Probably not. The opus is the same width I'd think as that based on the 510. Well maybe it is thinner? I can't tell but it just looks like they use a wide 510. Why would they make a non removable battery out of three Sony vtc5? Surely the space saved can't be worth the lack of removability.Not really, I have three of them, the VS200, the evolv one, and the flawless one. Of the three, I like the flawless one the best, but that's just my personal opinion, it feels the best to me.
Here's a tall skinny one: http://www.protovapor.com/product/xpv-dna-200d-extended-capacity/
It's too goofy for me, but it could be cool, looks like it takes 18650s too? Maybe.
I don't really see anything that sticks out to me more than the opus. I bought it initially because it's pretty small for what it is. THe design I like.
I'm going to post a couple pics in this reply.
Opus / boxer /ipv d2


Ipv d2 is about as big as I want to go out with. But like I said I rarely use more than 30-40 watts / 25-30 joules. I'll run out of juice in my GEM before I run out of battery.
A lot of the time I take an ego one battery out with a gs2 clone on it.
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