purkle
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Post by purkle on Feb 6, 2014 13:59:01 GMT
Ok maybe I'm getting there... so using a higher resistance coil will draw less current from the battery, but also mean less power (&therefore vapour); and using a lower resistance coil will do the opposite, but the 'safe' limits of the battery may be challenged.. I can test the voltage of the circuit using my multimeter, so say the voltage reads 3.7v and I've got a 1.8? coil in, then I'm drawing 2.06A, which is surely a nice safe current from a battery that can give 10A? If that's correct then I'll be fine eh?!! LOL! this is hilarious, sorry everyone! back to school! xx edit: I found this as well; (AkkuDB link showed me that the Efest's are (I think) Panasonic in that battery) www.e-cigarette-forum.com/forum/super-t-manufacturing/295446-load-testing-panasonic-imr-18650-2250mah-cgr18650ch-stock.html& the graph looks to show (although vv small writing!) voltage in relation to AmpHours (same as capacity x 1000 I'm assuming) which shows a really good voltage drop-off for them, so I'm satisfied I've got a good yin, just not totally sure about the safety & what kind of resistance to use.. all learning!!
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purkle
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Post by purkle on Feb 6, 2014 13:30:15 GMT
Thanks Brambles, that's just the kind of info I was looking for, thanks very much! I'm glad I was on the right track with the voltage drop-off as I've got my first mech mod on it's way..! (which will need to last me some time!) I kinda had to make a decision & just went for Efest 2250mAh 18650's from Torchy, almost wish I'd waited now but I'm sure they'll be ok for a while at least, as long as they're safe enough! They're not protected, but they are IMR so I don't think it should be too dodgy.. (she says, hopefully!) They're 3.7v & discharge up to 10A, but I'm only currently using 1.8? & 2? resistances which I gather will not push the battery to it's max & get too tricky. I've got a nitecore i4 charger on it's way which shouldn't overcharge them & charges at a safe voltage. Also because they're IMR they shouldn't be able to overheat I think? From what I revised yesterday, 3.7v / 10A discharge = the minimum safe resistance 0.37?; although I'm sure I won't be discharging at anything like 10A, so I'm not entirely sure what to make of that.. 3.7v / 2A (which you mentioned might be a more normal load) = 1.85? so possibly I'd be better sticking to my higher resistance coils.. I'm thinking a good amount of power might be 10W, so 10W / 3.7v = 2.7A; if I'm drawing a current of 2.7A then the minimum safe resistance would be 1.37?. The only bit I'm not sure about (which I now want to find out since I've not bought protected batteries..!) is how you draw a lesser current out of a battery which can discharge 10A. If you've got a clue what I'm asking then that would be great.. if I'm just getting all gobbledegooky then no worries But thanks anyway for the links & very useful info I'll also get a hold of Torchy methinks as maybe he'll recommend a different battery as he won't have sent mine yet, I didn't realise he was on UKVapers boyofford so thanks thats helpful too! Cheers, Lauren
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purkle
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Post by purkle on Feb 5, 2014 19:21:53 GMT
Hahahaa!! shinyitus, loves it. Yep course I'll let you know, everything's on it's way now, oh except I just need to order batteries tonight, but I'll review my arse off I expect cos I'll be soooo pleased! Although I 'spect I'll think it's totally amazing, but whether my opinion will be much use I don't know, as I've not tried anything decent yet.. quite yet... couple days to go!! yass!!!
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purkle
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Post by purkle on Feb 5, 2014 19:16:37 GMT
Ah, cool beans my vapemail's on it's way! my vapemail's on it's way! yas!!
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purkle
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Post by purkle on Feb 5, 2014 17:22:16 GMT
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purkle
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Post by purkle on Feb 5, 2014 17:11:59 GMT
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purkle
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Post by purkle on Feb 5, 2014 15:30:44 GMT
& thanks charon too! ayee, I've obv got too much time on my hands lol!!
