Depends which battery you are comparing it to. Compared to a Samsung 25r it does last longer but not a whole lot for me at least. Only 400more mah. If it an lg with 1500mah then it'll be a really big difference. I mostly got it for the 40 amp rating. I like it though. Just don't wanna spend $10 a battery when I already got 8 18650's that are going strong. Gonna slowly get a couple more 20700s though.