The best Prime Day tech deals under 50

Smaller yet useful tech accessories -- batteries, cables, phone cases and so on -- are what keep the big ticket items going. And Amazon's Prime Day is a good time to stock up on them. Only problem is, not everything on Amazon's site passes muster, and the cheaper stuff can be particularly questionable. Luckily, we've tested plenty of these devices for one buyer's guide or another, so we think stuff picked from this list should serve you well. Here are the best Prime Day Tech deals under 50.