I use the Turnigy Nanotech batteries because you can charge them at more than 1c. I usually charge mine at 2c. Great bang for the buck and with the Nanotechs you can get the ones that are 45c constant and 90c burst. I use them in both my 1/8 scale buggy on 4s as well as my Losi SCTE shortcourse truck on 3s.