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purkle
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Post by purkle on Feb 5, 2014 15:28:01 GMT
Thanks Giles & DiscoDes (great name btw!); yeah the video was useful actually, a good link, nice one. Although, really, why doesn't anyone just write stuff down anymore?!! But it reminded me about C ratings, very helpful. Didn't realise previously that C rating & mAh capacity is inversely proportional, that explains a lot I can't find any reference to C rating or discharge rate on most of the battery websites though, even good components sites. EVEN Torchy doesn't seem to list C rating as far as I can see..! And it does seem to be important, I can't just ignore it, can I? The vid still didn't really explain the differences in voltage drop-off & the consistency of batteries, although I spose I can just keep reading & researching. Maybe you're right DiscoDes & I should just buy the brands that other people say are good! I don't want to become a batterygeek just for the hell of it, I'm meant to be studying chemistry haha, not physics! (Although all relevant I spose..) I'm just one of those people who need to always understand everything, I'm not good at accepting stuff if the info isn't there or if I don't get it! however I don't have a couple of years to learn & decide which batteries to buy haha! So I guess you're right... Thanks Guess I'll just need to go for it & also keep researching
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purkle
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Post by purkle on Feb 5, 2014 12:14:02 GMT
davide king ...newbie envy Looks good. Is on my shopping list Aww!! feel really bad now esp. as you're giving me the thing which will actually make them useful!! To be honest I was Very Naughty & I think my bank manager is about to deliver a strangulation notice to me personally... eek...! But I've spent so much money already on zillions of replacement crap bits, loads of clearomisers most of which have been 'dead on arrival' and clone ego batteries 'DOA' as well, that when you recommended the davide to me & I saw a couple of reviews, I thought, well, 'ha! I'm gonna be naughty!' I get kinda run-away with myself in that way sometimes, probably absolutely no need at all for me to get the aerotank AS WELL (oh no, bank manager's at the buzzer lol!) but I got all a bit overwhelmed in the excitement..! Hope your shopping list comes into fruition soon me dear.
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purkle
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Post by purkle on Feb 5, 2014 11:58:42 GMT
Hello ya vaping friendlies! sorry.. me again.. with MORE questions!! Once again something fairly simple (buying a couple of batteries for my imminent mod ownership (yas!!!)) has become oh-so-complicated! But probably just because, well, that's how my brain makes it, haha! I've been reading a lot of stuff on Torchy's website, very interesting, total SHOCK HORROR about the state of those Ultrafire batteries which were just re-cased old defunct / tiny wee batteries!! that's mental! However the bit that was really interesting was the voltage capacity graphs showing how various batteries behave at a constant current discharge. I'm looking specifically at the varying performance of 18650 batteries but thought what I'm not sure about would probably be relevant to anyone looking for any kind of battery probably.. Defo gonna buy from Torchy as he gets such great feedback from yous, plus he definitely knows his stuff & is honest about the facts it seems so nice one for the recommendation Blaa, blaa, sorry I'm terrible for wittering on! So these graphs.. It seems to me that for vaping you want a battery which is not JUST going to last as long as possible, but also stay above a certain voltage (say, 3.5v) for as long as possible? If this is not correct then please somebody jump in here & stop me digging an ever deepening hole ! But what I was surprised about is that some lower capacity batteries seem to completely blow other higher capacity batteries out of the water! For example, Sanyo 2600mAh (18650's) start at 4.2v & steadily decrease in voltage where they cross my 3.5v fence at 2600mAh.. so that's a really great capacity but also a useful one because at nearly the end of it's power it's still delivering a decent voltage (& therefore I assume Mr.Vaper is happy). Whereas (& this is totally not the most extreme example by any means, but another decent battery I think) the SenyBor 2800mAh protected batteries start similarly but cross the 3.5v fence at just under 1500mAh?!!! Here's a list of a few of them, from the best downwards (judged by my possibly stupid fence rule..!) ('P' = protected) Sanyo 2600mAh: start 4.1v, cross the 3.5v fence @ 2400mAh Torchy 2600mAh: start 4.1v, cross the fence @ 2400mAh Torchy 2400mAh: start 4.1v, cross the fence @ 2400mAh SenyBor 2600mAh 'P': start 4.05v, cross the fence @ 2350mAh Sanyo 2800mAh: start4.05v, cross the fence @ 2300mAh *but