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CR123A Disposable High Performance Lithium Cylindrical Batteries Yes, better than others brands, after 4weeks it is still 4level, amazing, very giod product https://www.amazon.com/Keenstone%C2%AE-Disposable-Performance-Cylindrical-Flashlight/dp/B014ZIBBFK/ref=sr_1_38?ie=UTF8&qid=1477548656&sr=8-38&keywords=cr123a+battery