I am a sub-ohm, regulated mod guy. You might call me a cloud chaser. But really what I am after is the throat hit that comes with bigger clouds. No matter how many I've tried, pen/stick mods just never cut it for me. Having said that, I purchased the Limitless Pulse system as my on the go, working in the yard, sneaking hits in the store, ect ... For when/where I want my nic, but I don't want to have a big mod in my hand. Initially it got used intermittently, a few hits every few days or so. When the battery ran out and I went to charge it it wouldn't charge. I contacted customer support and they gave me a few things to try. When none of them worked they sent me a brand new system, no questions asked. It arrived the next day and I figured I'd put it to a hard test. Mainly to run the battery down to make sure it would charge. But, also to see the quality for consistent vaping. I am pleased to say it's working just fine. And once again this business shows it's top-notch customer care and appreciation. I have never had anything but WONDERFUL experiences with this company. Thank you guys so much!