what's the voltage drop for the precise ela?
Way too early to tell. If Dave's P+ series is any sign of what ELA is gonna bring us you are looking at about .2 to .3 drop underload with a standard 1.5ohms HH.357.
Last time I checked my P+18650 underload last month, I was getting 4.02 to 3.98volts with a freshly charged AW IMR 18650 at 4.18v. That's coming from a PV with original contact points (rhodium) being over 1 year old.