I'd be careful - only because I've read in several threads over the last year that it's best to use the charger supplied by the manufacturer, whether it actually fits or not, to help avoid issues.
There is a big myth going around that is fueled by ignorance in batteries. People fear the unknown. Before I attempted using a KGO charger on an eGo Twist I watched a buddy of mine go out and get the "official charger". I looked at it and it's the exact same as mine down to every last number and detail save one, the name brand. Sad part is, he already had that same charger that he also got with a KGO (we both started on KGOs). His name is Estarra and you can find this proof here on this video (please reference time index 5:22):
http://www.youtube.com/watch?v=HmUQnrCpQ_w please reference time index 5:22.
All you need is one of the commonly sold USB to 510 charger with an output of 4.2v and 420mA. There is no magic charger for the eGo Twist, all 4.2v lithium ion batteries are the same. Even lithium polymer batteries like the KGO VV can theoretically be charged with this charger as long as they are 4.2v (except that because it is a passthrough it uses a Mini USB so you don't need to. You should be able to charge it like a normal eGo anyway, but don't try this at home please (thx)). That's the numbers, and I have been using my KGO charger on my Twists for months, no venting, no fireworks, tyvm. That's my $1.
For the record mine says "Desan® USB Charger"
Input: DC 5v 500mA
Output: DC 4.2v 420mA
CE (house picture with an arrow pointing in from the right side bottom) and the double square picture. Just like Estarra's in the video. Mine has a wall adapter to USB in. The output of that adapter is the same as the input to the USB, but that is irrelevant because a solid computer will put out the same numbers as the input. Please note that all computer cases are not created equal and the frontpanel USB ports often do not consistently put out as high as the 5v, as claimed. If you have to charge from a desktop computer, use the back ports straight from the motherboard. BTW I am an IT professional. I recommend that if you do charge with USB only that you get a wall adapter. It's not worth the damage to your computer if there
is a problem.
Note that the overcharge protection circuit is different for each battery and, for example with a KGO where the light flashes quickly, the light will flash at different rates as a result (red to green) of using different batteries with it. This is not a cause for concern. The eGo Twist flashes much slower than a KGO - about 1 time every 8 seconds.
Actually, his Twists are from Hello, not Joyetech, as he pointed out recently in his sub-forum. Also he's currently out of stock on all 4 styles he had. But from what people have been saying, they work great, which is probably why he's out!
eGo C Twist Variable Voltage Black
Just because he sold out doesn't make them great. It means they're cheaper than everyone else and a lot of people got caught up in a lie or misunderstanding.
He must have JUST changed that on the site then btw. Good thing I didn't order one.
he added this:
"Eric's Review:
Please know that I purchased these by mistake, I meant to order JoyE but must have had a brain freeze, hence the lower price. That said, everything I have ordered from HelloSmoke has been excellent. it seems to perform just as well and in the same manner.The quality seems just as good as JoyE, I do not think you will have any problems with this item"
^^^
Totally not cool that he was printing "genuine joyetech" on his site (but I will assume it was a mistake and not a lie that he was caught in). Caveat Emptor. Real JoyETechs are going for like $26 then, and that would be Altsmoke.com which does say "genuine joyetech" btw. Sweet-Vapes.com (not to be confused with sweetvapes.com (no dash, lawsuit btw?) has them too for a dollar more (or so).
It seems even Americans are knocking each other off). At this point there is no real way to tell a real from a fake anyway which just makes the picture I painted of China before so much more true. Although one quick way to spot an obvious knockoff is the lack of logo on the bottom of the battery (the twisty part) and the lack of the words "eGo C Twist" on the side of the battery. If they don't show both of these features in their picture on the site I would be quite wary. If you come to find that they aren't genuine, and they said they were, send them back. If they give you trouble call your credit card company. False advertisement isn't cool, in America anyway.
I'm going back to edit my post so people don't get screwed up. Thanks for pointing this out. /salute