AGM battery analysis ?
There appears to be concensus that a small AGM battery is the least complicated and most cost effective option for E dependant Ignitioin & FI backup. How should you confirm battery fitness for defined service/mission ? Some suggest HF battery tester, some say drain the battery to 10 volts with a light bulb load and measure time. Is there a device or routinely administered protocol to know if battery #2 is fit for the mission ?
RV-4 fastback project in the shop