookout for good bargains on portable power to keep my devices charged while I’m traveling for work. So, I snapped up Anker’s 24,000mAh 737 Power B…