5V box mod cuts off when using certain carts with different batteries??

[mattoci667]

I have a 5V mod from Mad Vapes that works AMAZINGLY well until I use a different battery. The thing I don't understand, though, is that both brands of batteries are Trustfires. I have a set of blue Trustfires that I ordered online somewhere, I can't remember the site, and they work great with anything...2.0 ohm tank carts, 1.7ohm XXL carts, regular 510 carts, etc. But then I have a set of Trustfires that say all the same things as far as the type of battery and etc but they're black and orange instead of blue and will only work with regular cartomizers. They won't work with any type of cartomizers other than the original short carts that have been around FOREVER, and the 2.0ohm tank carts. They won't even try to work with the smok Tech 1.7ohm mega XXL cart, they just cut off immediately, but the other batteries work with everything and I have no issues? Is there any reason for this? I could understand if it was maybe a different brand but they're both Trustfires and have the exact same info on the side. Any help would be greatly appreciated! Thanks!

 

[twohandedcreations]

Trustfire flames, Ultrafire blues and greys are all pretty inconsistant when it comes to the protection circuits....! Its the protection circuit it the batteries that shutting down the current. If the carto is pulling too much power from the batteries it will trip the protection circuit in the batt's. & the lower the resistance of the carto the more power it pulls from the batteries and faster also.... I have a bunch of all these batteries and it seems to happen diffrently for all of them, even when the brand is the same!! You need to buy IMR LI-MN High-drain batteries if you want this problem to go away forever!!!

 

[mattoci667]

Trustfire flames, Ultrafire blues and greys are all pretty inconsistant when it comes to the protection circuits....! Its the protection circuit it the batteries that shutting down the current. If the carto is pulling too much power from the batteries it will trip the protection circuit in the batt's. & the lower the resistance of the carto the more power it pulls from the batteries and faster also.... I have a bunch of all these batteries and it seems to happen diffrently for all of them, even when the brand is the same!! You need to buy IMR LI-MN High-drain batteries if you want this problem to go away forever!!!

Thanks so much! I haven't been able to find an answer anywhere about this, so I appreciate your reply more than you know!!! I searched for the battery you are talking about and found it, I will be placing and order soon. Thanks again

 

[AriM]

As twohanded said, it's most probably a limitation within the specific PCB, and not so much the cell. The most common result of a cell that can't cope with a specific load, is that the voltage will "sag". This is also possible with an IMR battery, but it will continue to "work" because there is no protection circuitry to cut the flow of current.

The best solution here is to use higher quality batteries. Certain brands seem to be less consistent than others, even though most brands employ the same raw cell in their battery casing. In the case of your batteries, it's almost surely the PCB going into over-current lockout.

P.S. be VERY careful when ordering unprotected "IMR" batteries. There are many out there claiming to be true Li-Mn chemistry, when in fact they are nothing more than discard (binned) Li-ION (Li-Co) cells with no protection PCB (or even worse Li-Poly). They can be EXTREMELY dangerous. If you are in doubt about the battery you are going to purchase, do a little asking around....and be sure to get a reputable brand, from a reputable vendor.