All other companies aren't manufacturing batteries. Only Sony, Samsung, LG, and Sanyo make their own batteries.
If those aren't available, the Sony VTC5A, LG HE4, or Samsung 25R are the next best thing. If you're using 18650s in a regulated device, your best bet is the Samsung 30Q, Sony VTC6, or the LG HG2. Which batteries should I use, and where should I buy them?
