1. Get rid of the protected Li-ion battery and replace it with a good IMR... like a
"New" version AW for example, that has a MCCD of 12 amps.
Once you have that, you can fire down to 0.4~0.6Ω (depending on your personal margin of safety %... or have faith in momentary discharge values) reliably.
Might want to click on all my sigline hyperlinks... while your on a roll.