Vamo v3 18350s stacked issue :(

[bernardscott]

Hi guys

Got my lovely new vamo v3 black chrome in the post today,

I have a slight issue. When I put 2x 18350s in it, it gives me low load, the battery's are fully charged and it also gives me a 0.0ohms reading

But when I put in 1 x 18350 in, it works fine and reads my igo-L at 2.4ohms

I don't quite understand what the problem could be, I have no 18650's at the moment but it has been advertised as working with two 18350s

Thanks in advance

[markm]

0.00 normally indicates a short, is your battery cap tight?
It may be the batteries are a little too big and they are pushing something up inside.
You could try it with the cap half unscrewed to check.

[Karma]

Personally, I wouldn't use stacked batteries

[jeffc]

Hi bernardscott.

I cannot give you a `techy` reason, but I think you are pushing to much power through with 2 stacked 18350 batteries.

By using only one the max you are using is 4.2 volts.

I strongly recommend that you only use 1 battery at a time in any mod you have.

hope you`ve got a couple of 18650 on order, if not you`ll only get around 2 hours vaping time from your 18350.

TIP: never leave battery in mod when not in use, the Vamo and others trickle use up power in battery even when in the off position.

Enjoy your Vamo.

Happy vaping.

jeffc

[Kaaru]

I just tried it with my older Vamo out of curiosity as I`ve never tried 2 18350s in it before - but it worked OK, showed 7.7v and Ohms were correct as well.

These batteries don`t have protection circuitry on them - could that have something to do with it ? otherwise I can`t imagine what it could be

[bernardscott]

Jul 2, 2013 16:06:46 GMT markm said:

0.00 normally indicates a short, is your battery cap tight?
It may be the batteries are a little too big and they are pushing something up inside.
You could try it with the cap half unscrewed to check.

You was spot on +1, it was too tight, loosen it up a bit and works fine, it appears that the vamo v3 doesn't like stacked 18350's



jeffc thanks will bare that in mind will order a couple of 18650's ASAP

Thank you

[markm]

Jul 2, 2013 16:17:08 GMT bernardscott said:

Jul 2, 2013 16:06:46 GMT markm said:

0.00 normally indicates a short, is your battery cap tight?
It may be the batteries are a little too big and they are pushing something up inside.
You could try it with the cap half unscrewed to check.

You was spot on +1, it was too tight, loosen it up a bit and works fine, it appears that the vamo v3 doesn't like stacked 18350's



jeffc thanks will bare that in mind will order a couple of 18650's ASAP

Thank you

Its the other way round - your batteries are too big, not all batteries are exactly the same size.
You will probably find if you had a different brand they would be on the loose side. So please
don't make the mistake of blaming the poor old vamo.

[markm]

Jul 2, 2013 16:13:47 GMT Kaaru said:

I just tried it with my older Vamo out of curiosity as I`ve never tried 2 18350s in it before - but it worked OK, showed 7.7v and Ohms were correct as well.

These batteries don`t have protection circuitry on them - could that have something to do with it ? otherwise I can`t imagine what it could be

Although Im of the camp that dislikes stacked batteries, in the case of the Vamo
you don't actually get the upper performance unless you fit two 18350.
it can only muster a true 12,5W with a single and I don't think the volts get past 5V either.

[bernardscott]

Jul 2, 2013 18:36:28 GMT markm said:

Jul 2, 2013 16:17:08 GMT bernardscott said:

You was spot on +1, it was too tight, loosen it up a bit and works fine, it appears that the vamo v3 doesn't like stacked 18350's



jeffc thanks will bare that in mind will order a couple of 18650's ASAP

Thank you

Its the other way round - your batteries are too big, not all batteries are exactly the same size.
You will probably find if you had a different brand they would be on the loose side. So please
don't make the mistake of blaming the poor old vamo.

Haha I get what you mean, I am using efest imr 800mah 18350's
which are pretty universal

quite happy using it in 18350 single mode atm till I get some 18650s

[fiddles]

I have a VV350 lavatube type mod, it will only work with 2 x18350 batteries if you put in 1 x18650 it comes up lo for low power. Must say though she is great steam machine, cheap too

[richo71]

Jul 2, 2013 19:20:00 GMT bernardscott said:

Jul 2, 2013 18:36:28 GMT markm said:

Its the other way round - your batteries are too big, not all batteries are exactly the same size.
You will probably find if you had a different brand they would be on the loose side. So please
don't make the mistake of blaming the poor old vamo.

Haha I get what you mean, I am using efest imr 800mah 18350's
which are pretty universal

quite happy using it in 18350 single mode atm till I get some 18650s

Are they the nipple top or flat top, just thinking that if they are nipple top when the bottom cap is screwed on they are a tad to long and shorting out on the bottom cap as they are compressing the spring too much, just thinking outside the box

[richo71]

Jul 2, 2013 16:13:47 GMT Kaaru said:

I just tried it with my older Vamo out of curiosity as I`ve never tried 2 18350s in it before - but it worked OK, showed 7.7v and Ohms were correct as well.

These batteries don`t have protection circuitry on them - could that have something to do with it ? otherwise I can`t imagine what it could be

I would not use protected batts on a mod with protection built in, protected batts are generally for mechanical mods only!

[bernardscott]

Jul 2, 2013 20:43:57 GMT richo71 said:

Jul 2, 2013 19:20:00 GMT bernardscott said:

Haha I get what you mean, I am using efest imr 800mah 18350's
which are pretty universal

quite happy using it in 18350 single mode atm till I get some 18650s

Are they the nipple top or flat top, just thinking that if they are nipple top when the bottom cap is screwed on they are a tad to long and shorting out on the bottom cap as they are compressing the spring too much, just thinking outside the box

Yes they are the nipple top, thats is what must be happening screwed down all the way the spring is very compressed.

[richo71]

Jul 2, 2013 21:00:13 GMT bernardscott said:

Jul 2, 2013 20:43:57 GMT richo71 said:

Are they the nipple top or flat top, just thinking that if they are nipple top when the bottom cap is screwed on they are a tad to long and shorting out on the bottom cap as they are compressing the spring too much, just thinking outside the box

Yes they are the nipple top, thats is what must be happening screwed down all the way the spring is very compressed.

Thought so bernardscott, I have 2 nipple top efest 18350's but i only use them in turn in my cheap but good uDTL mod, i use and purchase mainly flat top as i have a bOd telescope with an eVic head, it's quite surprising how much more length is added when using nipple tops.

[richo71]

From what i am lead to believe that with these devices they pump out more power than any single battery on the market can cope with this is why they say to use stacked 18350's in the vamo or the SVD if your vaping over 11 watts, so in Lehman terms if you have any single battery configuration in your Vamo and your at 13 watts on screen your not really getting 13 watts because the protection chip is reducing that value you see on screen down because the battery does not have sufficient power alone whether that battery is an 18650, 18500, or a 18350. This is what i am lead to believe in watching reviews etc, I may be wrong and someone may correct me but this is why i am happy with my eVic anyway