meant to have a higher capacity than Sanyo 2600mAh! Lezyne 2400mAh 'P': start 4.0v, cross the fence @ 2050mAh Panasonic 3100mAh: start 4.05v, cross the fence @ 1750mAh AW 3100mAh 'P': start 4.0v, cross the fence @ 1650mAh Torchy 2800mAh: start 3.95v, cross the fence @ 1550mAh *but meant to have higher capacity than Torchy's 2600mAh! Torchy 2800mAh 'P': start 4.0v, cross the fence @ 1500mAh Ok I'll stop OCDing everyone out now, I'm sure you get what I mean. They're all quality batteries, but they differ a lot & the actual stated capacity doesn't seem to mean much, even two different batteries by the same company (e.g. Sanyo) can outperform each other where the lower stated capacity can run at a higher voltage for longer than the higher stated capacity one. The Xtar batteries on Torchy's site looked great, but again the 2600mAh 'P' looks a lot better than the 3100mAh 'P'!! Some of the actually poor quality ones were REALLY bad: e.g. Ultrafire 3000mAh (red/white): start 3.95v, cross the fence @ 550mAh (!!!) So obviously it's important to have a good look at the stats, & aye I'm aware that probably a difference in a couple of mAh or whatever won't be too noticeable, but according to some of these it could make a big difference if I'm not careful about choosing. Can someone tell me if how I'm looking at these graphs is useful or am I 'doing a politician' and reading something from the stats that really isn't what is actually the case?If what I've written is a useful comparison, then the best 18650 batteries were Sanyo 2600mAh, Xtar 2600mAh 'P', and Torchy's 2400 & 2600mAh. And all of these were better than any make of battery listed as anything over 2600mAh capacity?! Aaaaahhhhh, brainfry!!!! (Thanks in advance.. sorry about my wittering!!)
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purkle
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Post by purkle on Feb 4, 2014 23:38:36 GMT
...and the extremely helpful advice keeps getting even more helpful!! what a lovely bunch you lot are So I've done the deed anyway & got an Aerotank & an Anyvape Davide King.. simply because that's what I'd decided on a few hours ago & having spent at least 3 full-time days reading & pondering I thought, f it, go for it! done. however the thing about BDCs being hard to learn to recoil is very useful, quite likely with a decent set-up I'll be fine with BCCs, so really great of ya Adam78 showing me how to wangle it so I can just fit a single coil in my aerotank, that's crackin! Just one more wee question about the two chargers.. they both seem able to charge single batteries (i.e. treat each battery independently) which would be kinda nice cos I am used to putting a battery on to charge as soon as it has run out, so then if another runs out while no.1 is charging, I can stick it in & not have to wait for the 1st to finish.. so that's ok as long as I'm right..? Just wanted to check does the Nitecore i4 fit 18350 batteries? I'm sure it must do cos that's exactly what you were showing me Adam, it's just that 18350 wasn't listed on the Nitecore website, only 18650 as well as some others I hadn't heard of! Waa, shock horror! ha!
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Post by purkle on Feb 4, 2014 23:16:20 GMT
Oh, one last thing.. giles, your dingo looks great! Nicest thing anyone has said to me this year But, alas, I don't have a dingo Must be someone else HAHAHA!! oh F, yep it wasn't even..! glad Adam78 liked this too! anyway cheers to all for all your kindnesses
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Post by purkle on Feb 4, 2014 12:05:31 GMT
WOW!! seriously, everyone who has posted here thanks so so much, tons of really really useful advice, especially Adam78 & @the Mod Destroyer!! Jane I haven't checked my pm's yet (will do so just now) but you sending me your sentinel clone is so massively appreciated, really, thanks millions I had no idea there were so many different choices & variables.. god the world of vaping has totally exploded eh!! your advice & link to the davide looks fantastic, (BCC are a priority in this for me cos I've had much better experience with them).. think I'll try one of them instead of a protank as the davide can use both heads so maybe that will give me a bit more choice initially & also if one type is then easier to re-coil myself then that might be helpful too.. Also advice about wicking & silica vs. cotton is very useful, I'll def google for a tutorial. Thank F for the internet.. where on earth would we all be if vaping had come about before we could all share info like this!! charon, thanks for great link for coiling/wicking materials, aye we were just buying like pre-made coils to fit into old heads, but thanks to Adam78 I've now ordered a multimeter so I'll be able to work from scratch, nice one Adam78.. haha, wish I had asked this aaages ago!! it was the whole thing about the multimeters being stated as measuring 200ohms - 200Mohms that was doing my head in cos I didn't think it would work for