High Discharge 18650 cells as buffer tube batteries?

[Sitting Duck]

Necro posting I know but wtf in case anybody is bored whilst in isolation or something...

Now as an ex-smoker, vaper there is a couple of cross overs between AEG's & Vaping

eg: mosfets like 3034's & also vapers use 18650, 20700 & 21700 - though 18650 is most common

anyway there are a couple of good vaping battery sellers out there

18650 & Fogstar are two of the most highly rated ones

(also vaping & DIY mods, a good site is stealthvape for many bits not just wire for vaping)

ANYWAY - long story short, I mostly use single Samsung 30Q's for modest vape setups

However the heavy hitters all highly rate Molicel batteries for high wattage vaping

https://18650.uk/product/molicel-inr18650-p26a-18650-battery/

and from time to time both 18650 & Fogstar do discounts coupons/offers

so at time of posting: " iloveweekends " gets you 20% off so 2 Moli's normally £11:98

with code is £2:40 saved so becomes £9:58 & free postage at 18650.co.uk

(in the past I've bought say 3 x 30Q's about £10:50 delivered just before Xmas)

NB: 30Q's & others are good but do not have the higher discharge or ratings like Molicel's

(Moli's are very respected by big cloud chucking vapers)

So if you get bored and wish to mess about, then Moli's would be a good unit to use

& if you know where to look there are some cheap Moli's are about from legit suppliers

(be careful buying any crap, re-wrapped cheapo batteries sold as 30Q's etc... on fleabay)

Just came across those Titan batteries & eventually 18650 & this old thread - hence the necro

I might try it myself one day on a mild/modest gun with picky battery options, but got enough projects atm

Just passing on some crap in case any of you bored or into 18650 etc.. stuff 

 

[Zarrin]

Apparently you can get 4.2v and 4.35v 18650 cells so a combined 8.4v/8.7v batt - that might be a nice alternative lithium setup to a 7.4 lipo.

Edit* Scrap that, looks like that higher voltage is just the standard max charge voltage on the standard 3.7v cells - it's just some people label them 4.2v 

The problem I have found with with ebay and AliE 18650 cells is that most are utterly fake - ususally about 10-20% of stated capacity.

(rule of thumb - if they say 1,000,0000,000 Mah, then it's closer to 200 - and if it's a pack of 5 4000mah for 5 quid, then again they will be a couple hundred mah)

 

[Sitting Duck]

Apparently you can get 4.2v and 4.35v 18650 cells so a combined 8.4v/8.7v batt - that might be a nice alternative lithium setup to a 7.4 lipo.

Edit* Scrap that, looks like that higher voltage is just the standard max charge voltage on the standard 3.7v cells - it's just some people label them 4.2v 

The problem I have found with with ebay and AliE 18650 cells is that most are utterly fake - ususally about 10-20% of stated capacity.

(rule of thumb - if they say 1,000,0000,000 Mah, then it's closer to 200 - and if it's a pack of 5 4000mah for 5 quid, then again they will be a couple hundred mah)

Click to shrink...

Indeed, the old mobile phone batteries from China, were nowhere near the expected rating

But one instance maybe where a double or triple 18650 inline/series, would-be on a MP5k or on a AK-47 dust cover stick type battery...

65mm long x 3 = 195mm plus a bit more for wires/cap etc...

So in theory using say 3 x Moli's like I listed = 11.1v or 12.6v fully charged 2600mah

In a space of a crappy 8.4v 1600 mah nimah

That could add some zest under your AK's dust cover, is one example where a 2 or 3 cell decent high spec 18650 project could be worth doing perhaps ???

In certain instances on mild to modest builds a 18650 might be worth a go, as @Samurai said certainly no worse than nimah types & could get more zest in same space as a 8.4v stick type

Oh well just a thought as they say if you are a bit bored perhaps

 

[Zarrin]

But one instance maybe where a double or triple 18650 inline/series, would-be on a MP5k or on a AK-47 dust cover stick type battery...

Click to shrink...

Ak dust cover yeah probably a good fit - MP5K though...  hmm, i'm almost certain the 18650 is too wide, at least for the Galaxy G5K which is what I have, unfortunately I don't have it to hand at the moment so cant check.

 

[Sitting Duck]

Ak dust cover yeah probably a good fit - MP5K though...  hmm, i'm almost certain the 18650 is too wide, at least for the Galaxy G5K which is what I have, unfortunately I don't have it to hand at the moment so cant check.

Click to shrink...

It takes the regular stick type battery

The issue is that SOME of them have a thicker wire running down the stick joining the 7 or so cells in series...

Needs one wire running from negative/bottom of stack to top, completing the series circuit

On "some" sticks this wire is thicker or bulges more than others, plus thicker/thinner insulation wrap on the stick

Normally taking the 18mm diameter to say near 19-20mm doesn't matter too much, HOWEVER on the quirky Galaxy MP5k it bloody does as much over 19mm gets friggin tight in there

Now this is where linking just 2 or 3 together and linking the circuit with either a flatter wider strip, or using say Alpha Eco wire or something, something that has very thin but tough insulation...

Then you should be able to make sure the 18 of the 18650 only increases to 19mm

Galaxy should have made the battery channel a smidge wider or slightly oval or with a groove/channel/slot for the link wire to fall into

Yes Galaxy is a bit of a wank in many ways, the tactical fuck pig that you have to unbolt the plastic rail crap is even worse. The nozzle is not MP5 but more like a SHS M4, yet that is a tight fit into the hop unit as well as the V3 gearbox in there is not a great one either

Yeah battery is a bitch, but is another one that could benefit from creating your own bespoke battery if bored

 

[Zarrin]

Yes Galaxy is a bit of a wank in many ways, the tactical fuck pig that you have to unbolt the plastic rail crap is even worse. The nozzle is not MP5 but more like a SHS M4, yet that is a tight fit into the hop unit as well as the V3 gearbox in there is not a great one either

Click to shrink...

Most annoying thing about the Galaxy is the dumb trigger spring mech - hate putting that thing back together. 

Also it is so freakin heavy - it's like the metal body is made of cast iron (even worse when you attach the PDW side folding stock) - it probably weighs as much as your average metal bodied M4 and I know it is atleast 50% heavier than my MP5A3 with CA metal body.

I run it on G&P M140, King arms mini mosfet at smack on 330fps with these 11.1v sticks on deans - https://www.fire-support.co.uk/product/nuprol-power-111v-1200mah-20c-lipo-battery-stick-packmini-tamiya

Trigger response is damn near instant, ROF is a little stupid too,  one of the rare occasions where I did actually need a delayer chip, but I only run it on semi at the couple of CQB sites I frequent.