Unregulated box mod question

[krobeson]

So I picked up a very nice unregulated box mod from a local B&M today and so far I am very pleased it!! After an evening of good vaping I popped the batteries out for a night on the charger.....well, one was still fully charged and the other was at 3.55V. Is there something wrong with the wiring on this box or is this how they usually act?

Doesn't seem right....

 

[Ryedan]

So I picked up a very nice unregulated box mod from a local B&M today and so far I am very pleased it!! After an evening of good vaping I popped the batteries out for a night on the charger.....well, one was still fully charged and the other was at 3.55V. Is there something wrong with the wiring on this box or is this how they usually act?

Doesn't seem right....

No, it's not normal. It means it's only using one of the batteries.

Here's a copy of your picture with a couple of additions to it:

The positive battery contacts should be wired together and the same for the negative contacts as per the arrows. Are they?

It's a mechanical mod, so I'm thinking what is in the white circle is a fuse, but I'm in no way sure and I'm confused by what I think is a resistor. If you could get a reasonably clear and sharp close up of that area it would probably really help.

Also, IMO that switch is not up to any high power current flow.

 

[danca90]

This is an issue you should politely bring up to the B&M. Also, assuming that you got matched batteries, brand new for the box.

 

[Dougiestyle]

That is a hack job if I ever saw one. Way too much box for function. Way too much unused real estate. Your batteries aren't connected in parallel. Some sort of circuit (mosfet?) is present. I'm kinda ...... that someone sold that to you. That's novice build, at best.

 

[danca90]

I will say, a friend of mine got a Mad Modder box. Thing is crazy. I'm kind of in love with it.

 

[Zanderist]

No, it's not normal. It means it's only using one of the batteries.

Here's a copy of your picture with a couple of additions to it:

The positive battery contacts should be wired together and the same for the negative contacts as per the arrows. Are they?

It's a mechanical mod, so I'm thinking what is in the white circle is a fuse, but I'm in no way sure and I'm confused by what I think is a resistor. If you could get a reasonably clear and sharp close up of that area it would probably really help.

Also, IMO that switch is not up to any high power current flow.

That white circle could be mosfet set up like the diagram in this thread:
http://www.e-cigarette-forum.com/forum/modding-forum/618779-unregulated-box-mod-build.html

 

[chopdoc]

It looks like a 1590B box which is larger than the 1590G box and the circled area is the mosfet. The resistor is so it shuts off when the switch is released. If it didnt have a resistor the mosfet would keep firing after releasing the switch but with the mosfet it doesnt put mega power thru the switch making it much safer I would check the solder connections on the battery sled. Sounds like it is using only one battery but it looks good to me. Clean build. If you want to know more about boxes like that join the FB group Box Modders but be warned, they are a wild group that keeps me laughing all the time but they also know what they are doing with builds like this.

 

[Ren76]

That definitely looks like a mosfet, box looks like a homemade job to me, not that there's anything wrong with that, if it works properly. I'd be going back to the shop and telling them what you told us.

 

[tj99959]

First thing I'm going to say is co-doos for checking those batteries when you took them out of the mod!

There is something wrong, and only a VOM can say what it is. So not having a meter in one hand & your mod in the other, I'm not even going to venture a guess.

 

[ddkl7780]

May I ask how much it was?

 

[krobeson]

Thanks for the responses guys. To me it also looks like a fairly clean build. I paid $110 for it. I am running the box again on 2 freshly charged VTC4s. They are matched and labeled. I will also be contacting the guy who made them to ask him about this issue.

 

[krobeson]

No, it's not normal. It means it's only using one of the batteries.

Here's a copy of your picture with a couple of additions to it:

The positive battery contacts should be wired together and the same for the negative contacts as per the arrows. Are they?

It's a mechanical mod, so I'm thinking what is in the white circle is a fuse, but I'm in no way sure and I'm confused by what I think is a resistor. If you could get a reasonably clear and sharp close up of that area it would probably really help.

Also, IMO that switch is not up to any high power current flow.

They are wired together on both the positive and negative sides. He just soldered the wire over both connections on the negative and positive.

What would make it discharge from just one battery if both batteries are sharing that same connections?? Possibly one of the batteries isn't making good contact? I put one battery in each slot on the sled and the mod fired with no issues.

 

[rhelton]

Can you post pics detailing the ends of the sled. Cant tell what is going on there for sure without it. need to see if its in series or parallel. And it is "home made" box, its suppose to look that way and it appears like it was built properly, it is very tidy inside they built it well but need some more pics . Also need the battery information what are they do they match and what was the voltage on both you only list 1.

 

[Ryedan]

That white circle could be mosfet set up like the diagram in this thread:
http://www.e-cigarette-forum.com/forum/modding-forum/618779-unregulated-box-mod-build.html

You got it, thanks Zanderist. I'm used to looking at regulated mods so it didn't come to mind. That also takes care of the switch amp rating.

 

[Ryedan]

They are wired together on both the positive and negative sides. He just soldered the wire over both connections on the negative and positive.

What would make it discharge from just one battery if both batteries are sharing that same connections?? Possibly one of the batteries isn't making good contact? I put one battery in each slot on the sled and the mod fired with no issues.

In that case my feeling is you're right and it's a battery not making contact inside the battery sled. I would put one battery in it and take a voltage reading across the sled contact surfaces for the other battery position. If you get no voltage the battery that's in place is not making both contacts.

 

[krobeson]

Well, I fiddled with it last night and found the left slot making an intermittent connection. I pulled the positive clip out a bit and so it seems to be working. I'll keep you all updated.