Wondering If I Ruined My Mod.

Since I have a box of the Aspire 2.1ohm BVC's in my possession I've been wanting to use the coils in my eGrip ever since I found a few videos on Youtube showing how easy it is. But, I've only read and seen egrip users using the 1.6 or 1.8ohm version. I was wondering if anyone in here has tried this out or is currently using them I the eGrip. Pros? Cons?...just wondering  

In the USB 1.0 and 2.0 specs, a standard downstream port is capable of delivering up to 500mA (0.5A); in USB 3.0, it moves up to 900mA (0.9A). The charging downstream and dedicated charging ports provide up to 1500mA (1.5A). USB 3.1 bumps throughput to 10Gbps in what is called SuperSpeed+ mode, bringing it roughly equivalent with first-generation Thunderbolt. It also supports power draw of 1.5A and 3A over the 5V bus.

From he How USB charging works, or how to avoid blowing up your smartphone | ExtremeTech  

I have a variable voltage/wattage battery and I have heard that some say charge it as often as you can this reduces stress, others say that's bad, some say a combination of long and short cycles but I don't know which is best. My battery's manual said get down to 10% but it doesn't measure it accurately (but I love these batteries so I don't want to change but they are expensive so I want to prolong their life span as long as possible even if that does mean charging them very often.) I do have two so charging often isn't an inconvenience for me if that's what I am supposed to do.  

LONG STORY:
Following a previous thread (Question about battery and coils (Swag II)) I have been using Molicel P26A with my two Swag II's for a couple of months.
I purchased four batteries but I have been using only two of them. I always keep them in the Swags, since I use the Swags to recharge them. Practically I keep one of the Swags under charge while I am vaping with the other one.
I find this routine very convenient however I am wondering if that is the best way to recharge them. While a the begining both batteries were working quite well until they reached a 20% level, now one of them seems to be very weak as soon as it reaches 50%, and for that reason I have decided that it was time to replace it.
The other one is still Ok.

SHORT STORY:
Is it ok to recharge the P26A's with the Swag II's or should I use an external charger? Would an external charger significantly improve the life of the batteries?
Also, can an external charger fix a battey that seems to have lost 50% of its capacity.  

So I have a SMOK M80 XPRO PLUS that I got a few days ago. Just wondering is it safe to use a phone charger to plug it into the USB port on the bottom?

My uncle, who I stay with, watched some news article about someone's battery blowing up in their apartment and just wants to make sure I am charging this thing safely. I have been using my phone charger up to this point, with no issues.

Any feedback would be greatly appreciated! Thanks!  

I've been charging my 18650 batteries on a Nitecore charger but having to unscrew my Smok XPRO m65 is a real pain so thought I may as well make use of the USB port and charge the battery while it's still in the mod.
But I've been hearing a few horror stories of other mods such as the clouper, apparently its not safe to charger using the USB port

I'd really appreciate it if anyone can help inform me if I'd be able to use my phone charging adaptor with my mod.

The input and output specs of my phone charger and mod input are in the attached pics.

Cheers everyone  

One of you guys suggested the Voopoo drag x when I discussed my 20th vape device no longer charging through the USB mini. It was a Geekvape which they claim are indestructible. Of course they don't mention how the USB port is a cheap piece of garbage that will eventually fail even when treated delicately. I received the Voopoo drag x in the mail a couple days ago. I didn't realize it doesn't come with a battery so I picked up an IR18650-25R 20A 3.7V battery at a local vape shop. It was working beautifully for about a half hour and then it would just turn off. Even if I pushed the buttons or clicked five times, it wouldn't power up unless I took out the battery, put it back in and then clicked five times. Then I would get a few puffs and it would turn off again. Then today, I started receiving a message that said "atomizer short". I kept getting this message over and over even if I took out the coil and put it back in. Occasionally, it would start working again, but between the device powering off and the atomizer short problem, it's more or less unusable. It was only about $60 in total so no biggie. So now I'm shopping around for my 22nd vape device. Does anyone have any suggestions?  

I know the topic of how to get VG film off glass surfaces has been well explored in past threads. But I just "discovered " by rinsing my reading glasses off in plain tap water and a good wipe dry with a paper towel that water will clean it. I'm gonna do that to my car if I ever get out of the house long enough to do something useful. I've tried various glass cleaners and they never seem to get it all. But water did on my glasses so...just a thought..  

I bought a brand new freemax twister 80W kit and when i connect it to the charging port the blue ligt flashes then theres no light to show that it is charging, what may the problem be???  

i have a new Itaste VV4 15 watt 1000mah
I don't seem to get as much time out of my battery as i expected- does anyone know about how long it should last?

I'm going to test it out to see exactly how much time i get out of a full charge but as of right now i just feel like it's not lasting as long as it should.

Also when I use it plugged up on a charging cord the battery still runs out till it eventually has no charge and turns off and cant be used till it adds up some charge on it- I thought since it was a pass through device i would still be able to continue to use it while being plugged up on the charger, so im not sure if I should actually be able to with this device and mine is not working correctly or thats just how this unit does work.