Single 18650 Bottom Feeder

[mvroman]

This just arrived in my mailbox! It's a dual 18650 Power bank, and just holding it feels like it's going to be an awesome project. A 10ml bottle fits almost perfectly, and after doing a little testing on what's what on the board inside, I will know for sure if my plans will work.

I want to retain the power bank functions as far as on board charging, as well use the original switch in my design, and I also want to see if I can set it up as a pass through device as well. I am going to be driving across country in a few weeks so that is why I am doing this, plus I have always wanted a bottom feeder but don't want to pay the price if I can make a decent one myself.

I'm still waiting on a few things but once I get home from school tonight I will pull this beauty apart and see what's what and post some more pics!

Sent from my SAMSUNG-SGH-I337 using Tapatalk

 

[vapero]

keep posting the progress! would love to see it

 

[mvroman]

Decided to take it apart real quick, and since I'm not using a chip in this I might be able to make the regular board work. The OUT side is where my 510 Connection will go, I may try to make a new cap for the box if this one doesn't work right.

In my mind, since I'm in my car now, I'm thinking run the + and - from the USB port portion of the board, but I'm positive it would be a continuous fire. Maybe run the + or - directly from the switch?

Sent from my SAMSUNG-SGH-I337 using Tapatalk

 

[mvroman]

Here is the board

Just a quick mock-up. It's a tight fit with the cover in place so I may step down to a 6 ml bottle instead of 10ml.

Also, after looking over the board it's going to be too much of a hassle to use it, since I don't have the ability to desolder the USB port without heating the rest of the board too much. I am now looking into micro - USB charging circuits but am wondering what the best amperage rate would be to use it as a passthrough. I found some a 1A that I think would work, since this isn't going to be a sub-ohm type deal. Planning on using regular atomizers and cartomizers between 1.8-2.5ohms. Any ideas?

Sent from my SAMSUNG-SGH-I337 using Tapatalk

 

[asdaq]

For that range of resistance a 2A or better 3A source is advised. For just charging one amp is enough, and if the battery is in line in the pass through then you have the current you need supplied by the battery.

I would not try to use the board you have there as it is too big to allow other components, but if you lose the cap on that bottle you will get more room in there. Just some ideas.

Sent from my Nexus 4 using Tapatalk

 

[mvroman]

For that range of resistance a 2A or better 3A source is advised. For just charging one amp is enough, and if the battery is in line in the pass through then you have the current you need supplied by the battery.

I would not try to use the board you have there as it is too big to allow other components, but if you lose the cap on that bottle you will get more room in there. Just some ideas.

Sent from my Nexus 4 using Tapatalk

Yea I just put the bottle in there as a test fit with the battery to see if I would need to mod the case at all, that cap wont be on and I will be running a blunt tip needle cap. I wanted to use the board to retain its own charging functions but like you said, its too big. I ordered one of the Micro USB charging boards which should be here in a couple weeks, as well as all the other parts that I will need like the horn switch and whatnot. Until those parts come in I wont be able to do much, but I DID find something interesting while looking for the micro USB charging board. Check this out!

Wireless Power Supply Modules Pair w/19mm Dia. Coil | Electrodragon

 

[mvroman]

Connectors and Carts came in the vape mail today along with my new soldering iron! Will post some pics tonight and/or tomorrow.

Sent from my SAMSUNG-SGH-I337 using Tapatalk

 

[mvroman]

Pretty much done, just have to adjust the 510 connector to be more centered over the port where the needle will be, then I have to secure everything. Initial tests show that all connections are good and it fires!

Sent from my SAMSUNG-SGH-I337 using Tapatalk