5Volt to 3.7volt

[Rebel54]

Hi Guys

I bought a 5volt box mod from madvapes a little while (2 batteries) and tonight I had the batteries in the charger and had only (1) 3.7 to play with, now this is how I found out to take it from 5v to 3.7v just with batteries alone.

I put the 3.7v battery in the mod and ofcourse it wouldn't work without another battery in there with it, so I threw in a std AA (1.2v) battery just for kicks to see whether it would fire up, low and behold it fired up brilliant at 3.7volts, So now I have 2 modes I can run it in 5v and 3.7v just by altering the batteries around...

Just thought it might be helpful to those with the same 5v box mod (non VV) model.

cheers Rebel54

EDIT: It was 3.30am down here in AUS land and I apologise to all concerned (who were trying to warn me) The "STD AA 1.2v" battery that I mentioned in this post was actually a PRB (Protected Rechargeable Battery) of a lower voltage of 1.2v - BUT these guys weren't to know that at the time and justifiably they were concerned for my welfare - Thanks to all that did fire up over this issue...


********************
Edit by classwife: This is NOT what was done...DO NOT DO THIS...
Please continue reading thread...

 

[Huffelpuff]

Rebel - forgive me if you are already aware but if you are using unprotected batteries there is a huge risk of hurting yourself or starting a fire. I'm hoping that I misunderstood the meaning of "AA" but it's a bad idea on a number of levels.

Just putting my $02 in.

 

[stephpd]

Be extra careful. There's a very good chance the AA battery could blow up. You're tring to drive 3.7 volts through a battery that is only 1.2 vollts.
You'd be better off putting in a stack of pennies or whatever small coins you've got. Or a piece of copper tubing.

 

[steliosak]

Be careful.
Mixing batteries especially of different types can have unpredictable results.

Does anybody have an idea which battery will go first ?

 

[madjack]

...not sure of end result BUT combining diff batts like you describe is PROBABLY dangerous or possible destroy your remaining 3.7 batt...while YMMV, I wouldn't do it, even on a double dog dare.......
madjack

 

[tj99959]

Rebel54 will be posting from a hospital bed in the near future.

 

[ChrispyCritter]

Be careful.
Mixing batteries especially of different types can have unpredictable results.

Does anybody have an idea which battery will go first ?

Most likely the AA because it will overvolt/overcharge...

 

[KABird]

Take a cheap pen barrel and cut it down to the size needed, then cover the ends with aluminum foil. Cheapo Blank that should work.

DITCH THE AA Battery for your own safety.

PS- If you want to switch between 3.7v and 6/6.4v's get a Indulgence V3. Got mine from Elite Vaporworks, plus they have a great sale on juice right now. Four bottles of 36ml for the price of three ;-)

 

[Nikkita6]

Here is another very good example of how ECF can help save lives .... seriously. I hope the OP comes back to read the responses b4 he really does hurt himself, that would be terrible.

 

[Rebel54]

OOPS !! judging by the comments I better not do this - OK have ditched the 1.2 volt battery - makes perfect sense now that it's explained this way, thanx ECF members that replied this message... Oh by the way I did forget to mention they were rechargeable "AA" batteries 2600mah BTY MI-MH (written on the side of battery) link below showing the batteries I bought awhile back...

eBay Australia: Buy new & used fashion, electronics & home d

I didn't realise at the time of writing the original post (3.30am here - was a bit groggy at the time) that I wrote "std AA battery" - BUT Still Thank You it is Great that you care for the newbies at this game We would be lost without you...

Rebel54 -> 5v man

 

[dearme]

Here's a quick battery recap. Post #25 and #26 were informative.
http://www.e-cigarette-forum.com/fo...4690-protected-batteries-vs-imr-safety-3.html

 

[phoneguy1212]

just use the other 14500 battery But put it in upside down. Works fine and doubles the mah

 

[Rebel54]

I did some testing this morning (here) with my volt meter screwed onto my 5v mod (just to satisfy my curiosity)

(2) 3.7v protected rechargeable batteries (std config) gives me dead on 5 volts as it is intended to
(1) 3.7V protected rechargeable battery with (1) 1.2v protected rechargeable battery gives me 4.1v (by the volt meter) no heat change in the 1.2v PRB and a clean voltage reading on the volt meter.

DONT DO THIS AT HOME :

(1) 3.7V protected rechargeable battery with (1) 1.2v Un-protected std "AA" 1.2v battery (volt meter flashed only) and the battery started to heat up straight away...
SO UNDER THESE CIRCUMSTANCES IT WOULD HAVE EXPLODED OR CAUGHT ON FIRE VERY QUICKLY

So given the (unintentional misleading info in my 1st post) I can understand your concerns for my safety, as you weren't to know that I used a PRB 1.2v battery

STILL NOT A GOOD IDEA TO MIX BATTERY VOLTAGES ANYHOW but this how we all learn things to teach the next generation isn't it ?

cheers & thanx Rebel54

 

[yo vapo]

just use the other 14500 battery But put it in upside down. Works fine and doubles the mah

Huh? Excuse me?? Reverse the polarity on a perfectly good but discharged battery? Doesn't sound good.