this.. thanks, had now ordered one & looking forward for my first proper coiling experiences lol (if they're anything like my first fag-rolling experiences all those years ago then that'll be a pure laugh!!!) The link to the mods at fasttech is v helpful, obv I'll stick with Jane's sentinel for now but previously I've always had at least a couple of batteries on the go so that'll be good for future; I'm guessing I want to order with the knowledge it'll take a good few weeks to arrive.. but people on here seem to recommend fasttech so you do actually get what you ordered eventually aye? cracking prices compared to buying in the UK. so.. a charger.. couple of weeks ago I found a clone ego where you could pop the bottom off & replace the battery (aa size) so I went & forked out on a really good ansmann intelligent charger & some maha powerex 2700 batteries.. gutted!! obviously they didn't work cos of the higher voltage needed to power a vapourizer, ooft!! so I don't wanna make that mistake again!! The battery boy has a charger here www.ebay.co.uk/itm/Xtar-XP4-charger-for-14500-16340-18350-18490-18500-18650-26650-Li-Ion-NiMh-/291064704763 ; does that sound good i.e. intelligent & tries not to overcharge batteries etc.? or would I be better with something like this: www.amazon.co.uk/JETBeam-Intellicharge-i4-V2-Nitecore/dp/B007WSFWPG/ref=sr_1_1?ie=UTF8&qid=1391514396&sr=8-1&keywords=nitecore+i4 ? or any other suggestions muchos appreciados? (apologies, for some reason I fall into the habit of made-up spanish & french sometimes, just fer a laugh innit!) Lastly.. before this becomes my usual essay.. Greg & charon, thanks it's good to hear some advice about the scare stories.. I'm happy to go for the mod transition & I think I'm aware enough that it may take a bit of messing about before I get a good result, that's ok, but I really appreciate the MVP2 / aerotank option as a back-up, I'll def look into that just in case. The aerotanks look/sound crackin, I like the variable air thing.. might just have to try one of them too in a while. To be honest I'm not really the sort for pushing things as far as they can go, & it seems that's the main danger with mech mods - when folk start playing with really high voltages & really low resistances (I think..?!) which I'm not likely to do, I think I'll be satisfied with a more middle of the road setup judging by the GINORMOUS clouds of vape I've been seeing on youtube reviews haha!! I'm very excited!!! Oh, one last thing.. giles, your dingo looks great! (no connotation intended, ha!) just watched a review by a nice welsh boy puffing huge clouds.. how do you find it for battery stamina, i.e. how long does it last u between charges (&do you use it a lot? - I'm really quite a heavy vaper it seems, eek!) So in conclusion, for my first 'real' (aahhh, so excited!!) set-up I'm gonna go for an Aerotank and a Davide, I've got my multimeter on order & I'll get some stuff from the wire&things people.. I'll order a couple of batteries from the infamous Battery Boy (&he's local to me, even better!) for the extremely generous Jane's Sentinel, & I just need to get a charger then. Wicked! Thanks extra specially much people!
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purkle
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Post by purkle on Feb 3, 2014 17:53:11 GMT
Giles - nice one, I didn't know that some of the electronic mods measured resistance, that's good.. I've been trying to work out buying a multimeter but a lot of them seem to only measure very high resistances, there seems to be a bit of an art to it.. we haven't really been playing about with different resistances yet, just using 2ohm pre-made coils which you then need to fit into the coil-holder bit which screws into the atomiser; they're not bad about £7 for 20 coils but aye, would prefer to start making them from scratch. Any advice on why cotton wicking is better? I think we've been using some sort of manmade wicks..
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Post by purkle on Feb 3, 2014 16:56:37 GMT
Jane - wow, muchos thankos!! will pm ya shortly, would massively appreciate that! also cheers, will check out the magneto (edit.. that's the exact one I've been oggling over haha! good to know it works! what do you use for a tank on yours?).. aye I've seen the battery boy's name pop up a few times on forums, defo good to have a recommendation on stuff like that I've bought so many duds so far!!! Adam78.. nice one, had no idea you can get a glass tank for 15squid, that's amazing, & I've heard a lot of good stuff about the Kanger tanks, nice one, thanks a lot. Maybe I need to look a bit more into types of mods cos some of them seem to be completely mechanical & completely wreckable if you don't know what you're doin, whereas others just seem to be decent batteries which still safety-barrier the power etc.. eek lotsa readin to do! Anyway hopefully I might not need to experiment much now after v kind offer!!
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