RC Report in the November 2007 issue ran some amperage consumpsion test on the ignition module on the new Zenoah G-20EI. Thats the electronic ignition G-20. That moduale consumed 2180 MA at 5000 rpms. That will kill a 1100 MA batt in no time. As soon as the threshold for minimum votlage required for spark to occur is met, the engine dies. At what voltage that is, I don't know. Charge up your batt and put a volt meter in parralell with the module input voltage and see when it quits. C&H ignition 307-857-6897 sells a $80.00 replacement ignition system for that engine , the CH-RCEXL, that only consumes 308 MA at 5000 rpms. Call them and see if they make the a system for your engine using that same module. Your only other option is to use a much larger capacity battery, which will also weigh more and probably cost atleast $40-50. Due the voltage dropoff test and let us know. Rick