Ohhh, Safer Batteries... One Day

Is it safe to use the vaporesso revenger (built in batteries) and the vaporesso revenger mini (lights up) after owing it for three years? It seems to have kept 3/4 battery charge and I have not used them in a year and a half. I ask because I’ve read older batteries can be dangerous to use if they have low voltage or something.

Also is it safe to use Sony lithium ion batteries after 2 1/2 years? Their volts was at 3.6 when I started charging them. I haven’t used them in a year and a half, but I did charge them once during the year. Using them in arrow sense mod.  

Hi
I just got a Xtar VC2s charger for my 21700 batteries (Samsung 40T).
Chose that charger also because it "charges at safe low current".

When it charges 2 batteries, it's at about 1000 mAh for each battery. All good.
But when charging only one battery, it charges it at 2000 mAh. Hmm?

I assume 2000 mAh is still "safe".. But won't that reduce lifespan on the battery?

The charger manual says "when the power supply is insufficient, the charger will reduce the charge current correspondingly".
So maybe I should get a usb power supply with like 1000 mAh output?

I will only be charging one battery at a time, and prefer charging slowly if that gives more safety and lifespan.

But I don't know if charging at 2000 mAh is really an issue..  

Hi
I'm usually vaping at just 14 watt (mouth to lung, nothing heavy).

Now I'm soon getting a new mod that takes 21700 batteries, so I'm searching for the best batteries without spending too much or too little.
(aiming for Samsung, LG or Sony, to be safe)

I see some batteries hold 5000 mah, like the Samsung 50E (cyan).
But it only has about 10 amp discharge rate.
So less than half than "regular" 4000 mah batteries for example.

Is 10 amp more than enough for vaping at just 14 watts, or should I find a more "high-drain" battery?
I want to be safe and avoid risks or heat.  

I bought my Sigelei 100w Plus a few days back and ordered 2 Sony VTC4's on my same order (I'm confident they're legitimate, I've bought some before) to be able to marry them together and use them with my Sigelei. Upon receiving the batteries, I labelled one A, and one B and put them into my charger at the same time (charger was off, put both in and turned it on), one battery is slightly more charged than the other (it's 2/3 bars, while the other is still 1/3). I'm a bit worried about using married batteries, I understand rotating A and B in my Sigelei and charger but will they be the same charge when they're done? They're new batteries and they both went on at the same time yet one of them is charging a little bit faster.

When both of the batteries are fully charged, will they be safe to use and cycle accordingly? I heard about if one battery has even a tiny bit less, the batteries will take an uneven load and it will make it risky. How do I ensure that these batteries remain married?  

I'm charging a purple EFEST IMR battery in an XTAR LI-ION battery charger and I wanted to make sure Efest IMR purple is actually covered under LI-ION charging.. I can upload pictures in a second but I've been charging the battery for about an hour and this is my first electrical mod so I am trying to make sure, thank you. It says it is for rechargeable Li-ion batteries only but so far the battery is not hot or any problems  

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.  

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  

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!  

Hello Guys,
I noticed that there are a lot of people who are used to charge electric equipment in Inappropriate ways.

Don't know how many vapers use the charging cable to connect your e-cig device or charger first and then plug the adaptor to the power supply end.
Taking phones as example, if you firstly connect your phone and then plug your adaptor in the socket, there will be a huge voltage assault to the phones which is bad for the life and performance of your phones. Otherwise is the adaptor you are using is DC adaptor, by connect the adaptor to socket first, the high AC volatle can be converted to low safe voltage such as 5V, 12V, in this way, the assault to your devices will be reduced in a large degree.

This is all the same for charging e-cigs, and batteries.
 

Okay guys, first of all, sorry if this is in the wrong section, was unsure where to post this warning.. I just want to show you guys my experience with eGo chargers.. I'm unsure of where I got this one, I think it came with my Vision Spinner battery, I'm pretty sure the supplier just bundled it with a crappy cheapy one.. Here's what happened to mine:
Imgur

I noticed after a weird flashing occurred on the LED, the battery LED was constantly flashing, I noticed that the plastic had caved in and I thought I had stepped on it or something, but nope! The whole thing was melting and it smelt absolutely horrible, I opened it up and I noticed that one of the capacitors on the PCB had burnt out.. Be careful with chargers and NEVER leave batteries charging unattended, this could've caused a serious problem if it had caught fire.. Please be safe everyone!