I've been running those in my savage flux, ERBE and outcast. I used to run the 9000mah 2S in my savage/revo, but one died on me and I wanted a little less weight. I had been running the 7200mah 2S packs in my smaller trucks because they are shorter and fit the battery trays. Then I just started using those in all my trucks. I have 8 or 10 of the 7200/7400 2S LiPo's. They do a good job for me.