I've spoken to Bob Wilcox and he says not to use Lithium batteries with the JetCat ECU. Bob explained that these batteries do not have the amperage capacity to adequately start the turbine and run the ECU. This was especially troublesome with an older starter motor that was a little "draggy". Bob still recomends NiCads for the ECU/starter use and going with the 3000 mAh pack if you want extra flight time before charging. Thought you guys would want to know....

Kevin