Some more details on the limits:
The new output limit (when you will get an E2) is 3.5 amps from 2.9 v to 4.2v. Above 4.2v the output limit is set to 14.5 watts. So above 4.2v each step has a little bit different current limit based on a power calculation. You will find that you can go much higher voltage with LR, but you won't be able to crank it all the way up to 6 volts with a LR..basically cooking the atty