I think you're thinking you can change it from a series to a parallel arrangement doing that, but it doesn't work that way.

 

[phoneguy1212]

Huh? Excuse me?? Reverse the polarity on a perfectly good but discharged battery? Doesn't sound good.

I think you're thinking you can change it from a series to a parallel arrangement doing that, but it doesn't work that way.

Please explain why this wouldn't work

 

[ChrispyCritter]

Please explain why this wouldn't work

You would end up with the same polarity going into the positive and negative terminals..it would be kind of like taking 2 car batteries and hooking the 2 - together between the 2 batteries and hooking one + to the + terminal on the car then the other + to the - terminal or vise-versa. In parallel you would hook both batteries - to - and + to + then hook them to the matching terminals on the car doubling the amps but keeping the voltage the same.

 

[yo vapo]

No, it wouldn't be like that at all.
You would have to rewire your battery box to make it a parallel connection.
Think about a series battery box. You have a negative wire a positive wire coming out of it.
To the negative the negative end of the first batt is placed. The positive end of the first batt connects to the negative of the second batt, and the positive terminal of the second batt goes out to the positive lead. This is a series battery arrangement. What you are talking about doing is rewiring the battery box so that both negs are together and both positives are together, but a series battery box is not wired that way. You can't simply flip a battery over to make it so. What you'll have is the batteries working against each other.

 

[Rebel54]

Ok lets see - It's sunday down here in AUS and I have had a bludge of a day testing the battery mod on my 5v box mod

Results so far :-
I have been using the Ebay 2600mah PRB (protected rechargeable battery) & a 3.7v PRB all day untill both batteries went flat without a hint of any heating up issue in the 2600mah PRB. I tried it with the volt meter attached to it as well during the day and each time it give me a clean volt reading.

I'm not trying to be a smart ... or anything pls don't get me wrong, but the curiosity factor got the better of me and I had to find out if it caused any problems at all...

I tried it in both battery configurations
5volt = (2) 3.7v PRB (bought from "madvapes" for the box mod) - original config.
4volt = (1) 3.7v PRB & (1) 1.2v 2600mah PRB (bought from Ebay - link below)
eBay Australia: Buy new & used fashion, electronics & home d

I have a 3.5ml Tank (madvapes) that only runs good on 5v (used to test 5v mode) http://www.madvapes.com/assets/images/3368-3.jpg

I also use clearomizers from Gotvapes http://www.gotvapes.com/images/whitedeluxece2_01.png

The clearomizers give a burning taste when used on 5v - but when used in 4v mode it is clean and tasty, plenty of vapor, I used these to test the 4v mode most of the day (emptied 1 clearomizer) (think I have nic overdose)

My only conclusion is that the 1.2v PRB (Protected Rechargeable Battery) 2600mah is safe to use this way with the 3.7v 1200mah PRB to give a 4volt vape from a "5v regulated box mod" - I will continue to test it over the coming week and at the end of the week I will get back in here and give the results of the test...

NOTE: DO NOT USE STANDARD 1.2V (NON RECHARGEABLE BATTERY) if you decide to try this (when not in use make sure you turn off the power button on the box mod) that's what I always do at night when sleeping anyhow...

cheers Rebel54 - Keep On vaping

 

[ChrispyCritter]

No, it wouldn't be like that at all.
You would have to rewire your battery box to make it a parallel connection.
Think about a series battery box. You have a negative wire a positive wire coming out of it.
To the negative the negative end of the first batt is placed. The positive end of the first batt connects to the negative of the second batt, and the positive terminal of the second batt goes out to the positive lead. This is a series battery arrangement. What you are talking about doing is rewiring the battery box so that both negs are together and both positives are together, but a series battery box is not wired that way. You can't simply flip a battery over to make it so. What you'll have is the batteries working against each other.

That's basically what I was trying to say with my post..below are the 2 basic ways you can wire batteries..you can wire in series and parallel also with more than 2 batteries but I thought I would just show the basic diagrams so it doesn't get too confusing. Note wiring 2-6 volt batteries in series doubles the voltage to 12 while the amps stay the same as one 6 volt..in parallel wiring 2-12 volt batteries the volts remain the same but you double the amps.

Series

Parallel

 

[yo vapo]

Evidently I didn't read your post closely enough, Crisp. My bad. I think I was floored by the other poster's suggestion to flip one of the batts over, rendering my mind too blown to absorb anything else at that moment.

Yep, my point was that simply flipping one of the batteries over does not turn a series connection into a parallel one. In your example you have rewired your battery box; that works of course.