I have a Dark impact 6900 with MM 6900. I used to run it with NiMh 3600 battery but they really suffer to handle the power. So I swaped to Lipo Battery and not heat problems. I use T plugs, sliper clutch and after 10 runs, no heat problems or melting diffs. Remember that changing to Li-po the DI becomes a missile!! 45miles in just 2 secs!!!
