Backup light and recreational primary light

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stuartv:
18650 can pack about 3300mAh. The best I've got, anyway. It does seem like I read that they have them up to maybe 5000mAh now. What do 21700 cells hold? Or maybe it's the 21700 I'm thinking of that can be as much as 5000?
Click to expand...
18650 about 3300, 21700 5000
 
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