li-ion 18650's are shaped like a really big AA and look like one if you are just looking at a pic on the interwebs. they aren't the same though as they are almost twice the size and a different voltage as Gerbs said.
li-ion 18650's are shaped like a really big AA and look like one if you are just looking at a pic on the interwebs. they aren't the same though as they are almost twice the size and a different voltage as Gerbs said.
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