Here are some new battery cases that came out a few weeks ago. These hold 4 x 18650 batteries - double what the normal battery cases hold. These also have a reinforced latch to prevent accidental openings.
THE HARD COPY:
- Can hold 4*18650 batteries
- Safe guards your battery from short circuiting and other hazards
- Light weight and compact size to better organize your battery and take it easily while in traveling
$2.94 for 2 Cases