Olight m30 , m31 what batteries to use?

Gto19

Newly Enlightened
Joined
Sep 13, 2010
Messages
14
Location
California
Hi guys

I just bought a m30 and m31 I know they can use cr 123 throw away batteries or 18650 rechargeable batteries. is there a differance in power ? I really like the fact that 18650 can recharged And I already have a charger So I'll probably go with 18650 . What brand should I buy ? I see tons of them on eBay



Thanks
 
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