Rock solid 18650 batteries
Used in several things around the house. Originally bought for a 200w Sigelei vape mod. I have used these the batteries constantly, vaping during a 10 hour work day and then into the evening. Never went below 65% charge. 3200 milliamp hours is more than sufficient. Liked the performance so tried them in my headlamp, which also uses 2x 18650 batteries... ...bought several more. Have been using in a few other vape mods and handheld flashlights, with and without an external charger. No issues whatsoever. Very reliable batteries with impressive output ampacity!