Weak battery?

[67exec]

ZLong and short, as my vaping style went  from mid 30w tanks to 50-60w rda, I shelved my 75c because of weak battery warnings. My 75c is built in a silo75c running a single only 20700. Battery cutoff is stock evolv setting. I measured battery voltage at the wire just after the solder point on the battery contacts. When voltage there is about 3.4-3.6 With the mod set to 55w, I get weak battery warnings and the wattage falls off. The wire is either 16g or 18g. It's the biggest that I was able to fit between the board and the battery holder. Any other suggestions?

[dwcraig1]

You might try setting your soft cell cut off to 2.65 volts (3.09 is ideal for LiPo)