I just recieved my L2 510 kit from Strictly e-juice yesterday. I charged the battery overnight for 8 hours, used for 20 minutes and recharged for another hour as the instructions said. This is the stainless steal one but I doubt that matters.
I tried blowing out any manufacturers primer, but there was none that I could tell. I began with a 510 cartridge filled with straight PG Menthol liquid also from SEJ. I was not pleased with the amount of vapor (very very little). I then took a smaller bottle and added a few drops of pure unflavored VG to ~3ml of the PG menthol and I found a bit better vapor production and no loss of flavor.
Now...I had emailed with Jane last weekend extensively, and she brought to my attention that 901 carts fit on a 510 as well, and as I have been a dse901 user for a few months now, I took a 901 D shaped cart off my 901 unit, refilled it with the PG/VG blended liquid I just tested in the 510 cart, and much better vapor production. Cooler in the mouth, yes, but as a menthol lover thats more than fine by me.
Technical Specs from the bottom of the little box everything came in states
length: 112mm
Battery power: 18-200 operation per charge
battery life:300 charges
Charging time: 120 minutes
3.0v-3.2v
Since this is my first 510, and I've not tried the original 510 I can't comment on a difference between the two. However, my assessment would be:
A little less vapor than the 901 but not by much.
Battery does not have a center hole in it,so leakage down into it is a non issue.
The manual button has gotten stuck 2 times where the LED was off but it continued heating, this is the first charge of the battery, so I was a bit worried on that fact.
Much better performance with a 901D shaped cart than the included 510 carts, and the addition of a little VG to the PG 24mg menthol juice was the winning combination.